Artesian Resources Corp NASDAQ:ARTNA Historical Prices

Below are the 6865 trading days of historical prices for ARTNA.

#	Exchange	Symbol	Date	Open	High	Low	Close
6865	NASDAQ	ARTNA	Tue, Mar 5, 2024	35.53	36.93	35.12	36.05
6864	NASDAQ	ARTNA	Mon, Mar 4, 2024	34.63	35.62	34.37	35.50
6863	NASDAQ	ARTNA	Fri, Mar 1, 2024	34.03	34.79	34.00	34.53
6862	NASDAQ	ARTNA	Thu, Feb 29, 2024	34.92	35.14	34.32	34.47
6861	NASDAQ	ARTNA	Wed, Feb 28, 2024	34.32	35.05	34.32	34.43
6860	NASDAQ	ARTNA	Tue, Feb 27, 2024	34.42	35.03	34.12	34.33
6859	NASDAQ	ARTNA	Mon, Feb 26, 2024	34.49	34.65	33.84	34.30
6858	NASDAQ	ARTNA	Fri, Feb 23, 2024	34.93	35.43	34.32	34.73
6857	NASDAQ	ARTNA	Thu, Feb 22, 2024	35.50	35.50	34.47	34.81
6856	NASDAQ	ARTNA	Wed, Feb 21, 2024	35.52	36.15	35.52	35.69
6855	NASDAQ	ARTNA	Tue, Feb 20, 2024	35.43	36.35	35.43	35.66
6854	NASDAQ	ARTNA	Fri, Feb 16, 2024	36.65	36.65	35.73	35.78
6853	NASDAQ	ARTNA	Thu, Feb 15, 2024	35.63	36.83	35.63	36.83
6852	NASDAQ	ARTNA	Wed, Feb 14, 2024	36.21	36.21	34.94	35.42
6851	NASDAQ	ARTNA	Tue, Feb 13, 2024	36.53	36.58	35.00	35.18
6850	NASDAQ	ARTNA	Mon, Feb 12, 2024	36.25	37.50	36.25	37.23
6849	NASDAQ	ARTNA	Fri, Feb 9, 2024	35.57	36.68	35.57	36.44
6848	NASDAQ	ARTNA	Thu, Feb 8, 2024	35.25	35.71	35.00	35.64
6847	NASDAQ	ARTNA	Wed, Feb 7, 2024	36.39	36.39	35.48	35.54
6846	NASDAQ	ARTNA	Tue, Feb 6, 2024	35.50	36.33	35.50	36.15
6845	NASDAQ	ARTNA	Mon, Feb 5, 2024	35.69	36.04	35.25	35.57
6844	NASDAQ	ARTNA	Fri, Feb 2, 2024	36.49	36.63	35.79	36.10
6843	NASDAQ	ARTNA	Thu, Feb 1, 2024	36.60	37.30	36.60	36.98
6842	NASDAQ	ARTNA	Wed, Jan 31, 2024	37.07	37.30	36.50	36.50
6841	NASDAQ	ARTNA	Tue, Jan 30, 2024	37.14	37.35	36.65	36.70
6840	NASDAQ	ARTNA	Mon, Jan 29, 2024	36.75	37.51	36.62	37.34
6839	NASDAQ	ARTNA	Fri, Jan 26, 2024	37.54	37.59	36.46	36.75
6838	NASDAQ	ARTNA	Thu, Jan 25, 2024	37.17	37.28	36.88	37.26
6837	NASDAQ	ARTNA	Wed, Jan 24, 2024	38.29	38.45	36.89	36.92
6836	NASDAQ	ARTNA	Tue, Jan 23, 2024	37.81	38.39	37.72	38.20
6835	NASDAQ	ARTNA	Mon, Jan 22, 2024	37.29	37.91	37.29	37.81
6834	NASDAQ	ARTNA	Fri, Jan 19, 2024	37.53	37.53	36.81	37.14
6833	NASDAQ	ARTNA	Thu, Jan 18, 2024	36.72	37.17	35.81	37.12
6832	NASDAQ	ARTNA	Wed, Jan 17, 2024	36.78	37.04	36.29	36.85
6831	NASDAQ	ARTNA	Tue, Jan 16, 2024	37.98	38.02	36.61	36.78
6830	NASDAQ	ARTNA	Fri, Jan 12, 2024	38.25	38.49	37.67	38.02
6829	NASDAQ	ARTNA	Thu, Jan 11, 2024	38.28	38.71	37.59	37.86
6828	NASDAQ	ARTNA	Wed, Jan 10, 2024	38.01	38.87	37.99	38.60
6827	NASDAQ	ARTNA	Tue, Jan 9, 2024	38.52	38.67	37.86	37.95
6826	NASDAQ	ARTNA	Mon, Jan 8, 2024	38.28	39.13	38.02	38.81
6825	NASDAQ	ARTNA	Fri, Jan 5, 2024	38.93	38.93	38.04	38.28
6824	NASDAQ	ARTNA	Thu, Jan 4, 2024	40.07	40.07	38.81	38.99
6823	NASDAQ	ARTNA	Wed, Jan 3, 2024	40.86	41.00	39.37	39.80
6822	NASDAQ	ARTNA	Tue, Jan 2, 2024	41.24	41.73	40.77	40.79
6821	NASDAQ	ARTNA	Fri, Dec 29, 2023	42.40	42.70	41.24	41.45
6820	NASDAQ	ARTNA	Thu, Dec 28, 2023	42.40	42.87	42.36	42.74
6819	NASDAQ	ARTNA	Wed, Dec 27, 2023	42.76	43.27	42.29	42.64
6818	NASDAQ	ARTNA	Tue, Dec 26, 2023	42.86	43.16	42.35	42.88
6817	NASDAQ	ARTNA	Fri, Dec 22, 2023	42.58	43.36	42.54	42.69
6816	NASDAQ	ARTNA	Thu, Dec 21, 2023	42.80	42.80	41.84	42.58
6815	NASDAQ	ARTNA	Wed, Dec 20, 2023	42.27	43.44	42.00	42.21
6814	NASDAQ	ARTNA	Tue, Dec 19, 2023	42.00	42.74	41.60	42.59
6813	NASDAQ	ARTNA	Mon, Dec 18, 2023	42.00	42.00	41.21	41.79
6812	NASDAQ	ARTNA	Fri, Dec 15, 2023	43.87	43.87	41.55	41.80
6811	NASDAQ	ARTNA	Thu, Dec 14, 2023	44.20	44.59	42.81	43.53
6810	NASDAQ	ARTNA	Wed, Dec 13, 2023	42.25	44.20	42.25	44.17
6809	NASDAQ	ARTNA	Tue, Dec 12, 2023	42.65	43.02	42.21	42.73
6808	NASDAQ	ARTNA	Mon, Dec 11, 2023	43.51	43.51	42.16	42.61
6807	NASDAQ	ARTNA	Fri, Dec 8, 2023	44.38	44.64	43.47	43.78
6806	NASDAQ	ARTNA	Thu, Dec 7, 2023	44.41	44.70	44.10	44.31
6805	NASDAQ	ARTNA	Wed, Dec 6, 2023	43.75	44.78	43.75	44.18
6804	NASDAQ	ARTNA	Tue, Dec 5, 2023	43.30	43.91	43.19	43.44
6803	NASDAQ	ARTNA	Mon, Dec 4, 2023	42.88	43.85	42.84	43.58
6802	NASDAQ	ARTNA	Fri, Dec 1, 2023	42.00	43.03	41.34	42.75
6801	NASDAQ	ARTNA	Thu, Nov 30, 2023	41.62	42.05	41.35	42.05
6800	NASDAQ	ARTNA	Wed, Nov 29, 2023	41.71	41.82	41.19	41.34
6799	NASDAQ	ARTNA	Tue, Nov 28, 2023	42.56	42.75	41.32	41.32
6798	NASDAQ	ARTNA	Mon, Nov 27, 2023	43.01	43.25	42.72	42.73
6797	NASDAQ	ARTNA	Fri, Nov 24, 2023	42.73	43.40	42.29	43.37
6796	NASDAQ	ARTNA	Wed, Nov 22, 2023	42.67	42.86	42.32	42.59
6795	NASDAQ	ARTNA	Tue, Nov 21, 2023	41.91	42.40	41.42	42.31
6794	NASDAQ	ARTNA	Mon, Nov 20, 2023	42.60	42.60	41.53	41.77
6793	NASDAQ	ARTNA	Fri, Nov 17, 2023	43.15	43.15	41.99	42.25
6792	NASDAQ	ARTNA	Thu, Nov 16, 2023	43.00	43.11	42.49	42.59
6791	NASDAQ	ARTNA	Wed, Nov 15, 2023	42.83	43.12	42.45	42.79
6790	NASDAQ	ARTNA	Tue, Nov 14, 2023	41.37	43.22	40.70	43.22
6789	NASDAQ	ARTNA	Mon, Nov 13, 2023	40.41	40.94	40.41	40.68
6788	NASDAQ	ARTNA	Fri, Nov 10, 2023	41.38	41.38	40.60	40.69
6787	NASDAQ	ARTNA	Thu, Nov 9, 2023	41.15	41.15	40.42	40.89
6786	NASDAQ	ARTNA	Wed, Nov 8, 2023	42.08	42.23	40.78	41.32
6785	NASDAQ	ARTNA	Tue, Nov 7, 2023	41.58	41.93	40.45	41.87
6784	NASDAQ	ARTNA	Mon, Nov 6, 2023	40.43	42.23	40.43	42.22
6783	NASDAQ	ARTNA	Fri, Nov 3, 2023	41.26	42.57	41.02	42.13
6782	NASDAQ	ARTNA	Thu, Nov 2, 2023	39.92	40.75	39.92	40.62
6781	NASDAQ	ARTNA	Wed, Nov 1, 2023	39.37	39.62	38.95	39.33
6780	NASDAQ	ARTNA	Tue, Oct 31, 2023	39.26	39.99	39.10	39.30
6779	NASDAQ	ARTNA	Mon, Oct 30, 2023	39.85	40.42	39.24	39.46
6778	NASDAQ	ARTNA	Fri, Oct 27, 2023	40.26	40.84	39.37	39.75
6777	NASDAQ	ARTNA	Thu, Oct 26, 2023	39.54	40.75	39.54	40.52
6776	NASDAQ	ARTNA	Wed, Oct 25, 2023	39.39	39.55	38.76	39.34
6775	NASDAQ	ARTNA	Tue, Oct 24, 2023	39.63	39.73	39.20	39.34
6774	NASDAQ	ARTNA	Mon, Oct 23, 2023	39.89	40.19	38.97	39.27
6773	NASDAQ	ARTNA	Fri, Oct 20, 2023	40.17	40.41	39.72	39.78
6772	NASDAQ	ARTNA	Thu, Oct 19, 2023	40.13	40.65	39.71	39.98
6771	NASDAQ	ARTNA	Wed, Oct 18, 2023	41.18	41.18	39.63	40.13
6770	NASDAQ	ARTNA	Tue, Oct 17, 2023	41.07	41.73	41.01	41.03
6769	NASDAQ	ARTNA	Mon, Oct 16, 2023	41.28	41.59	40.79	41.32
6768	NASDAQ	ARTNA	Fri, Oct 13, 2023	41.22	41.73	40.82	40.86
6767	NASDAQ	ARTNA	Thu, Oct 12, 2023	41.83	42.07	40.99	41.45
6766	NASDAQ	ARTNA	Wed, Oct 11, 2023	42.55	43.41	42.36	42.60
6765	NASDAQ	ARTNA	Tue, Oct 10, 2023	42.44	42.86	42.02	42.66
6764	NASDAQ	ARTNA	Mon, Oct 9, 2023	42.26	42.90	41.86	42.41
6763	NASDAQ	ARTNA	Fri, Oct 6, 2023	41.67	42.45	41.55	42.36
6762	NASDAQ	ARTNA	Thu, Oct 5, 2023	41.18	42.25	40.87	42.02
6761	NASDAQ	ARTNA	Wed, Oct 4, 2023	41.19	42.46	40.80	41.37
6760	NASDAQ	ARTNA	Tue, Oct 3, 2023	40.81	41.41	40.38	41.25
6759	NASDAQ	ARTNA	Mon, Oct 2, 2023	41.67	41.67	40.67	41.10
6758	NASDAQ	ARTNA	Fri, Sep 29, 2023	41.87	42.10	41.33	41.99
6757	NASDAQ	ARTNA	Thu, Sep 28, 2023	42.55	43.10	41.26	41.87
6756	NASDAQ	ARTNA	Wed, Sep 27, 2023	42.24	42.90	41.95	42.41
6755	NASDAQ	ARTNA	Tue, Sep 26, 2023	43.65	43.80	42.09	42.14
6754	NASDAQ	ARTNA	Mon, Sep 25, 2023	43.81	43.81	42.86	43.64
6753	NASDAQ	ARTNA	Fri, Sep 22, 2023	44.41	44.43	43.75	43.84
6752	NASDAQ	ARTNA	Thu, Sep 21, 2023	44.88	45.07	44.58	44.58
6751	NASDAQ	ARTNA	Wed, Sep 20, 2023	45.65	46.09	45.23	45.30
6750	NASDAQ	ARTNA	Tue, Sep 19, 2023	46.24	46.39	45.83	45.84
6749	NASDAQ	ARTNA	Mon, Sep 18, 2023	46.75	47.14	46.49	46.50
6748	NASDAQ	ARTNA	Fri, Sep 15, 2023	47.20	47.37	45.88	46.84
6747	NASDAQ	ARTNA	Thu, Sep 14, 2023	47.16	47.44	46.90	46.96
6746	NASDAQ	ARTNA	Wed, Sep 13, 2023	46.49	47.36	46.44	46.96
6745	NASDAQ	ARTNA	Tue, Sep 12, 2023	46.09	46.48	46.09	46.47
6744	NASDAQ	ARTNA	Mon, Sep 11, 2023	46.24	46.24	46.24	46.24
6743	NASDAQ	ARTNA	Fri, Sep 8, 2023	46.39	46.39	45.24	45.83
6742	NASDAQ	ARTNA	Thu, Sep 7, 2023	45.80	46.39	45.19	46.22
6741	NASDAQ	ARTNA	Wed, Sep 6, 2023	45.63	45.95	45.42	45.80
6740	NASDAQ	ARTNA	Tue, Sep 5, 2023	46.15	46.15	45.00	45.78
6739	NASDAQ	ARTNA	Fri, Sep 1, 2023	46.11	46.51	45.91	46.34
6738	NASDAQ	ARTNA	Thu, Aug 31, 2023	46.10	46.40	46.03	46.16
6737	NASDAQ	ARTNA	Wed, Aug 30, 2023	46.15	46.50	45.92	46.16
6736	NASDAQ	ARTNA	Tue, Aug 29, 2023	45.99	46.30	45.38	46.26
6735	NASDAQ	ARTNA	Mon, Aug 28, 2023	46.00	46.24	45.63	46.12
6734	NASDAQ	ARTNA	Fri, Aug 25, 2023	45.79	46.58	45.52	45.97
6733	NASDAQ	ARTNA	Thu, Aug 24, 2023	45.56	45.89	45.33	45.57
6732	NASDAQ	ARTNA	Wed, Aug 23, 2023	46.21	46.25	45.15	45.58
6731	NASDAQ	ARTNA	Tue, Aug 22, 2023	47.69	47.74	45.84	45.89
6730	NASDAQ	ARTNA	Mon, Aug 21, 2023	47.52	47.94	47.00	47.60
6729	NASDAQ	ARTNA	Fri, Aug 18, 2023	47.24	47.89	47.24	47.73
6728	NASDAQ	ARTNA	Thu, Aug 17, 2023	46.85	47.83	46.85	47.40
6727	NASDAQ	ARTNA	Wed, Aug 16, 2023	46.92	47.21	46.89	47.04
6726	NASDAQ	ARTNA	Tue, Aug 15, 2023	46.73	47.15	46.02	46.93
6725	NASDAQ	ARTNA	Mon, Aug 14, 2023	46.50	47.05	46.04	46.98
6724	NASDAQ	ARTNA	Fri, Aug 11, 2023	45.84	46.60	45.84	46.47
6723	NASDAQ	ARTNA	Thu, Aug 10, 2023	45.34	46.07	45.34	45.77
6722	NASDAQ	ARTNA	Wed, Aug 9, 2023	45.56	45.84	44.53	45.33
6721	NASDAQ	ARTNA	Tue, Aug 8, 2023	45.91	46.12	44.37	45.52
6720	NASDAQ	ARTNA	Mon, Aug 7, 2023	45.45	46.15	45.45	45.82
6719	NASDAQ	ARTNA	Fri, Aug 4, 2023	45.26	45.78	44.93	45.30
6718	NASDAQ	ARTNA	Thu, Aug 3, 2023	45.81	45.81	45.01	45.10
6717	NASDAQ	ARTNA	Wed, Aug 2, 2023	45.01	45.98	45.01	45.84
6716	NASDAQ	ARTNA	Tue, Aug 1, 2023	45.75	45.97	45.13	45.27
6715	NASDAQ	ARTNA	Mon, Jul 31, 2023	45.77	46.26	45.27	45.56
6714	NASDAQ	ARTNA	Fri, Jul 28, 2023	46.11	46.53	45.61	45.79
6713	NASDAQ	ARTNA	Thu, Jul 27, 2023	47.60	47.67	45.70	45.93
6712	NASDAQ	ARTNA	Wed, Jul 26, 2023	48.37	49.07	47.14	47.41
6711	NASDAQ	ARTNA	Tue, Jul 25, 2023	48.45	48.45	47.82	48.26
6710	NASDAQ	ARTNA	Mon, Jul 24, 2023	48.75	49.41	48.53	48.55
6709	NASDAQ	ARTNA	Fri, Jul 21, 2023	49.54	49.54	49.02	49.02
6708	NASDAQ	ARTNA	Thu, Jul 20, 2023	48.10	49.73	48.00	49.46
6707	NASDAQ	ARTNA	Wed, Jul 19, 2023	47.81	48.47	47.48	48.06
6706	NASDAQ	ARTNA	Tue, Jul 18, 2023	48.20	48.60	47.39	47.89
6705	NASDAQ	ARTNA	Mon, Jul 17, 2023	48.29	48.64	47.70	47.87
6704	NASDAQ	ARTNA	Fri, Jul 14, 2023	48.67	48.86	48.12	48.20
6703	NASDAQ	ARTNA	Thu, Jul 13, 2023	47.37	48.70	47.03	48.64
6702	NASDAQ	ARTNA	Wed, Jul 12, 2023	46.67	47.54	46.67	47.13
6701	NASDAQ	ARTNA	Tue, Jul 11, 2023	46.19	46.36	45.69	46.31
6700	NASDAQ	ARTNA	Mon, Jul 10, 2023	46.50	46.94	46.12	46.20
6699	NASDAQ	ARTNA	Fri, Jul 7, 2023	46.67	46.75	46.14	46.50
6698	NASDAQ	ARTNA	Thu, Jul 6, 2023	46.55	46.91	46.26	46.67
6697	NASDAQ	ARTNA	Wed, Jul 5, 2023	46.75	47.46	46.65	46.93
6696	NASDAQ	ARTNA	Mon, Jul 3, 2023	46.90	47.39	46.74	46.82
6695	NASDAQ	ARTNA	Fri, Jun 30, 2023	47.48	47.48	46.61	47.22
6694	NASDAQ	ARTNA	Thu, Jun 29, 2023	46.42	47.73	46.37	47.41
6693	NASDAQ	ARTNA	Wed, Jun 28, 2023	47.94	47.94	47.18	47.40
6692	NASDAQ	ARTNA	Tue, Jun 27, 2023	47.86	48.24	47.60	47.93
6691	NASDAQ	ARTNA	Mon, Jun 26, 2023	48.60	49.12	47.62	48.06
6690	NASDAQ	ARTNA	Fri, Jun 23, 2023	48.93	49.52	47.72	47.95
6689	NASDAQ	ARTNA	Thu, Jun 22, 2023	49.42	49.42	48.68	49.00
6688	NASDAQ	ARTNA	Wed, Jun 21, 2023	48.97	49.57	48.49	49.30
6687	NASDAQ	ARTNA	Tue, Jun 20, 2023	49.07	49.72	48.97	49.03
6686	NASDAQ	ARTNA	Fri, Jun 16, 2023	49.24	49.75	49.02	49.32
6685	NASDAQ	ARTNA	Thu, Jun 15, 2023	48.23	48.81	48.21	48.81
6684	NASDAQ	ARTNA	Wed, Jun 14, 2023	48.80	48.80	47.94	48.09
6683	NASDAQ	ARTNA	Tue, Jun 13, 2023	48.33	48.83	48.09	48.50
6682	NASDAQ	ARTNA	Mon, Jun 12, 2023	49.92	50.27	48.26	48.30
6681	NASDAQ	ARTNA	Fri, Jun 9, 2023	49.78	50.27	49.78	49.88
6680	NASDAQ	ARTNA	Thu, Jun 8, 2023	50.29	50.38	49.48	50.28
6679	NASDAQ	ARTNA	Wed, Jun 7, 2023	49.26	50.43	49.22	50.36
6678	NASDAQ	ARTNA	Tue, Jun 6, 2023	48.78	49.40	48.45	49.19
6677	NASDAQ	ARTNA	Mon, Jun 5, 2023	49.84	49.93	48.31	48.68
6676	NASDAQ	ARTNA	Fri, Jun 2, 2023	48.99	50.37	48.95	50.00
6675	NASDAQ	ARTNA	Thu, Jun 1, 2023	49.39	49.67	48.19	48.89
6674	NASDAQ	ARTNA	Wed, May 31, 2023	48.90	49.74	48.58	49.50
6673	NASDAQ	ARTNA	Tue, May 30, 2023	48.91	50.07	48.91	49.05
6672	NASDAQ	ARTNA	Fri, May 26, 2023	47.71	49.08	47.58	48.97
6671	NASDAQ	ARTNA	Thu, May 25, 2023	49.17	49.21	47.53	47.86
6670	NASDAQ	ARTNA	Wed, May 24, 2023	48.84	49.80	48.63	49.23
6669	NASDAQ	ARTNA	Tue, May 23, 2023	49.97	50.22	48.86	48.86
6668	NASDAQ	ARTNA	Mon, May 22, 2023	48.95	49.96	47.81	49.81
6667	NASDAQ	ARTNA	Fri, May 19, 2023	49.23	49.80	48.50	48.50
6666	NASDAQ	ARTNA	Thu, May 18, 2023	55.23	55.35	54.83	55.11
6665	NASDAQ	ARTNA	Wed, May 17, 2023	54.82	55.80	54.60	55.60
6664	NASDAQ	ARTNA	Tue, May 16, 2023	54.57	55.23	53.76	55.05
6663	NASDAQ	ARTNA	Mon, May 15, 2023	55.08	55.98	54.64	55.03
6662	NASDAQ	ARTNA	Fri, May 12, 2023	54.78	55.52	54.62	55.32
6661	NASDAQ	ARTNA	Thu, May 11, 2023	55.39	55.39	54.49	54.79
6660	NASDAQ	ARTNA	Wed, May 10, 2023	54.72	55.85	54.48	55.84
6659	NASDAQ	ARTNA	Tue, May 9, 2023	54.98	55.44	54.37	54.88
6658	NASDAQ	ARTNA	Mon, May 8, 2023	55.40	55.40	54.20	54.98
6657	NASDAQ	ARTNA	Fri, May 5, 2023	55.11	55.72	54.71	55.40
6656	NASDAQ	ARTNA	Thu, May 4, 2023	54.36	55.20	53.65	54.97
6655	NASDAQ	ARTNA	Wed, May 3, 2023	54.65	55.02	53.68	54.52
6654	NASDAQ	ARTNA	Tue, May 2, 2023	55.43	55.43	53.39	54.19
6653	NASDAQ	ARTNA	Mon, May 1, 2023	54.78	55.81	54.78	55.03
6652	NASDAQ	ARTNA	Fri, Apr 28, 2023	56.02	56.02	54.56	54.78
6651	NASDAQ	ARTNA	Thu, Apr 27, 2023	55.65	56.25	55.20	55.90
6650	NASDAQ	ARTNA	Wed, Apr 26, 2023	57.08	57.38	55.14	55.62
6649	NASDAQ	ARTNA	Tue, Apr 25, 2023	56.28	57.69	56.18	57.47
6648	NASDAQ	ARTNA	Mon, Apr 24, 2023	56.59	56.98	55.90	56.28
6647	NASDAQ	ARTNA	Fri, Apr 21, 2023	56.10	56.78	55.78	56.57
6646	NASDAQ	ARTNA	Thu, Apr 20, 2023	55.40	56.37	54.95	56.19
6645	NASDAQ	ARTNA	Wed, Apr 19, 2023	55.20	55.54	54.50	55.35
6644	NASDAQ	ARTNA	Tue, Apr 18, 2023	55.78	55.86	54.30	54.98
6643	NASDAQ	ARTNA	Mon, Apr 17, 2023	55.61	56.00	54.98	55.61
6642	NASDAQ	ARTNA	Fri, Apr 14, 2023	58.06	58.22	55.35	55.95
6641	NASDAQ	ARTNA	Thu, Apr 13, 2023	58.41	58.41	57.39	58.37
6640	NASDAQ	ARTNA	Wed, Apr 12, 2023	57.79	58.40	57.40	58.39
6639	NASDAQ	ARTNA	Tue, Apr 11, 2023	57.97	58.22	57.05	57.95
6638	NASDAQ	ARTNA	Mon, Apr 10, 2023	56.95	58.10	56.80	58.00
6637	NASDAQ	ARTNA	Thu, Apr 6, 2023	56.81	57.41	56.72	57.28
6636	NASDAQ	ARTNA	Wed, Apr 5, 2023	55.59	56.97	55.59	56.93
6635	NASDAQ	ARTNA	Tue, Apr 4, 2023	55.18	55.43	54.86	55.42
6634	NASDAQ	ARTNA	Mon, Apr 3, 2023	55.68	55.74	55.05	55.18
6633	NASDAQ	ARTNA	Fri, Mar 31, 2023	54.32	55.45	54.27	55.36
6632	NASDAQ	ARTNA	Thu, Mar 30, 2023	54.31	54.99	54.00	54.58
6631	NASDAQ	ARTNA	Wed, Mar 29, 2023	53.61	54.60	53.61	54.34
6630	NASDAQ	ARTNA	Tue, Mar 28, 2023	53.50	54.35	53.35	53.82
6629	NASDAQ	ARTNA	Mon, Mar 27, 2023	53.29	53.97	53.29	53.60
6628	NASDAQ	ARTNA	Fri, Mar 24, 2023	51.31	53.69	51.31	53.58
6627	NASDAQ	ARTNA	Thu, Mar 23, 2023	52.00	52.27	51.40	51.52
6626	NASDAQ	ARTNA	Wed, Mar 22, 2023	52.34	52.92	51.30	52.01
6625	NASDAQ	ARTNA	Tue, Mar 21, 2023	53.55	53.55	51.60	52.37
6624	NASDAQ	ARTNA	Mon, Mar 20, 2023	52.73	54.28	52.40	53.41
6623	NASDAQ	ARTNA	Fri, Mar 17, 2023	53.22	53.44	51.69	52.14
6622	NASDAQ	ARTNA	Thu, Mar 16, 2023	52.93	54.03	52.18	53.40
6621	NASDAQ	ARTNA	Wed, Mar 15, 2023	52.16	53.68	52.16	53.49
6620	NASDAQ	ARTNA	Tue, Mar 14, 2023	52.26	53.61	52.26	52.87
6619	NASDAQ	ARTNA	Mon, Mar 13, 2023	52.23	53.61	51.49	51.62
6618	NASDAQ	ARTNA	Fri, Mar 10, 2023	53.79	54.45	51.81	52.23
6617	NASDAQ	ARTNA	Thu, Mar 9, 2023	54.95	55.18	54.08	54.19
6616	NASDAQ	ARTNA	Wed, Mar 8, 2023	55.18	55.40	54.45	55.07
6615	NASDAQ	ARTNA	Tue, Mar 7, 2023	55.36	55.57	54.77	55.13
6614	NASDAQ	ARTNA	Mon, Mar 6, 2023	54.83	55.60	54.25	55.17
6613	NASDAQ	ARTNA	Fri, Mar 3, 2023	55.74	55.79	54.77	55.35
6612	NASDAQ	ARTNA	Thu, Mar 2, 2023	54.36	55.64	54.02	55.39
6611	NASDAQ	ARTNA	Wed, Mar 1, 2023	56.29	57.30	54.15	54.47
6610	NASDAQ	ARTNA	Tue, Feb 28, 2023	56.88	56.88	55.90	56.33
6609	NASDAQ	ARTNA	Mon, Feb 27, 2023	57.46	58.70	56.65	56.93
6608	NASDAQ	ARTNA	Fri, Feb 24, 2023	58.00	58.00	56.73	57.41
6607	NASDAQ	ARTNA	Thu, Feb 23, 2023	59.00	59.50	58.07	58.18
6606	NASDAQ	ARTNA	Wed, Feb 22, 2023	59.00	59.66	58.50	58.80
6605	NASDAQ	ARTNA	Tue, Feb 21, 2023	59.19	59.61	58.41	58.90
6604	NASDAQ	ARTNA	Fri, Feb 17, 2023	58.06	59.58	58.06	59.24
6603	NASDAQ	ARTNA	Thu, Feb 16, 2023	57.93	58.64	57.18	58.00
6602	NASDAQ	ARTNA	Wed, Feb 15, 2023	57.63	58.23	56.68	57.98
6601	NASDAQ	ARTNA	Tue, Feb 14, 2023	58.60	58.62	57.30	57.71
6600	NASDAQ	ARTNA	Mon, Feb 13, 2023	57.64	58.83	57.28	58.28
6599	NASDAQ	ARTNA	Fri, Feb 10, 2023	56.98	58.04	56.67	57.64
6598	NASDAQ	ARTNA	Thu, Feb 9, 2023	58.26	59.24	56.50	56.88
6597	NASDAQ	ARTNA	Wed, Feb 8, 2023	60.14	60.14	57.69	57.80
6596	NASDAQ	ARTNA	Tue, Feb 7, 2023	61.56	61.56	60.01	60.42
6595	NASDAQ	ARTNA	Mon, Feb 6, 2023	61.70	61.98	61.10	61.90
6594	NASDAQ	ARTNA	Fri, Feb 3, 2023	60.77	61.66	59.84	61.59
6593	NASDAQ	ARTNA	Thu, Feb 2, 2023	60.07	61.60	59.80	60.89
6592	NASDAQ	ARTNA	Wed, Feb 1, 2023	59.16	60.55	58.34	60.22
6591	NASDAQ	ARTNA	Tue, Jan 31, 2023	57.58	59.29	56.95	58.90
6590	NASDAQ	ARTNA	Mon, Jan 30, 2023	57.43	58.41	57.08	57.28
6589	NASDAQ	ARTNA	Fri, Jan 27, 2023	61.13	61.13	56.68	57.01
6588	NASDAQ	ARTNA	Thu, Jan 26, 2023	61.86	62.51	61.12	61.30
6587	NASDAQ	ARTNA	Wed, Jan 25, 2023	61.50	63.00	61.19	61.86
6586	NASDAQ	ARTNA	Tue, Jan 24, 2023	60.79	61.97	60.18	61.96
6585	NASDAQ	ARTNA	Mon, Jan 23, 2023	59.68	60.88	58.94	60.75
6584	NASDAQ	ARTNA	Fri, Jan 20, 2023	61.64	61.64	58.89	59.79
6583	NASDAQ	ARTNA	Thu, Jan 19, 2023	59.31	61.95	59.20	61.17
6582	NASDAQ	ARTNA	Wed, Jan 18, 2023	61.35	61.35	59.09	59.57
6581	NASDAQ	ARTNA	Tue, Jan 17, 2023	60.00	61.51	60.00	61.03
6580	NASDAQ	ARTNA	Fri, Jan 13, 2023	59.39	60.44	58.80	60.25
6579	NASDAQ	ARTNA	Thu, Jan 12, 2023	59.12	59.76	57.92	59.37
6578	NASDAQ	ARTNA	Wed, Jan 11, 2023	59.69	59.91	58.65	59.09
6577	NASDAQ	ARTNA	Tue, Jan 10, 2023	59.71	60.09	59.03	59.50
6576	NASDAQ	ARTNA	Mon, Jan 9, 2023	60.29	61.00	59.50	59.61
6575	NASDAQ	ARTNA	Fri, Jan 6, 2023	59.30	60.33	59.30	60.29
6574	NASDAQ	ARTNA	Thu, Jan 5, 2023	59.30	59.35	57.90	58.72
6573	NASDAQ	ARTNA	Wed, Jan 4, 2023	59.44	60.01	59.07	59.35
6572	NASDAQ	ARTNA	Tue, Jan 3, 2023	59.00	59.13	58.10	58.99
6571	NASDAQ	ARTNA	Fri, Dec 30, 2022	58.18	59.98	58.18	58.58
6570	NASDAQ	ARTNA	Thu, Dec 29, 2022	57.85	59.00	57.72	58.53
6569	NASDAQ	ARTNA	Wed, Dec 28, 2022	58.10	58.77	57.60	57.91
6568	NASDAQ	ARTNA	Tue, Dec 27, 2022	56.42	58.30	56.27	58.02
6567	NASDAQ	ARTNA	Fri, Dec 23, 2022	55.36	57.01	55.36	56.46
6566	NASDAQ	ARTNA	Thu, Dec 22, 2022	54.98	55.78	54.10	55.40
6565	NASDAQ	ARTNA	Wed, Dec 21, 2022	54.19	55.88	54.19	55.43
6564	NASDAQ	ARTNA	Tue, Dec 20, 2022	53.85	54.93	53.85	54.52
6563	NASDAQ	ARTNA	Mon, Dec 19, 2022	55.32	55.32	53.33	54.74
6562	NASDAQ	ARTNA	Fri, Dec 16, 2022	52.82	55.80	52.07	55.79
6561	NASDAQ	ARTNA	Thu, Dec 15, 2022	54.85	55.00	52.81	53.13
6560	NASDAQ	ARTNA	Wed, Dec 14, 2022	55.42	55.95	54.44	54.80
6559	NASDAQ	ARTNA	Tue, Dec 13, 2022	55.30	55.91	54.85	55.10
6558	NASDAQ	ARTNA	Mon, Dec 12, 2022	55.45	55.80	54.27	54.56
6557	NASDAQ	ARTNA	Fri, Dec 9, 2022	55.30	56.15	55.25	55.44
6556	NASDAQ	ARTNA	Thu, Dec 8, 2022	55.20	55.64	54.40	55.30
6555	NASDAQ	ARTNA	Wed, Dec 7, 2022	55.10	55.35	54.75	54.93
6554	NASDAQ	ARTNA	Tue, Dec 6, 2022	54.28	55.15	54.12	54.83
6553	NASDAQ	ARTNA	Mon, Dec 5, 2022	53.99	54.53	53.63	54.31
6552	NASDAQ	ARTNA	Fri, Dec 2, 2022	53.95	55.08	53.42	54.52
6551	NASDAQ	ARTNA	Thu, Dec 1, 2022	54.71	54.96	53.91	54.24
6550	NASDAQ	ARTNA	Wed, Nov 30, 2022	52.87	54.63	52.57	54.56
6549	NASDAQ	ARTNA	Tue, Nov 29, 2022	53.85	53.92	52.78	53.10
6548	NASDAQ	ARTNA	Mon, Nov 28, 2022	55.45	55.45	54.04	54.06
6547	NASDAQ	ARTNA	Fri, Nov 25, 2022	56.01	56.49	55.73	55.77
6546	NASDAQ	ARTNA	Wed, Nov 23, 2022	55.88	56.39	55.17	55.82
6545	NASDAQ	ARTNA	Tue, Nov 22, 2022	56.22	56.26	54.81	55.88
6544	NASDAQ	ARTNA	Mon, Nov 21, 2022	55.77	57.22	55.77	56.21
6543	NASDAQ	ARTNA	Fri, Nov 18, 2022	53.85	55.63	52.73	55.62
6542	NASDAQ	ARTNA	Thu, Nov 17, 2022	53.46	53.46	52.47	53.10
6541	NASDAQ	ARTNA	Wed, Nov 16, 2022	52.55	53.63	51.93	53.56
6540	NASDAQ	ARTNA	Tue, Nov 15, 2022	51.67	52.46	51.03	52.30
6539	NASDAQ	ARTNA	Mon, Nov 14, 2022	51.13	51.83	51.06	51.25
6538	NASDAQ	ARTNA	Fri, Nov 11, 2022	53.87	53.87	51.11	51.58
6537	NASDAQ	ARTNA	Thu, Nov 10, 2022	52.36	53.64	51.45	53.43
6536	NASDAQ	ARTNA	Wed, Nov 9, 2022	51.38	52.20	51.00	51.61
6535	NASDAQ	ARTNA	Tue, Nov 8, 2022	51.16	52.20	50.88	51.79
6534	NASDAQ	ARTNA	Mon, Nov 7, 2022	51.85	51.98	50.29	51.38
6533	NASDAQ	ARTNA	Fri, Nov 4, 2022	50.75	52.36	49.81	52.27
6532	NASDAQ	ARTNA	Thu, Nov 3, 2022	50.65	51.28	49.96	50.27
6531	NASDAQ	ARTNA	Wed, Nov 2, 2022	51.05	51.91	50.94	51.17
6530	NASDAQ	ARTNA	Tue, Nov 1, 2022	52.45	52.57	51.41	51.49
6529	NASDAQ	ARTNA	Mon, Oct 31, 2022	53.31	53.31	52.00	52.28
6528	NASDAQ	ARTNA	Fri, Oct 28, 2022	52.49	53.62	52.49	53.55
6527	NASDAQ	ARTNA	Thu, Oct 27, 2022	52.05	53.00	51.97	52.52
6526	NASDAQ	ARTNA	Wed, Oct 26, 2022	52.25	52.94	51.61	51.61
6525	NASDAQ	ARTNA	Tue, Oct 25, 2022	50.94	52.69	50.31	52.06
6524	NASDAQ	ARTNA	Mon, Oct 24, 2022	50.44	51.44	50.20	51.09
6523	NASDAQ	ARTNA	Fri, Oct 21, 2022	48.67	50.86	48.44	50.29
6522	NASDAQ	ARTNA	Thu, Oct 20, 2022	49.64	49.64	47.82	48.24
6521	NASDAQ	ARTNA	Wed, Oct 19, 2022	49.01	49.55	48.64	49.54
6520	NASDAQ	ARTNA	Tue, Oct 18, 2022	49.01	50.06	48.91	49.43
6519	NASDAQ	ARTNA	Mon, Oct 17, 2022	46.99	48.75	46.99	48.66
6518	NASDAQ	ARTNA	Fri, Oct 14, 2022	47.67	47.67	46.76	46.89
6517	NASDAQ	ARTNA	Thu, Oct 13, 2022	45.87	47.22	45.44	47.06
6516	NASDAQ	ARTNA	Wed, Oct 12, 2022	46.64	46.69	45.92	46.14
6515	NASDAQ	ARTNA	Tue, Oct 11, 2022	46.05	46.98	45.73	46.75
6514	NASDAQ	ARTNA	Mon, Oct 10, 2022	46.34	46.84	45.61	46.12
6513	NASDAQ	ARTNA	Fri, Oct 7, 2022	47.85	47.92	45.64	46.59
6512	NASDAQ	ARTNA	Thu, Oct 6, 2022	48.61	48.70	47.64	47.70
6511	NASDAQ	ARTNA	Wed, Oct 5, 2022	49.12	49.12	48.37	48.99
6510	NASDAQ	ARTNA	Tue, Oct 4, 2022	49.75	50.01	48.41	49.34
6509	NASDAQ	ARTNA	Mon, Oct 3, 2022	48.56	49.88	48.17	49.36
6508	NASDAQ	ARTNA	Fri, Sep 30, 2022	48.51	48.89	48.04	48.12
6507	NASDAQ	ARTNA	Thu, Sep 29, 2022	49.83	49.83	47.96	48.44
6506	NASDAQ	ARTNA	Wed, Sep 28, 2022	49.78	50.60	48.95	50.05
6505	NASDAQ	ARTNA	Tue, Sep 27, 2022	50.27	51.24	49.52	49.69
6504	NASDAQ	ARTNA	Mon, Sep 26, 2022	51.01	51.19	49.80	50.48
6503	NASDAQ	ARTNA	Fri, Sep 23, 2022	51.89	52.82	50.84	51.38
6502	NASDAQ	ARTNA	Thu, Sep 22, 2022	52.68	52.82	51.98	52.43
6501	NASDAQ	ARTNA	Wed, Sep 21, 2022	53.41	54.32	52.52	52.61
6500	NASDAQ	ARTNA	Tue, Sep 20, 2022	55.27	55.27	53.02	53.59
6499	NASDAQ	ARTNA	Mon, Sep 19, 2022	55.13	56.04	54.47	55.78
6498	NASDAQ	ARTNA	Fri, Sep 16, 2022	55.61	59.63	55.00	55.23
6497	NASDAQ	ARTNA	Thu, Sep 15, 2022	56.41	56.41	55.27	55.46
6496	NASDAQ	ARTNA	Wed, Sep 14, 2022	55.40	56.53	54.83	56.33
6495	NASDAQ	ARTNA	Tue, Sep 13, 2022	53.69	55.82	53.69	55.18
6494	NASDAQ	ARTNA	Mon, Sep 12, 2022	53.91	54.46	52.89	53.74
6493	NASDAQ	ARTNA	Fri, Sep 9, 2022	53.53	54.34	52.91	53.81
6492	NASDAQ	ARTNA	Thu, Sep 8, 2022	53.95	54.27	53.30	53.48
6491	NASDAQ	ARTNA	Wed, Sep 7, 2022	53.54	54.26	53.15	53.99
6490	NASDAQ	ARTNA	Tue, Sep 6, 2022	54.53	54.85	52.98	53.46
6489	NASDAQ	ARTNA	Fri, Sep 2, 2022	55.18	55.91	54.44	54.56
6488	NASDAQ	ARTNA	Thu, Sep 1, 2022	54.65	55.32	53.36	54.92
6487	NASDAQ	ARTNA	Wed, Aug 31, 2022	54.91	55.47	54.32	54.63
6486	NASDAQ	ARTNA	Tue, Aug 30, 2022	56.04	56.04	54.63	54.90
6485	NASDAQ	ARTNA	Mon, Aug 29, 2022	56.55	56.63	55.36	56.00
6484	NASDAQ	ARTNA	Fri, Aug 26, 2022	57.56	57.58	56.65	56.65
6483	NASDAQ	ARTNA	Thu, Aug 25, 2022	56.88	57.35	55.53	57.26
6482	NASDAQ	ARTNA	Wed, Aug 24, 2022	56.12	57.76	55.50	56.67
6481	NASDAQ	ARTNA	Tue, Aug 23, 2022	58.70	58.77	55.78	56.41
6480	NASDAQ	ARTNA	Mon, Aug 22, 2022	58.53	59.02	58.07	58.49
6479	NASDAQ	ARTNA	Fri, Aug 19, 2022	58.87	60.36	58.47	58.67
6478	NASDAQ	ARTNA	Thu, Aug 18, 2022	57.75	58.96	57.75	58.85
6477	NASDAQ	ARTNA	Wed, Aug 17, 2022	56.82	57.97	56.77	57.54
6476	NASDAQ	ARTNA	Tue, Aug 16, 2022	56.30	57.11	56.00	56.92
6475	NASDAQ	ARTNA	Mon, Aug 15, 2022	55.69	56.40	55.64	56.10
6474	NASDAQ	ARTNA	Fri, Aug 12, 2022	54.34	55.89	53.80	55.69
6473	NASDAQ	ARTNA	Thu, Aug 11, 2022	54.55	54.85	53.78	53.97
6472	NASDAQ	ARTNA	Wed, Aug 10, 2022	53.87	54.44	53.34	54.19
6471	NASDAQ	ARTNA	Tue, Aug 9, 2022	53.85	53.85	52.89	53.51
6470	NASDAQ	ARTNA	Mon, Aug 8, 2022	53.42	54.00	52.75	53.69
6469	NASDAQ	ARTNA	Fri, Aug 5, 2022	53.68	53.76	53.00	53.70
6468	NASDAQ	ARTNA	Thu, Aug 4, 2022	52.34	53.80	52.34	53.66
6467	NASDAQ	ARTNA	Wed, Aug 3, 2022	51.53	52.08	50.64	51.84
6466	NASDAQ	ARTNA	Tue, Aug 2, 2022	51.99	52.48	51.70	51.70
6465	NASDAQ	ARTNA	Mon, Aug 1, 2022	51.55	52.22	50.77	51.87
6464	NASDAQ	ARTNA	Fri, Jul 29, 2022	51.85	52.04	51.29	51.56
6463	NASDAQ	ARTNA	Thu, Jul 28, 2022	51.75	51.95	51.35	51.69
6462	NASDAQ	ARTNA	Wed, Jul 27, 2022	51.83	52.22	51.28	51.73
6461	NASDAQ	ARTNA	Tue, Jul 26, 2022	51.58	51.85	51.57	51.77
6460	NASDAQ	ARTNA	Mon, Jul 25, 2022	50.95	51.61	50.95	51.56
6459	NASDAQ	ARTNA	Fri, Jul 22, 2022	50.25	51.14	50.25	50.93
6458	NASDAQ	ARTNA	Thu, Jul 21, 2022	51.19	51.77	50.03	50.88
6457	NASDAQ	ARTNA	Wed, Jul 20, 2022	51.70	51.95	51.04	51.54
6456	NASDAQ	ARTNA	Tue, Jul 19, 2022	51.08	51.95	50.99	51.60
6455	NASDAQ	ARTNA	Mon, Jul 18, 2022	50.89	51.22	50.35	50.77
6454	NASDAQ	ARTNA	Fri, Jul 15, 2022	50.42	50.77	49.93	50.54
6453	NASDAQ	ARTNA	Thu, Jul 14, 2022	50.42	50.60	48.97	49.88
6452	NASDAQ	ARTNA	Wed, Jul 13, 2022	50.18	51.38	49.72	50.78
6451	NASDAQ	ARTNA	Tue, Jul 12, 2022	50.02	50.69	50.00	50.34
6450	NASDAQ	ARTNA	Mon, Jul 11, 2022	50.39	50.39	49.41	49.70
6449	NASDAQ	ARTNA	Fri, Jul 8, 2022	49.85	50.46	49.29	50.40
6448	NASDAQ	ARTNA	Thu, Jul 7, 2022	50.44	50.57	49.58	49.63
6447	NASDAQ	ARTNA	Wed, Jul 6, 2022	49.95	50.46	48.34	50.44
6446	NASDAQ	ARTNA	Tue, Jul 5, 2022	50.41	50.41	48.82	49.95
6445	NASDAQ	ARTNA	Fri, Jul 1, 2022	49.03	50.61	49.03	50.38
6444	NASDAQ	ARTNA	Thu, Jun 30, 2022	47.81	49.17	47.81	49.17
6443	NASDAQ	ARTNA	Wed, Jun 29, 2022	49.07	49.07	47.57	47.90
6442	NASDAQ	ARTNA	Tue, Jun 28, 2022	48.98	49.23	48.64	48.86
6441	NASDAQ	ARTNA	Mon, Jun 27, 2022	48.03	48.86	47.87	48.68
6440	NASDAQ	ARTNA	Fri, Jun 24, 2022	46.32	48.01	46.32	47.85
6439	NASDAQ	ARTNA	Thu, Jun 23, 2022	45.83	46.40	45.44	46.35
6438	NASDAQ	ARTNA	Wed, Jun 22, 2022	45.34	45.86	45.02	45.61
6437	NASDAQ	ARTNA	Tue, Jun 21, 2022	45.45	46.34	44.97	45.65
6436	NASDAQ	ARTNA	Fri, Jun 17, 2022	45.46	45.90	45.05	45.17
6435	NASDAQ	ARTNA	Thu, Jun 16, 2022	45.19	45.61	44.67	45.12
6434	NASDAQ	ARTNA	Wed, Jun 15, 2022	45.51	47.44	44.90	45.61
6433	NASDAQ	ARTNA	Tue, Jun 14, 2022	45.02	45.46	44.08	45.34
6432	NASDAQ	ARTNA	Mon, Jun 13, 2022	46.48	46.50	44.87	45.03
6431	NASDAQ	ARTNA	Fri, Jun 10, 2022	46.15	47.07	46.11	46.97
6430	NASDAQ	ARTNA	Thu, Jun 9, 2022	46.95	47.84	46.36	46.39
6429	NASDAQ	ARTNA	Wed, Jun 8, 2022	47.45	47.71	46.84	47.09
6428	NASDAQ	ARTNA	Tue, Jun 7, 2022	48.54	48.85	47.09	47.22
6427	NASDAQ	ARTNA	Mon, Jun 6, 2022	48.76	49.14	48.05	48.30
6426	NASDAQ	ARTNA	Fri, Jun 3, 2022	48.12	49.05	48.12	48.60
6425	NASDAQ	ARTNA	Thu, Jun 2, 2022	48.40	49.19	48.40	49.14
6424	NASDAQ	ARTNA	Wed, Jun 1, 2022	49.00	49.12	48.44	48.54
6423	NASDAQ	ARTNA	Tue, May 31, 2022	48.43	49.44	48.28	49.08
6422	NASDAQ	ARTNA	Fri, May 27, 2022	48.95	50.00	48.76	49.08
6421	NASDAQ	ARTNA	Thu, May 26, 2022	49.23	49.46	48.34	48.52
6420	NASDAQ	ARTNA	Wed, May 25, 2022	49.06	50.00	48.58	48.89
6419	NASDAQ	ARTNA	Tue, May 24, 2022	47.69	49.44	47.24	48.73
6418	NASDAQ	ARTNA	Mon, May 23, 2022	47.71	47.92	46.92	47.42
6417	NASDAQ	ARTNA	Fri, May 20, 2022	47.77	47.77	46.72	47.07
6416	NASDAQ	ARTNA	Thu, May 19, 2022	46.70	47.99	45.55	47.66
6415	NASDAQ	ARTNA	Wed, May 18, 2022	45.52	48.54	45.49	46.84
6414	NASDAQ	ARTNA	Tue, May 17, 2022	45.16	45.31	44.66	45.24
6413	NASDAQ	ARTNA	Mon, May 16, 2022	45.06	45.88	44.80	44.95
6412	NASDAQ	ARTNA	Fri, May 13, 2022	45.47	45.66	44.51	45.37
6411	NASDAQ	ARTNA	Thu, May 12, 2022	44.85	45.27	44.78	45.10
6410	NASDAQ	ARTNA	Wed, May 11, 2022	44.75	45.69	44.70	45.00
6409	NASDAQ	ARTNA	Tue, May 10, 2022	46.01	46.25	44.62	44.87
6408	NASDAQ	ARTNA	Mon, May 9, 2022	44.54	46.06	44.54	46.01
6407	NASDAQ	ARTNA	Fri, May 6, 2022	44.97	45.09	44.19	45.00
6406	NASDAQ	ARTNA	Thu, May 5, 2022	46.54	46.54	44.29	45.16
6405	NASDAQ	ARTNA	Wed, May 4, 2022	45.57	46.62	45.43	46.62
6404	NASDAQ	ARTNA	Tue, May 3, 2022	46.37	46.37	45.48	45.58
6403	NASDAQ	ARTNA	Mon, May 2, 2022	46.17	46.48	45.51	45.97
6402	NASDAQ	ARTNA	Fri, Apr 29, 2022	46.80	46.80	46.05	46.50
6401	NASDAQ	ARTNA	Thu, Apr 28, 2022	46.65	47.64	46.50	46.96
6400	NASDAQ	ARTNA	Wed, Apr 27, 2022	46.90	47.06	46.10	46.25
6399	NASDAQ	ARTNA	Tue, Apr 26, 2022	47.05	47.80	46.89	46.95
6398	NASDAQ	ARTNA	Mon, Apr 25, 2022	46.33	47.26	46.05	47.08
6397	NASDAQ	ARTNA	Fri, Apr 22, 2022	47.95	47.99	46.38	46.38
6396	NASDAQ	ARTNA	Thu, Apr 21, 2022	48.02	48.37	47.51	47.68
6395	NASDAQ	ARTNA	Wed, Apr 20, 2022	46.91	48.19	46.91	48.00
6394	NASDAQ	ARTNA	Tue, Apr 19, 2022	46.40	47.10	46.29	46.85
6393	NASDAQ	ARTNA	Mon, Apr 18, 2022	46.05	46.55	46.01	46.11
6392	NASDAQ	ARTNA	Thu, Apr 14, 2022	47.04	47.39	46.32	46.35
6391	NASDAQ	ARTNA	Wed, Apr 13, 2022	47.82	47.82	46.48	46.82
6390	NASDAQ	ARTNA	Tue, Apr 12, 2022	47.62	47.72	46.88	47.42
6389	NASDAQ	ARTNA	Mon, Apr 11, 2022	47.98	47.98	47.00	47.34
6388	NASDAQ	ARTNA	Fri, Apr 8, 2022	48.70	48.92	47.75	47.78
6387	NASDAQ	ARTNA	Thu, Apr 7, 2022	48.13	49.06	48.07	48.64
6386	NASDAQ	ARTNA	Wed, Apr 6, 2022	48.44	48.56	47.87	48.33
6385	NASDAQ	ARTNA	Tue, Apr 5, 2022	48.66	48.89	48.02	48.15
6384	NASDAQ	ARTNA	Mon, Apr 4, 2022	49.63	49.89	48.45	48.46
6383	NASDAQ	ARTNA	Fri, Apr 1, 2022	48.55	49.43	48.15	49.27
6382	NASDAQ	ARTNA	Thu, Mar 31, 2022	48.15	48.72	48.15	48.55
6381	NASDAQ	ARTNA	Wed, Mar 30, 2022	48.39	48.60	48.08	48.15
6380	NASDAQ	ARTNA	Tue, Mar 29, 2022	47.88	48.50	47.62	48.19
6379	NASDAQ	ARTNA	Mon, Mar 28, 2022	47.03	47.87	46.82	47.50
6378	NASDAQ	ARTNA	Fri, Mar 25, 2022	46.39	47.71	46.39	47.04
6377	NASDAQ	ARTNA	Thu, Mar 24, 2022	47.23	47.30	46.63	47.03
6376	NASDAQ	ARTNA	Wed, Mar 23, 2022	47.78	47.78	46.65	46.77
6375	NASDAQ	ARTNA	Tue, Mar 22, 2022	47.95	48.42	47.45	47.45
6374	NASDAQ	ARTNA	Mon, Mar 21, 2022	48.08	48.67	47.40	48.30
6373	NASDAQ	ARTNA	Fri, Mar 18, 2022	46.11	48.30	46.11	48.08
6372	NASDAQ	ARTNA	Thu, Mar 17, 2022	47.00	47.67	46.50	47.06
6371	NASDAQ	ARTNA	Wed, Mar 16, 2022	47.18	47.62	46.23	46.77
6370	NASDAQ	ARTNA	Tue, Mar 15, 2022	47.46	48.06	46.81	47.10
6369	NASDAQ	ARTNA	Mon, Mar 14, 2022	48.43	48.47	47.30	47.54
6368	NASDAQ	ARTNA	Fri, Mar 11, 2022	47.83	48.58	47.52	48.21
6367	NASDAQ	ARTNA	Thu, Mar 10, 2022	48.44	48.51	46.94	47.82
6366	NASDAQ	ARTNA	Wed, Mar 9, 2022	50.05	50.05	48.13	48.44
6365	NASDAQ	ARTNA	Tue, Mar 8, 2022	50.20	50.88	49.44	49.45
6364	NASDAQ	ARTNA	Mon, Mar 7, 2022	49.70	50.56	49.70	50.24
6363	NASDAQ	ARTNA	Fri, Mar 4, 2022	48.80	49.55	47.91	49.47
6362	NASDAQ	ARTNA	Thu, Mar 3, 2022	48.61	49.27	48.50	49.12
6361	NASDAQ	ARTNA	Wed, Mar 2, 2022	46.82	48.70	46.82	48.12
6360	NASDAQ	ARTNA	Tue, Mar 1, 2022	46.21	46.79	45.98	46.46
6359	NASDAQ	ARTNA	Mon, Feb 28, 2022	46.42	47.24	45.06	46.48
6358	NASDAQ	ARTNA	Fri, Feb 25, 2022	46.99	47.01	46.29	46.81
6357	NASDAQ	ARTNA	Thu, Feb 24, 2022	45.94	47.15	45.57	46.80
6356	NASDAQ	ARTNA	Wed, Feb 23, 2022	47.13	48.08	45.11	46.69
6355	NASDAQ	ARTNA	Tue, Feb 22, 2022	46.17	47.09	46.17	47.06
6354	NASDAQ	ARTNA	Fri, Feb 18, 2022	46.33	46.95	46.12	46.45
6353	NASDAQ	ARTNA	Thu, Feb 17, 2022	46.03	47.19	45.06	46.19
6352	NASDAQ	ARTNA	Wed, Feb 16, 2022	46.11	46.58	45.54	46.46
6351	NASDAQ	ARTNA	Tue, Feb 15, 2022	46.24	46.66	45.79	45.90
6350	NASDAQ	ARTNA	Mon, Feb 14, 2022	46.24	47.00	45.78	46.21
6349	NASDAQ	ARTNA	Fri, Feb 11, 2022	46.14	46.96	45.80	46.21
6348	NASDAQ	ARTNA	Thu, Feb 10, 2022	46.17	46.88	45.58	46.10
6347	NASDAQ	ARTNA	Wed, Feb 9, 2022	46.81	46.96	46.20	46.59
6346	NASDAQ	ARTNA	Tue, Feb 8, 2022	46.41	47.23	46.15	46.70
6345	NASDAQ	ARTNA	Mon, Feb 7, 2022	46.13	47.29	46.13	46.81
6344	NASDAQ	ARTNA	Fri, Feb 4, 2022	46.83	46.83	45.47	45.84
6343	NASDAQ	ARTNA	Thu, Feb 3, 2022	46.72	46.94	45.62	46.55
6342	NASDAQ	ARTNA	Wed, Feb 2, 2022	47.26	47.60	45.90	46.41
6341	NASDAQ	ARTNA	Tue, Feb 1, 2022	47.85	47.85	46.39	47.26
6340	NASDAQ	ARTNA	Mon, Jan 31, 2022	48.40	49.00	47.70	48.20
6339	NASDAQ	ARTNA	Fri, Jan 28, 2022	47.09	48.77	47.09	48.43
6338	NASDAQ	ARTNA	Thu, Jan 27, 2022	47.36	47.89	46.56	47.48
6337	NASDAQ	ARTNA	Wed, Jan 26, 2022	47.47	47.95	45.80	47.01
6336	NASDAQ	ARTNA	Tue, Jan 25, 2022	45.24	46.81	45.24	45.93
6335	NASDAQ	ARTNA	Mon, Jan 24, 2022	44.64	46.00	44.60	45.52
6334	NASDAQ	ARTNA	Fri, Jan 21, 2022	44.78	45.04	44.10	44.58
6333	NASDAQ	ARTNA	Thu, Jan 20, 2022	44.35	45.00	43.90	44.54
6332	NASDAQ	ARTNA	Wed, Jan 19, 2022	44.01	44.60	43.84	44.05
6331	NASDAQ	ARTNA	Tue, Jan 18, 2022	44.20	44.71	44.00	44.08
6330	NASDAQ	ARTNA	Fri, Jan 14, 2022	44.00	44.82	44.00	44.65
6329	NASDAQ	ARTNA	Thu, Jan 13, 2022	44.46	45.20	43.59	44.66
6328	NASDAQ	ARTNA	Wed, Jan 12, 2022	44.05	44.05	43.02	43.65
6327	NASDAQ	ARTNA	Tue, Jan 11, 2022	44.60	44.60	43.04	43.94
6326	NASDAQ	ARTNA	Mon, Jan 10, 2022	43.65	44.43	43.58	44.02
6325	NASDAQ	ARTNA	Fri, Jan 7, 2022	43.39	44.93	43.39	43.92
6324	NASDAQ	ARTNA	Thu, Jan 6, 2022	44.52	45.33	44.15	44.60
6323	NASDAQ	ARTNA	Wed, Jan 5, 2022	45.56	45.57	44.50	44.84
6322	NASDAQ	ARTNA	Tue, Jan 4, 2022	46.07	46.11	45.37	45.50
6321	NASDAQ	ARTNA	Mon, Jan 3, 2022	46.43	46.75	45.82	46.04
6320	NASDAQ	ARTNA	Fri, Dec 31, 2021	45.97	47.17	45.77	46.33
6319	NASDAQ	ARTNA	Thu, Dec 30, 2021	46.36	46.91	46.11	46.11
6318	NASDAQ	ARTNA	Wed, Dec 29, 2021	46.84	47.49	46.29	46.36
6317	NASDAQ	ARTNA	Tue, Dec 28, 2021	46.19	46.94	45.11	46.65
6316	NASDAQ	ARTNA	Mon, Dec 27, 2021	47.12	47.82	45.52	45.87
6315	NASDAQ	ARTNA	Thu, Dec 23, 2021	46.73	47.34	46.19	46.81
6314	NASDAQ	ARTNA	Wed, Dec 22, 2021	45.58	46.57	45.58	46.47
6313	NASDAQ	ARTNA	Tue, Dec 21, 2021	46.90	46.98	45.56	45.77
6312	NASDAQ	ARTNA	Mon, Dec 20, 2021	46.66	46.86	45.51	46.53
6311	NASDAQ	ARTNA	Fri, Dec 17, 2021	43.31	47.99	43.05	47.62
6310	NASDAQ	ARTNA	Thu, Dec 16, 2021	42.51	44.21	41.62	43.03
6309	NASDAQ	ARTNA	Wed, Dec 15, 2021	42.00	42.71	41.87	42.28
6308	NASDAQ	ARTNA	Tue, Dec 14, 2021	42.14	43.75	41.52	42.21
6307	NASDAQ	ARTNA	Mon, Dec 13, 2021	42.27	43.37	42.10	42.38
6306	NASDAQ	ARTNA	Fri, Dec 10, 2021	42.75	42.75	42.06	42.60
6305	NASDAQ	ARTNA	Thu, Dec 9, 2021	42.53	43.53	42.02	42.45
6304	NASDAQ	ARTNA	Wed, Dec 8, 2021	42.35	43.33	42.35	42.79
6303	NASDAQ	ARTNA	Tue, Dec 7, 2021	42.60	43.31	42.01	42.63
6302	NASDAQ	ARTNA	Mon, Dec 6, 2021	42.46	42.85	42.00	42.73
6301	NASDAQ	ARTNA	Fri, Dec 3, 2021	43.11	43.11	42.07	42.29
6300	NASDAQ	ARTNA	Thu, Dec 2, 2021	42.70	43.40	42.04	42.78
6299	NASDAQ	ARTNA	Wed, Dec 1, 2021	43.43	43.61	42.04	42.04
6298	NASDAQ	ARTNA	Tue, Nov 30, 2021	43.43	43.43	42.08	42.76
6297	NASDAQ	ARTNA	Mon, Nov 29, 2021	42.75	45.31	41.96	43.74
6296	NASDAQ	ARTNA	Fri, Nov 26, 2021	43.83	43.83	41.90	42.75
6295	NASDAQ	ARTNA	Wed, Nov 24, 2021	44.55	45.55	44.40	44.69
6294	NASDAQ	ARTNA	Tue, Nov 23, 2021	45.43	46.16	45.07	45.28
6293	NASDAQ	ARTNA	Mon, Nov 22, 2021	44.50	46.49	44.02	45.30
6292	NASDAQ	ARTNA	Fri, Nov 19, 2021	43.79	44.76	43.59	44.33
6291	NASDAQ	ARTNA	Thu, Nov 18, 2021	43.62	44.25	42.75	43.94
6290	NASDAQ	ARTNA	Wed, Nov 17, 2021	43.52	43.63	43.00	43.63
6289	NASDAQ	ARTNA	Tue, Nov 16, 2021	43.26	43.54	42.69	43.26
6288	NASDAQ	ARTNA	Mon, Nov 15, 2021	43.46	43.65	42.47	43.08
6287	NASDAQ	ARTNA	Fri, Nov 12, 2021	42.29	43.68	41.51	42.95
6286	NASDAQ	ARTNA	Thu, Nov 11, 2021	41.96	42.61	41.60	42.29
6285	NASDAQ	ARTNA	Wed, Nov 10, 2021	41.89	42.78	41.45	42.11
6284	NASDAQ	ARTNA	Tue, Nov 9, 2021	42.15	42.21	41.69	41.69
6283	NASDAQ	ARTNA	Mon, Nov 8, 2021	42.43	42.86	41.62	42.13
6282	NASDAQ	ARTNA	Fri, Nov 5, 2021	40.82	42.77	40.82	42.22
6281	NASDAQ	ARTNA	Thu, Nov 4, 2021	40.83	41.38	40.36	40.80
6280	NASDAQ	ARTNA	Wed, Nov 3, 2021	40.35	41.30	40.01	40.99
6279	NASDAQ	ARTNA	Tue, Nov 2, 2021	40.64	40.70	40.25	40.55
6278	NASDAQ	ARTNA	Mon, Nov 1, 2021	40.41	40.65	39.97	40.45
6277	NASDAQ	ARTNA	Fri, Oct 29, 2021	39.90	40.40	39.65	40.22
6276	NASDAQ	ARTNA	Thu, Oct 28, 2021	39.92	40.17	39.60	39.84
6275	NASDAQ	ARTNA	Wed, Oct 27, 2021	40.04	40.04	38.99	39.69
6274	NASDAQ	ARTNA	Tue, Oct 26, 2021	39.72	39.99	39.20	39.38
6273	NASDAQ	ARTNA	Mon, Oct 25, 2021	39.30	40.01	39.21	39.79
6272	NASDAQ	ARTNA	Fri, Oct 22, 2021	39.37	39.65	38.80	39.35
6271	NASDAQ	ARTNA	Thu, Oct 21, 2021	38.93	39.55	38.55	39.55
6270	NASDAQ	ARTNA	Wed, Oct 20, 2021	38.70	39.03	38.56	38.85
6269	NASDAQ	ARTNA	Tue, Oct 19, 2021	38.38	38.84	38.08	38.78
6268	NASDAQ	ARTNA	Mon, Oct 18, 2021	39.07	39.14	38.40	38.41
6267	NASDAQ	ARTNA	Fri, Oct 15, 2021	39.43	39.43	38.59	39.27
6266	NASDAQ	ARTNA	Thu, Oct 14, 2021	38.70	39.11	38.47	39.01
6265	NASDAQ	ARTNA	Wed, Oct 13, 2021	38.77	38.77	38.12	38.12
6264	NASDAQ	ARTNA	Tue, Oct 12, 2021	38.26	38.59	37.93	38.31
6263	NASDAQ	ARTNA	Mon, Oct 11, 2021	38.36	38.39	37.60	38.31
6262	NASDAQ	ARTNA	Fri, Oct 8, 2021	38.72	38.72	38.03	38.28
6261	NASDAQ	ARTNA	Thu, Oct 7, 2021	38.64	39.00	38.32	38.54
6260	NASDAQ	ARTNA	Wed, Oct 6, 2021	38.21	38.55	38.21	38.51
6259	NASDAQ	ARTNA	Tue, Oct 5, 2021	38.29	38.29	37.84	38.05
6258	NASDAQ	ARTNA	Mon, Oct 4, 2021	38.02	38.35	37.82	38.14
6257	NASDAQ	ARTNA	Fri, Oct 1, 2021	38.21	38.40	38.02	38.19
6256	NASDAQ	ARTNA	Thu, Sep 30, 2021	38.63	38.84	38.07	38.17
6255	NASDAQ	ARTNA	Wed, Sep 29, 2021	38.49	38.74	38.10	38.68
6254	NASDAQ	ARTNA	Tue, Sep 28, 2021	38.74	39.14	37.91	38.31
6253	NASDAQ	ARTNA	Mon, Sep 27, 2021	38.49	39.63	38.49	39.02
6252	NASDAQ	ARTNA	Fri, Sep 24, 2021	38.60	38.68	38.05	38.68
6251	NASDAQ	ARTNA	Thu, Sep 23, 2021	38.47	38.87	37.92	38.67
6250	NASDAQ	ARTNA	Wed, Sep 22, 2021	38.50	38.96	37.96	38.33
6249	NASDAQ	ARTNA	Tue, Sep 21, 2021	37.90	38.60	37.90	38.24
6248	NASDAQ	ARTNA	Mon, Sep 20, 2021	37.60	38.04	37.30	37.61
6247	NASDAQ	ARTNA	Fri, Sep 17, 2021	38.15	38.38	37.51	37.97
6246	NASDAQ	ARTNA	Thu, Sep 16, 2021	37.86	37.86	37.03	37.74
6245	NASDAQ	ARTNA	Wed, Sep 15, 2021	36.97	37.97	36.86	37.79
6244	NASDAQ	ARTNA	Tue, Sep 14, 2021	37.16	37.37	36.56	36.66
6243	NASDAQ	ARTNA	Mon, Sep 13, 2021	37.22	37.68	36.55	36.81
6242	NASDAQ	ARTNA	Fri, Sep 10, 2021	38.32	38.79	37.13	37.13
6241	NASDAQ	ARTNA	Thu, Sep 9, 2021	38.34	38.80	38.03	38.03
6240	NASDAQ	ARTNA	Wed, Sep 8, 2021	38.56	38.90	38.20	38.68
6239	NASDAQ	ARTNA	Tue, Sep 7, 2021	39.23	39.23	38.51	38.60
6238	NASDAQ	ARTNA	Fri, Sep 3, 2021	38.97	39.49	38.83	39.27
6237	NASDAQ	ARTNA	Thu, Sep 2, 2021	39.64	39.74	38.76	39.02
6236	NASDAQ	ARTNA	Wed, Sep 1, 2021	39.38	39.83	38.95	39.47
6235	NASDAQ	ARTNA	Tue, Aug 31, 2021	39.43	40.19	39.28	39.41
6234	NASDAQ	ARTNA	Mon, Aug 30, 2021	38.45	39.64	38.45	39.25
6233	NASDAQ	ARTNA	Fri, Aug 27, 2021	38.57	39.35	38.51	38.51
6232	NASDAQ	ARTNA	Thu, Aug 26, 2021	38.48	38.82	38.20	38.20
6231	NASDAQ	ARTNA	Wed, Aug 25, 2021	38.78	39.00	38.52	38.55
6230	NASDAQ	ARTNA	Tue, Aug 24, 2021	38.60	39.08	38.60	38.94
6229	NASDAQ	ARTNA	Mon, Aug 23, 2021	38.17	39.08	37.83	38.85
6228	NASDAQ	ARTNA	Fri, Aug 20, 2021	38.31	38.31	37.61	37.88
6227	NASDAQ	ARTNA	Thu, Aug 19, 2021	38.16	38.49	37.67	38.21
6226	NASDAQ	ARTNA	Wed, Aug 18, 2021	38.43	38.85	38.01	38.23
6225	NASDAQ	ARTNA	Tue, Aug 17, 2021	38.77	38.99	38.32	38.47
6224	NASDAQ	ARTNA	Mon, Aug 16, 2021	39.09	39.30	38.75	38.89
6223	NASDAQ	ARTNA	Fri, Aug 13, 2021	38.30	39.19	38.30	39.18
6222	NASDAQ	ARTNA	Thu, Aug 12, 2021	39.29	39.29	38.26	38.40
6221	NASDAQ	ARTNA	Wed, Aug 11, 2021	38.82	39.52	38.79	39.26
6220	NASDAQ	ARTNA	Tue, Aug 10, 2021	39.24	39.25	39.02	39.14
6219	NASDAQ	ARTNA	Mon, Aug 9, 2021	39.17	39.70	39.16	39.22
6218	NASDAQ	ARTNA	Fri, Aug 6, 2021	40.06	40.45	39.70	39.70
6217	NASDAQ	ARTNA	Thu, Aug 5, 2021	39.72	40.24	39.41	40.19
6216	NASDAQ	ARTNA	Wed, Aug 4, 2021	39.57	40.10	39.52	39.69
6215	NASDAQ	ARTNA	Tue, Aug 3, 2021	39.38	40.13	39.38	39.75
6214	NASDAQ	ARTNA	Mon, Aug 2, 2021	39.14	39.59	39.07	39.54
6213	NASDAQ	ARTNA	Fri, Jul 30, 2021	39.13	39.44	39.08	39.08
6212	NASDAQ	ARTNA	Thu, Jul 29, 2021	39.01	39.39	38.84	39.17
6211	NASDAQ	ARTNA	Wed, Jul 28, 2021	38.75	38.95	38.42	38.84
6210	NASDAQ	ARTNA	Tue, Jul 27, 2021	38.61	39.16	38.61	38.98
6209	NASDAQ	ARTNA	Mon, Jul 26, 2021	38.54	39.01	38.31	38.88
6208	NASDAQ	ARTNA	Fri, Jul 23, 2021	38.14	38.57	38.00	38.43
6207	NASDAQ	ARTNA	Thu, Jul 22, 2021	38.22	38.40	37.85	37.95
6206	NASDAQ	ARTNA	Wed, Jul 21, 2021	38.69	38.91	38.27	38.30
6205	NASDAQ	ARTNA	Tue, Jul 20, 2021	38.45	39.49	38.00	38.51
6204	NASDAQ	ARTNA	Mon, Jul 19, 2021	37.86	38.50	37.76	38.27
6203	NASDAQ	ARTNA	Fri, Jul 16, 2021	37.79	38.30	37.55	38.22
6202	NASDAQ	ARTNA	Thu, Jul 15, 2021	37.15	37.89	37.00	37.84
6201	NASDAQ	ARTNA	Wed, Jul 14, 2021	37.06	37.49	37.06	37.30
6200	NASDAQ	ARTNA	Tue, Jul 13, 2021	37.19	37.32	37.03	37.19
6199	NASDAQ	ARTNA	Mon, Jul 12, 2021	37.27	37.29	36.85	37.29
6198	NASDAQ	ARTNA	Fri, Jul 9, 2021	37.54	37.95	37.02	37.27
6197	NASDAQ	ARTNA	Thu, Jul 8, 2021	37.73	37.75	36.75	36.90
6196	NASDAQ	ARTNA	Wed, Jul 7, 2021	37.48	38.30	37.44	37.94
6195	NASDAQ	ARTNA	Tue, Jul 6, 2021	38.07	38.29	37.08	37.30
6194	NASDAQ	ARTNA	Fri, Jul 2, 2021	38.03	38.99	37.69	38.74
6193	NASDAQ	ARTNA	Thu, Jul 1, 2021	37.33	37.93	36.87	37.77
6192	NASDAQ	ARTNA	Wed, Jun 30, 2021	37.20	37.20	36.70	36.77
6191	NASDAQ	ARTNA	Tue, Jun 29, 2021	37.49	37.80	36.80	36.83
6190	NASDAQ	ARTNA	Mon, Jun 28, 2021	36.79	37.46	36.65	37.09
6189	NASDAQ	ARTNA	Fri, Jun 25, 2021	36.43	37.30	36.25	36.64
6188	NASDAQ	ARTNA	Thu, Jun 24, 2021	36.60	37.08	36.05	36.46
6187	NASDAQ	ARTNA	Wed, Jun 23, 2021	37.20	37.20	35.90	36.63
6186	NASDAQ	ARTNA	Tue, Jun 22, 2021	37.54	37.54	36.03	36.78
6185	NASDAQ	ARTNA	Mon, Jun 21, 2021	37.61	37.61	36.80	36.97
6184	NASDAQ	ARTNA	Fri, Jun 18, 2021	38.42	39.06	36.13	36.13
6183	NASDAQ	ARTNA	Thu, Jun 17, 2021	40.19	40.42	38.60	38.96
6182	NASDAQ	ARTNA	Wed, Jun 16, 2021	41.29	41.29	40.34	40.41
6181	NASDAQ	ARTNA	Tue, Jun 15, 2021	41.19	41.19	40.73	40.96
6180	NASDAQ	ARTNA	Mon, Jun 14, 2021	41.04	41.47	40.97	41.15
6179	NASDAQ	ARTNA	Fri, Jun 11, 2021	41.24	41.54	41.20	41.37
6178	NASDAQ	ARTNA	Thu, Jun 10, 2021	41.62	41.80	41.07	41.35
6177	NASDAQ	ARTNA	Wed, Jun 9, 2021	41.52	42.00	41.45	41.50
6176	NASDAQ	ARTNA	Tue, Jun 8, 2021	41.26	41.44	41.16	41.44
6175	NASDAQ	ARTNA	Mon, Jun 7, 2021	40.95	41.38	40.52	41.22
6174	NASDAQ	ARTNA	Fri, Jun 4, 2021	40.93	41.14	40.90	40.94
6173	NASDAQ	ARTNA	Thu, Jun 3, 2021	40.97	41.13	40.80	41.03
6172	NASDAQ	ARTNA	Wed, Jun 2, 2021	40.51	40.82	40.50	40.80
6171	NASDAQ	ARTNA	Tue, Jun 1, 2021	41.00	41.00	40.27	40.30
6170	NASDAQ	ARTNA	Fri, May 28, 2021	41.94	41.94	41.24	41.24
6169	NASDAQ	ARTNA	Thu, May 27, 2021	41.75	41.75	41.22	41.42
6168	NASDAQ	ARTNA	Wed, May 26, 2021	40.60	42.11	40.50	41.43
6167	NASDAQ	ARTNA	Tue, May 25, 2021	40.74	40.86	40.31	40.70
6166	NASDAQ	ARTNA	Mon, May 24, 2021	40.38	41.01	40.38	40.97
6165	NASDAQ	ARTNA	Fri, May 21, 2021	40.97	40.97	40.06	40.65
6164	NASDAQ	ARTNA	Thu, May 20, 2021	40.28	40.74	40.17	40.66
6163	NASDAQ	ARTNA	Wed, May 19, 2021	39.57	40.22	39.21	39.90
6162	NASDAQ	ARTNA	Tue, May 18, 2021	40.19	40.49	39.34	39.34
6161	NASDAQ	ARTNA	Mon, May 17, 2021	39.63	40.43	39.50	40.27
6160	NASDAQ	ARTNA	Fri, May 14, 2021	39.61	40.13	39.30	39.50
6159	NASDAQ	ARTNA	Thu, May 13, 2021	38.75	39.80	38.75	39.62
6158	NASDAQ	ARTNA	Wed, May 12, 2021	39.20	39.40	38.58	38.62
6157	NASDAQ	ARTNA	Tue, May 11, 2021	39.89	39.93	39.14	39.19
6156	NASDAQ	ARTNA	Mon, May 10, 2021	40.37	40.50	39.35	39.67
6155	NASDAQ	ARTNA	Fri, May 7, 2021	40.76	41.15	40.32	40.32
6154	NASDAQ	ARTNA	Thu, May 6, 2021	40.12	41.12	40.00	40.98
6153	NASDAQ	ARTNA	Wed, May 5, 2021	39.70	40.78	39.52	40.57
6152	NASDAQ	ARTNA	Tue, May 4, 2021	41.00	41.00	40.09	40.11
6151	NASDAQ	ARTNA	Mon, May 3, 2021	40.40	41.18	40.25	40.88
6150	NASDAQ	ARTNA	Fri, Apr 30, 2021	39.49	40.49	39.37	40.45
6149	NASDAQ	ARTNA	Thu, Apr 29, 2021	39.50	39.79	39.42	39.42
6148	NASDAQ	ARTNA	Wed, Apr 28, 2021	39.43	39.70	39.03	39.44
6147	NASDAQ	ARTNA	Tue, Apr 27, 2021	39.81	40.00	39.03	39.44
6146	NASDAQ	ARTNA	Mon, Apr 26, 2021	40.37	40.69	39.76	39.76
6145	NASDAQ	ARTNA	Fri, Apr 23, 2021	40.19	40.70	40.04	40.35
6144	NASDAQ	ARTNA	Thu, Apr 22, 2021	40.58	40.72	39.89	39.89
6143	NASDAQ	ARTNA	Wed, Apr 21, 2021	40.44	40.70	40.25	40.25
6142	NASDAQ	ARTNA	Tue, Apr 20, 2021	40.38	40.78	40.31	40.76
6141	NASDAQ	ARTNA	Mon, Apr 19, 2021	41.13	41.13	40.37	40.70
6140	NASDAQ	ARTNA	Fri, Apr 16, 2021	41.81	42.00	41.03	41.44
6139	NASDAQ	ARTNA	Thu, Apr 15, 2021	40.55	41.51	40.52	41.51
6138	NASDAQ	ARTNA	Wed, Apr 14, 2021	40.07	40.44	40.07	40.28
6137	NASDAQ	ARTNA	Tue, Apr 13, 2021	40.44	40.70	40.00	40.25
6136	NASDAQ	ARTNA	Mon, Apr 12, 2021	39.71	40.57	39.71	40.22
6135	NASDAQ	ARTNA	Fri, Apr 9, 2021	40.46	40.46	39.74	40.00
6134	NASDAQ	ARTNA	Thu, Apr 8, 2021	40.27	40.75	40.00	40.18
6133	NASDAQ	ARTNA	Wed, Apr 7, 2021	40.57	40.57	39.59	39.89
6132	NASDAQ	ARTNA	Tue, Apr 6, 2021	40.07	40.87	40.07	40.61
6131	NASDAQ	ARTNA	Mon, Apr 5, 2021	39.65	40.90	39.65	40.29
6130	NASDAQ	ARTNA	Thu, Apr 1, 2021	39.48	40.22	39.18	39.70
6129	NASDAQ	ARTNA	Wed, Mar 31, 2021	39.89	40.45	39.26	39.38
6128	NASDAQ	ARTNA	Tue, Mar 30, 2021	39.63	40.90	39.13	39.64
6127	NASDAQ	ARTNA	Mon, Mar 29, 2021	39.04	39.86	38.97	39.71
6126	NASDAQ	ARTNA	Fri, Mar 26, 2021	39.22	40.02	38.56	39.30
6125	NASDAQ	ARTNA	Thu, Mar 25, 2021	39.16	39.97	38.84	39.21
6124	NASDAQ	ARTNA	Wed, Mar 24, 2021	39.22	39.85	38.86	39.08
6123	NASDAQ	ARTNA	Tue, Mar 23, 2021	38.94	40.30	38.79	38.79
6122	NASDAQ	ARTNA	Mon, Mar 22, 2021	40.51	40.97	39.11	39.31
6121	NASDAQ	ARTNA	Fri, Mar 19, 2021	40.25	40.85	39.59	40.85
6120	NASDAQ	ARTNA	Thu, Mar 18, 2021	40.29	41.32	39.80	39.80
6119	NASDAQ	ARTNA	Wed, Mar 17, 2021	41.49	41.98	40.03	40.10
6118	NASDAQ	ARTNA	Tue, Mar 16, 2021	42.17	42.29	41.15	42.01
6117	NASDAQ	ARTNA	Mon, Mar 15, 2021	42.01	42.70	41.64	42.53
6116	NASDAQ	ARTNA	Fri, Mar 12, 2021	40.30	42.40	40.30	42.33
6115	NASDAQ	ARTNA	Thu, Mar 11, 2021	40.00	40.64	39.43	40.39
6114	NASDAQ	ARTNA	Wed, Mar 10, 2021	40.00	40.64	39.61	40.25
6113	NASDAQ	ARTNA	Tue, Mar 9, 2021	39.61	40.26	39.09	40.03
6112	NASDAQ	ARTNA	Mon, Mar 8, 2021	38.50	39.97	38.50	39.45
6111	NASDAQ	ARTNA	Fri, Mar 5, 2021	37.65	38.80	37.65	38.66
6110	NASDAQ	ARTNA	Thu, Mar 4, 2021	37.65	38.64	37.30	37.30
6109	NASDAQ	ARTNA	Wed, Mar 3, 2021	37.78	37.95	37.35	37.64
6108	NASDAQ	ARTNA	Tue, Mar 2, 2021	37.33	37.69	37.00	37.41
6107	NASDAQ	ARTNA	Mon, Mar 1, 2021	37.77	37.77	37.10	37.54
6106	NASDAQ	ARTNA	Fri, Feb 26, 2021	37.70	38.05	37.00	37.00
6105	NASDAQ	ARTNA	Thu, Feb 25, 2021	39.17	39.17	37.59	37.70
6104	NASDAQ	ARTNA	Wed, Feb 24, 2021	38.58	39.14	38.00	38.77
6103	NASDAQ	ARTNA	Tue, Feb 23, 2021	38.22	39.71	38.08	38.08
6102	NASDAQ	ARTNA	Mon, Feb 22, 2021	38.28	38.31	37.76	38.06
6101	NASDAQ	ARTNA	Fri, Feb 19, 2021	37.95	38.50	37.95	38.20
6100	NASDAQ	ARTNA	Thu, Feb 18, 2021	38.70	39.00	38.00	38.05
6099	NASDAQ	ARTNA	Wed, Feb 17, 2021	38.78	38.78	38.01	38.58
6098	NASDAQ	ARTNA	Tue, Feb 16, 2021	38.99	38.99	38.19	38.49
6097	NASDAQ	ARTNA	Fri, Feb 12, 2021	39.36	39.81	38.68	38.83
6096	NASDAQ	ARTNA	Thu, Feb 11, 2021	40.17	40.17	39.01	39.17
6095	NASDAQ	ARTNA	Wed, Feb 10, 2021	40.41	40.83	39.77	39.84
6094	NASDAQ	ARTNA	Tue, Feb 9, 2021	39.47	40.96	39.47	40.41
6093	NASDAQ	ARTNA	Mon, Feb 8, 2021	39.66	40.19	39.16	39.47
6092	NASDAQ	ARTNA	Fri, Feb 5, 2021	40.57	40.57	39.51	39.91
6091	NASDAQ	ARTNA	Thu, Feb 4, 2021	40.22	41.00	40.22	41.00
6090	NASDAQ	ARTNA	Wed, Feb 3, 2021	40.66	40.80	39.94	40.23
6089	NASDAQ	ARTNA	Tue, Feb 2, 2021	40.94	41.02	40.16	40.92
6088	NASDAQ	ARTNA	Mon, Feb 1, 2021	40.66	40.78	39.83	40.58
6087	NASDAQ	ARTNA	Fri, Jan 29, 2021	39.50	41.45	39.01	40.88
6086	NASDAQ	ARTNA	Thu, Jan 28, 2021	38.76	40.00	38.57	39.32
6085	NASDAQ	ARTNA	Wed, Jan 27, 2021	37.88	38.69	37.71	38.51
6084	NASDAQ	ARTNA	Tue, Jan 26, 2021	37.89	38.60	37.89	38.43
6083	NASDAQ	ARTNA	Mon, Jan 25, 2021	38.03	38.24	37.60	37.89
6082	NASDAQ	ARTNA	Fri, Jan 22, 2021	37.56	38.55	37.50	38.39
6081	NASDAQ	ARTNA	Thu, Jan 21, 2021	38.16	38.16	37.45	37.86
6080	NASDAQ	ARTNA	Wed, Jan 20, 2021	38.19	38.55	37.63	37.88
6079	NASDAQ	ARTNA	Tue, Jan 19, 2021	38.51	38.52	37.80	38.23
6078	NASDAQ	ARTNA	Fri, Jan 15, 2021	38.57	38.95	38.10	38.70
6077	NASDAQ	ARTNA	Thu, Jan 14, 2021	38.84	39.19	38.70	38.89
6076	NASDAQ	ARTNA	Wed, Jan 13, 2021	39.10	39.18	38.35	38.63
6075	NASDAQ	ARTNA	Tue, Jan 12, 2021	38.24	38.62	37.88	38.60
6074	NASDAQ	ARTNA	Mon, Jan 11, 2021	38.25	38.29	37.60	38.25
6073	NASDAQ	ARTNA	Fri, Jan 8, 2021	38.20	38.43	37.95	38.42
6072	NASDAQ	ARTNA	Thu, Jan 7, 2021	38.29	38.29	37.61	38.17
6071	NASDAQ	ARTNA	Wed, Jan 6, 2021	37.07	39.21	36.91	38.36
6070	NASDAQ	ARTNA	Tue, Jan 5, 2021	36.98	36.98	36.68	36.87
6069	NASDAQ	ARTNA	Mon, Jan 4, 2021	37.16	37.49	36.72	36.79
6068	NASDAQ	ARTNA	Thu, Dec 31, 2020	36.95	37.30	36.73	37.08
6067	NASDAQ	ARTNA	Wed, Dec 30, 2020	36.67	37.15	36.55	36.80
6066	NASDAQ	ARTNA	Tue, Dec 29, 2020	36.89	37.26	36.80	36.92
6065	NASDAQ	ARTNA	Mon, Dec 28, 2020	37.19	37.55	37.19	37.31
6064	NASDAQ	ARTNA	Thu, Dec 24, 2020	37.33	37.33	36.70	37.05
6063	NASDAQ	ARTNA	Wed, Dec 23, 2020	37.15	37.39	37.00	37.03
6062	NASDAQ	ARTNA	Tue, Dec 22, 2020	37.20	37.74	36.53	36.94
6061	NASDAQ	ARTNA	Mon, Dec 21, 2020	37.10	37.61	36.38	37.14
6060	NASDAQ	ARTNA	Fri, Dec 18, 2020	38.68	38.68	36.50	37.33
6059	NASDAQ	ARTNA	Thu, Dec 17, 2020	38.67	39.21	38.45	38.60
6058	NASDAQ	ARTNA	Wed, Dec 16, 2020	39.76	39.76	38.47	38.55
6057	NASDAQ	ARTNA	Tue, Dec 15, 2020	38.81	39.52	38.63	39.20
6056	NASDAQ	ARTNA	Mon, Dec 14, 2020	39.53	39.68	38.87	38.91
6055	NASDAQ	ARTNA	Fri, Dec 11, 2020	38.84	39.89	38.83	39.36
6054	NASDAQ	ARTNA	Thu, Dec 10, 2020	39.42	39.66	38.71	39.17
6053	NASDAQ	ARTNA	Wed, Dec 9, 2020	38.73	39.45	38.35	39.24
6052	NASDAQ	ARTNA	Tue, Dec 8, 2020	38.21	38.82	38.11	38.80
6051	NASDAQ	ARTNA	Mon, Dec 7, 2020	38.22	38.76	38.06	38.50
6050	NASDAQ	ARTNA	Fri, Dec 4, 2020	37.98	38.49	37.88	38.08
6049	NASDAQ	ARTNA	Thu, Dec 3, 2020	38.17	38.17	37.60	37.60
6048	NASDAQ	ARTNA	Wed, Dec 2, 2020	37.76	38.26	36.31	38.08
6047	NASDAQ	ARTNA	Tue, Dec 1, 2020	37.57	38.26	37.28	37.48
6046	NASDAQ	ARTNA	Mon, Nov 30, 2020	38.38	38.38	36.62	36.97
6045	NASDAQ	ARTNA	Fri, Nov 27, 2020	38.56	38.56	37.90	38.10
6044	NASDAQ	ARTNA	Wed, Nov 25, 2020	37.98	38.51	37.52	38.30
6043	NASDAQ	ARTNA	Tue, Nov 24, 2020	37.77	38.50	37.39	38.14
6042	NASDAQ	ARTNA	Mon, Nov 23, 2020	37.47	37.90	37.14	37.39
6041	NASDAQ	ARTNA	Fri, Nov 20, 2020	37.46	38.01	37.19	37.32
6040	NASDAQ	ARTNA	Thu, Nov 19, 2020	39.02	39.02	37.26	37.93
6039	NASDAQ	ARTNA	Wed, Nov 18, 2020	39.29	39.61	38.04	38.30
6038	NASDAQ	ARTNA	Tue, Nov 17, 2020	39.33	39.68	38.93	38.93
6037	NASDAQ	ARTNA	Mon, Nov 16, 2020	39.19	39.96	38.77	39.72
6036	NASDAQ	ARTNA	Fri, Nov 13, 2020	38.73	39.55	38.59	39.06
6035	NASDAQ	ARTNA	Thu, Nov 12, 2020	40.00	40.26	38.26	38.65
6034	NASDAQ	ARTNA	Wed, Nov 11, 2020	40.26	40.26	39.21	40.11
6033	NASDAQ	ARTNA	Tue, Nov 10, 2020	37.46	39.94	37.33	39.85
6032	NASDAQ	ARTNA	Mon, Nov 9, 2020	35.99	38.40	35.99	37.10
6031	NASDAQ	ARTNA	Fri, Nov 6, 2020	35.92	35.92	35.44	35.65
6030	NASDAQ	ARTNA	Thu, Nov 5, 2020	35.48	36.38	35.48	36.10
6029	NASDAQ	ARTNA	Wed, Nov 4, 2020	36.09	36.55	35.50	35.58
6028	NASDAQ	ARTNA	Tue, Nov 3, 2020	35.57	36.60	35.51	36.49
6027	NASDAQ	ARTNA	Mon, Nov 2, 2020	35.58	35.66	35.10	35.27
6026	NASDAQ	ARTNA	Fri, Oct 30, 2020	35.16	35.67	35.04	35.23
6025	NASDAQ	ARTNA	Thu, Oct 29, 2020	35.30	35.47	34.50	35.16
6024	NASDAQ	ARTNA	Wed, Oct 28, 2020	36.00	36.18	35.10	35.12
6023	NASDAQ	ARTNA	Tue, Oct 27, 2020	36.34	36.61	36.06	36.21
6022	NASDAQ	ARTNA	Mon, Oct 26, 2020	36.09	36.29	35.85	36.27
6021	NASDAQ	ARTNA	Fri, Oct 23, 2020	36.77	36.77	36.25	36.34
6020	NASDAQ	ARTNA	Thu, Oct 22, 2020	36.62	37.38	36.32	36.72
6019	NASDAQ	ARTNA	Wed, Oct 21, 2020	36.36	36.90	36.36	36.58
6018	NASDAQ	ARTNA	Tue, Oct 20, 2020	37.22	37.51	35.98	36.53
6017	NASDAQ	ARTNA	Mon, Oct 19, 2020	37.29	38.22	37.07	37.16
6016	NASDAQ	ARTNA	Fri, Oct 16, 2020	37.02	38.81	36.67	37.18
6015	NASDAQ	ARTNA	Thu, Oct 15, 2020	36.30	37.18	35.40	37.18
6014	NASDAQ	ARTNA	Wed, Oct 14, 2020	35.91	36.60	35.91	36.43
6013	NASDAQ	ARTNA	Tue, Oct 13, 2020	36.20	36.49	35.90	36.18
6012	NASDAQ	ARTNA	Mon, Oct 12, 2020	34.80	36.60	34.65	36.27
6011	NASDAQ	ARTNA	Fri, Oct 9, 2020	35.10	35.10	34.70	34.81
6010	NASDAQ	ARTNA	Thu, Oct 8, 2020	35.12	35.29	34.91	35.10
6009	NASDAQ	ARTNA	Wed, Oct 7, 2020	34.82	35.03	34.79	34.90
6008	NASDAQ	ARTNA	Tue, Oct 6, 2020	35.30	35.30	34.53	34.64
6007	NASDAQ	ARTNA	Mon, Oct 5, 2020	35.06	35.25	35.00	35.08
6006	NASDAQ	ARTNA	Fri, Oct 2, 2020	34.63	35.23	34.50	35.08
6005	NASDAQ	ARTNA	Thu, Oct 1, 2020	34.69	34.78	34.37	34.78
6004	NASDAQ	ARTNA	Wed, Sep 30, 2020	34.51	34.91	34.36	34.47
6003	NASDAQ	ARTNA	Tue, Sep 29, 2020	34.30	34.62	34.10	34.30
6002	NASDAQ	ARTNA	Mon, Sep 28, 2020	33.95	34.42	33.89	34.27
6001	NASDAQ	ARTNA	Fri, Sep 25, 2020	33.34	33.86	33.34	33.76
6000	NASDAQ	ARTNA	Thu, Sep 24, 2020	33.01	33.59	33.01	33.34
5999	NASDAQ	ARTNA	Wed, Sep 23, 2020	33.35	33.88	33.09	33.11
5998	NASDAQ	ARTNA	Tue, Sep 22, 2020	33.92	34.34	33.21	33.38
5997	NASDAQ	ARTNA	Mon, Sep 21, 2020	34.11	34.46	33.52	33.95
5996	NASDAQ	ARTNA	Fri, Sep 18, 2020	34.54	34.66	34.00	34.66
5995	NASDAQ	ARTNA	Thu, Sep 17, 2020	33.90	34.61	33.90	34.45
5994	NASDAQ	ARTNA	Wed, Sep 16, 2020	34.34	34.72	34.25	34.27
5993	NASDAQ	ARTNA	Tue, Sep 15, 2020	34.58	34.89	34.24	34.24
5992	NASDAQ	ARTNA	Mon, Sep 14, 2020	34.07	34.62	34.07	34.44
5991	NASDAQ	ARTNA	Fri, Sep 11, 2020	34.63	34.63	33.95	33.95
5990	NASDAQ	ARTNA	Thu, Sep 10, 2020	34.99	34.99	34.39	34.52
5989	NASDAQ	ARTNA	Wed, Sep 9, 2020	34.88	35.16	34.66	34.77
5988	NASDAQ	ARTNA	Tue, Sep 8, 2020	34.72	34.78	34.06	34.56
5987	NASDAQ	ARTNA	Fri, Sep 4, 2020	35.38	35.38	34.59	34.59
5986	NASDAQ	ARTNA	Thu, Sep 3, 2020	35.43	35.50	34.80	35.05
5985	NASDAQ	ARTNA	Wed, Sep 2, 2020	34.89	35.59	34.89	35.18
5984	NASDAQ	ARTNA	Tue, Sep 1, 2020	35.20	35.28	34.62	34.89
5983	NASDAQ	ARTNA	Mon, Aug 31, 2020	34.94	35.29	34.92	35.19
5982	NASDAQ	ARTNA	Fri, Aug 28, 2020	35.41	35.41	34.91	35.03
5981	NASDAQ	ARTNA	Thu, Aug 27, 2020	35.38	35.57	35.03	35.17
5980	NASDAQ	ARTNA	Wed, Aug 26, 2020	35.96	35.96	35.12	35.16
5979	NASDAQ	ARTNA	Tue, Aug 25, 2020	35.97	35.99	35.55	35.84
5978	NASDAQ	ARTNA	Mon, Aug 24, 2020	35.70	36.10	35.41	36.04
5977	NASDAQ	ARTNA	Fri, Aug 21, 2020	35.87	35.87	35.25	35.41
5976	NASDAQ	ARTNA	Thu, Aug 20, 2020	35.57	35.99	35.46	35.67
5975	NASDAQ	ARTNA	Wed, Aug 19, 2020	35.91	36.30	35.61	35.70
5974	NASDAQ	ARTNA	Tue, Aug 18, 2020	36.50	36.60	35.84	35.87
5973	NASDAQ	ARTNA	Mon, Aug 17, 2020	36.65	37.07	36.44	36.56
5972	NASDAQ	ARTNA	Fri, Aug 14, 2020	36.51	36.80	36.06	36.66
5971	NASDAQ	ARTNA	Thu, Aug 13, 2020	36.17	36.59	36.12	36.59
5970	NASDAQ	ARTNA	Wed, Aug 12, 2020	37.13	37.17	36.09	36.17
5969	NASDAQ	ARTNA	Tue, Aug 11, 2020	37.87	37.98	36.62	36.76
5968	NASDAQ	ARTNA	Mon, Aug 10, 2020	37.62	38.44	37.53	37.65
5967	NASDAQ	ARTNA	Fri, Aug 7, 2020	35.26	37.67	35.26	37.56
5966	NASDAQ	ARTNA	Thu, Aug 6, 2020	35.50	35.50	34.98	35.26
5965	NASDAQ	ARTNA	Wed, Aug 5, 2020	35.77	35.77	35.38	35.64
5964	NASDAQ	ARTNA	Tue, Aug 4, 2020	35.29	35.68	35.18	35.65
5963	NASDAQ	ARTNA	Mon, Aug 3, 2020	35.25	35.33	34.82	35.23
5962	NASDAQ	ARTNA	Fri, Jul 31, 2020	35.60	36.01	34.62	35.08
5961	NASDAQ	ARTNA	Thu, Jul 30, 2020	36.10	36.11	35.44	35.75
5960	NASDAQ	ARTNA	Wed, Jul 29, 2020	36.12	36.51	36.10	36.39
5959	NASDAQ	ARTNA	Tue, Jul 28, 2020	35.62	36.24	35.62	36.14
5958	NASDAQ	ARTNA	Mon, Jul 27, 2020	36.15	36.20	35.65	35.73
5957	NASDAQ	ARTNA	Fri, Jul 24, 2020	36.82	36.93	36.12	36.14
5956	NASDAQ	ARTNA	Thu, Jul 23, 2020	36.46	36.91	36.45	36.82
5955	NASDAQ	ARTNA	Wed, Jul 22, 2020	36.83	37.05	36.44	36.70
5954	NASDAQ	ARTNA	Tue, Jul 21, 2020	36.94	37.25	36.58	36.92
5953	NASDAQ	ARTNA	Mon, Jul 20, 2020	36.49	36.73	36.23	36.66
5952	NASDAQ	ARTNA	Fri, Jul 17, 2020	35.67	36.60	35.67	36.58
5951	NASDAQ	ARTNA	Thu, Jul 16, 2020	35.31	35.96	35.30	35.70
5950	NASDAQ	ARTNA	Wed, Jul 15, 2020	35.75	36.12	35.37	35.40
5949	NASDAQ	ARTNA	Tue, Jul 14, 2020	35.29	35.30	34.81	35.28
5948	NASDAQ	ARTNA	Mon, Jul 13, 2020	35.63	35.75	34.96	35.01
5947	NASDAQ	ARTNA	Fri, Jul 10, 2020	34.46	35.58	34.46	35.42
5946	NASDAQ	ARTNA	Thu, Jul 9, 2020	35.33	35.33	34.20	34.43
5945	NASDAQ	ARTNA	Wed, Jul 8, 2020	35.52	35.76	34.91	35.32
5944	NASDAQ	ARTNA	Tue, Jul 7, 2020	35.99	35.99	35.28	35.45
5943	NASDAQ	ARTNA	Mon, Jul 6, 2020	36.99	36.99	35.98	36.07
5942	NASDAQ	ARTNA	Thu, Jul 2, 2020	36.10	36.83	36.10	36.60
5941	NASDAQ	ARTNA	Wed, Jul 1, 2020	36.21	36.45	35.81	36.05
5940	NASDAQ	ARTNA	Tue, Jun 30, 2020	35.32	36.48	35.32	36.29
5939	NASDAQ	ARTNA	Mon, Jun 29, 2020	35.96	36.07	35.09	35.42
5938	NASDAQ	ARTNA	Fri, Jun 26, 2020	34.83	36.26	34.35	35.79
5937	NASDAQ	ARTNA	Thu, Jun 25, 2020	34.67	35.36	34.65	35.20
5936	NASDAQ	ARTNA	Wed, Jun 24, 2020	34.71	35.35	34.41	34.67
5935	NASDAQ	ARTNA	Tue, Jun 23, 2020	34.56	35.37	34.45	35.05
5934	NASDAQ	ARTNA	Mon, Jun 22, 2020	34.50	34.97	34.16	34.46
5933	NASDAQ	ARTNA	Fri, Jun 19, 2020	35.21	35.32	34.12	34.37
5932	NASDAQ	ARTNA	Thu, Jun 18, 2020	34.26	35.34	34.11	34.74
5931	NASDAQ	ARTNA	Wed, Jun 17, 2020	35.08	35.10	34.10	34.15
5930	NASDAQ	ARTNA	Tue, Jun 16, 2020	35.54	35.77	34.72	34.86
5929	NASDAQ	ARTNA	Mon, Jun 15, 2020	33.72	35.21	33.50	35.10
5928	NASDAQ	ARTNA	Fri, Jun 12, 2020	34.50	34.58	33.37	34.32
5927	NASDAQ	ARTNA	Thu, Jun 11, 2020	34.81	35.02	33.67	33.74
5926	NASDAQ	ARTNA	Wed, Jun 10, 2020	35.76	35.93	35.37	35.47
5925	NASDAQ	ARTNA	Tue, Jun 9, 2020	35.96	35.97	34.74	35.55
5924	NASDAQ	ARTNA	Mon, Jun 8, 2020	36.37	36.77	36.01	36.25
5923	NASDAQ	ARTNA	Fri, Jun 5, 2020	35.95	36.87	35.51	36.39
5922	NASDAQ	ARTNA	Thu, Jun 4, 2020	35.73	35.86	34.91	35.40
5921	NASDAQ	ARTNA	Wed, Jun 3, 2020	35.64	36.50	35.44	35.94
5920	NASDAQ	ARTNA	Tue, Jun 2, 2020	34.98	35.34	34.93	35.34
5919	NASDAQ	ARTNA	Mon, Jun 1, 2020	35.26	35.85	34.95	35.14
5918	NASDAQ	ARTNA	Fri, May 29, 2020	35.13	35.37	34.52	35.11
5917	NASDAQ	ARTNA	Thu, May 28, 2020	35.30	35.64	34.95	35.03
5916	NASDAQ	ARTNA	Wed, May 27, 2020	35.28	35.28	34.53	34.95
5915	NASDAQ	ARTNA	Tue, May 26, 2020	35.00	35.00	34.45	34.53
5914	NASDAQ	ARTNA	Fri, May 22, 2020	34.51	34.51	33.61	33.98
5913	NASDAQ	ARTNA	Thu, May 21, 2020	34.68	34.77	34.01	34.41
5912	NASDAQ	ARTNA	Wed, May 20, 2020	33.87	34.77	33.51	34.60
5911	NASDAQ	ARTNA	Tue, May 19, 2020	34.62	34.62	33.28	33.34
5910	NASDAQ	ARTNA	Mon, May 18, 2020	33.15	34.95	33.10	34.93
5909	NASDAQ	ARTNA	Fri, May 15, 2020	32.89	32.95	31.89	32.75
5908	NASDAQ	ARTNA	Thu, May 14, 2020	33.00	33.29	31.99	32.97
5907	NASDAQ	ARTNA	Wed, May 13, 2020	33.88	34.02	32.81	33.50
5906	NASDAQ	ARTNA	Tue, May 12, 2020	36.27	36.27	34.25	34.30
5905	NASDAQ	ARTNA	Mon, May 11, 2020	35.59	36.51	35.30	36.42
5904	NASDAQ	ARTNA	Fri, May 8, 2020	35.11	35.88	35.10	35.65
5903	NASDAQ	ARTNA	Thu, May 7, 2020	35.30	35.74	34.29	34.61
5902	NASDAQ	ARTNA	Wed, May 6, 2020	34.89	35.29	34.56	35.01
5901	NASDAQ	ARTNA	Tue, May 5, 2020	35.40	35.79	34.85	34.85
5900	NASDAQ	ARTNA	Mon, May 4, 2020	34.45	35.54	34.20	35.39
5899	NASDAQ	ARTNA	Fri, May 1, 2020	34.40	34.66	34.02	34.32
5898	NASDAQ	ARTNA	Thu, Apr 30, 2020	35.60	35.60	34.38	34.53
5897	NASDAQ	ARTNA	Wed, Apr 29, 2020	35.84	36.84	34.98	36.04
5896	NASDAQ	ARTNA	Tue, Apr 28, 2020	35.63	35.63	34.98	35.08
5895	NASDAQ	ARTNA	Mon, Apr 27, 2020	34.68	35.24	34.66	35.11
5894	NASDAQ	ARTNA	Fri, Apr 24, 2020	33.86	34.65	33.85	34.10
5893	NASDAQ	ARTNA	Thu, Apr 23, 2020	34.40	34.75	33.93	33.95
5892	NASDAQ	ARTNA	Wed, Apr 22, 2020	34.94	35.05	34.25	34.56
5891	NASDAQ	ARTNA	Tue, Apr 21, 2020	34.52	34.93	34.23	34.70
5890	NASDAQ	ARTNA	Mon, Apr 20, 2020	35.36	35.64	34.53	35.31
5889	NASDAQ	ARTNA	Fri, Apr 17, 2020	36.20	36.85	35.39	36.05
5888	NASDAQ	ARTNA	Thu, Apr 16, 2020	36.11	36.51	34.60	35.69
5887	NASDAQ	ARTNA	Wed, Apr 15, 2020	36.78	36.93	35.68	36.04
5886	NASDAQ	ARTNA	Tue, Apr 14, 2020	37.78	37.92	36.77	37.20
5885	NASDAQ	ARTNA	Mon, Apr 13, 2020	36.93	37.46	36.39	37.41
5884	NASDAQ	ARTNA	Thu, Apr 9, 2020	36.40	37.40	36.40	37.40
5883	NASDAQ	ARTNA	Wed, Apr 8, 2020	36.55	36.65	35.76	36.30
5882	NASDAQ	ARTNA	Tue, Apr 7, 2020	37.75	38.07	35.56	36.41
5881	NASDAQ	ARTNA	Mon, Apr 6, 2020	36.12	37.74	36.12	37.56
5880	NASDAQ	ARTNA	Fri, Apr 3, 2020	35.43	36.23	34.55	35.17
5879	NASDAQ	ARTNA	Thu, Apr 2, 2020	35.82	36.95	34.91	35.88
5878	NASDAQ	ARTNA	Wed, Apr 1, 2020	36.07	36.47	35.43	35.64
5877	NASDAQ	ARTNA	Tue, Mar 31, 2020	36.96	37.38	35.76	37.38
5876	NASDAQ	ARTNA	Mon, Mar 30, 2020	36.50	36.99	35.77	36.98
5875	NASDAQ	ARTNA	Fri, Mar 27, 2020	34.95	37.50	34.73	36.06
5874	NASDAQ	ARTNA	Thu, Mar 26, 2020	34.96	36.03	34.75	36.03
5873	NASDAQ	ARTNA	Wed, Mar 25, 2020	33.41	35.58	32.78	35.28
5872	NASDAQ	ARTNA	Tue, Mar 24, 2020	32.00	34.00	30.89	34.00
5871	NASDAQ	ARTNA	Mon, Mar 23, 2020	33.37	33.68	30.01	31.24
5870	NASDAQ	ARTNA	Fri, Mar 20, 2020	34.58	34.58	32.51	32.69
5869	NASDAQ	ARTNA	Thu, Mar 19, 2020	32.71	35.25	32.08	35.18
5868	NASDAQ	ARTNA	Wed, Mar 18, 2020	34.22	34.30	30.10	33.25
5867	NASDAQ	ARTNA	Tue, Mar 17, 2020	32.91	35.12	31.25	35.12
5866	NASDAQ	ARTNA	Mon, Mar 16, 2020	33.00	33.00	30.06	32.78
5865	NASDAQ	ARTNA	Fri, Mar 13, 2020	34.95	35.00	32.16	33.75
5864	NASDAQ	ARTNA	Thu, Mar 12, 2020	31.54	34.09	31.52	33.89
5863	NASDAQ	ARTNA	Wed, Mar 11, 2020	35.07	35.28	33.15	33.35
5862	NASDAQ	ARTNA	Tue, Mar 10, 2020	35.37	35.74	34.68	35.64
5861	NASDAQ	ARTNA	Mon, Mar 9, 2020	34.56	35.34	34.56	35.32
5860	NASDAQ	ARTNA	Fri, Mar 6, 2020	34.64	35.70	34.63	35.53
5859	NASDAQ	ARTNA	Thu, Mar 5, 2020	36.22	36.51	34.93	35.49
5858	NASDAQ	ARTNA	Wed, Mar 4, 2020	34.84	36.74	34.47	36.74
5857	NASDAQ	ARTNA	Tue, Mar 3, 2020	34.75	35.13	34.30	34.84
5856	NASDAQ	ARTNA	Mon, Mar 2, 2020	34.86	35.45	34.50	34.76
5855	NASDAQ	ARTNA	Fri, Feb 28, 2020	35.25	35.74	34.04	34.33
5854	NASDAQ	ARTNA	Thu, Feb 27, 2020	37.01	37.10	35.97	35.97
5853	NASDAQ	ARTNA	Wed, Feb 26, 2020	36.75	37.44	36.73	37.30
5852	NASDAQ	ARTNA	Tue, Feb 25, 2020	37.17	37.62	36.73	36.73
5851	NASDAQ	ARTNA	Mon, Feb 24, 2020	37.19	37.85	37.12	37.12
5850	NASDAQ	ARTNA	Fri, Feb 21, 2020	37.44	37.79	37.44	37.44
5849	NASDAQ	ARTNA	Thu, Feb 20, 2020	37.49	37.83	37.28	37.35
5848	NASDAQ	ARTNA	Wed, Feb 19, 2020	37.73	37.87	37.50	37.50
5847	NASDAQ	ARTNA	Tue, Feb 18, 2020	37.49	37.91	37.49	37.53
5846	NASDAQ	ARTNA	Fri, Feb 14, 2020	37.75	38.18	37.54	37.78
5845	NASDAQ	ARTNA	Thu, Feb 13, 2020	37.03	37.72	37.03	37.67
5844	NASDAQ	ARTNA	Wed, Feb 12, 2020	37.15	37.49	37.00	37.30
5843	NASDAQ	ARTNA	Tue, Feb 11, 2020	37.61	37.61	37.15	37.15
5842	NASDAQ	ARTNA	Mon, Feb 10, 2020	37.07	37.65	37.07	37.30
5841	NASDAQ	ARTNA	Fri, Feb 7, 2020	37.32	37.68	37.13	37.30
5840	NASDAQ	ARTNA	Thu, Feb 6, 2020	38.04	38.04	37.16	37.39
5839	NASDAQ	ARTNA	Wed, Feb 5, 2020	37.08	38.63	37.07	38.04
5838	NASDAQ	ARTNA	Tue, Feb 4, 2020	37.26	37.26	36.95	36.97
5837	NASDAQ	ARTNA	Mon, Feb 3, 2020	37.91	37.97	37.45	37.46
5836	NASDAQ	ARTNA	Fri, Jan 31, 2020	39.16	39.18	37.65	37.72
5835	NASDAQ	ARTNA	Thu, Jan 30, 2020	38.92	39.40	38.92	39.39
5834	NASDAQ	ARTNA	Wed, Jan 29, 2020	39.14	39.20	38.99	39.19
5833	NASDAQ	ARTNA	Tue, Jan 28, 2020	39.20	39.39	39.00	39.25
5832	NASDAQ	ARTNA	Mon, Jan 27, 2020	38.94	39.28	38.94	39.04
5831	NASDAQ	ARTNA	Fri, Jan 24, 2020	39.16	39.18	38.87	39.01
5830	NASDAQ	ARTNA	Thu, Jan 23, 2020	39.08	39.28	38.81	39.04
5829	NASDAQ	ARTNA	Wed, Jan 22, 2020	38.99	39.51	38.72	39.01
5828	NASDAQ	ARTNA	Tue, Jan 21, 2020	39.18	39.60	38.46	39.03
5827	NASDAQ	ARTNA	Fri, Jan 17, 2020	38.80	39.50	38.45	39.20
5826	NASDAQ	ARTNA	Thu, Jan 16, 2020	37.39	38.73	37.34	38.62
5825	NASDAQ	ARTNA	Wed, Jan 15, 2020	37.24	37.33	37.12	37.19
5824	NASDAQ	ARTNA	Tue, Jan 14, 2020	36.68	37.31	36.68	37.11
5823	NASDAQ	ARTNA	Mon, Jan 13, 2020	36.44	36.86	36.44	36.86
5822	NASDAQ	ARTNA	Fri, Jan 10, 2020	36.27	36.63	36.26	36.43
5821	NASDAQ	ARTNA	Thu, Jan 9, 2020	36.56	36.60	36.30	36.47
5820	NASDAQ	ARTNA	Wed, Jan 8, 2020	36.57	36.84	36.29	36.50
5819	NASDAQ	ARTNA	Tue, Jan 7, 2020	36.69	36.98	36.35	36.46
5818	NASDAQ	ARTNA	Mon, Jan 6, 2020	36.50	36.88	36.43	36.71
5817	NASDAQ	ARTNA	Fri, Jan 3, 2020	36.29	36.71	36.29	36.69
5816	NASDAQ	ARTNA	Thu, Jan 2, 2020	37.16	37.20	36.55	36.78
5815	NASDAQ	ARTNA	Tue, Dec 31, 2019	37.25	37.50	37.21	37.21
5814	NASDAQ	ARTNA	Mon, Dec 30, 2019	37.32	37.39	37.12	37.12
5813	NASDAQ	ARTNA	Fri, Dec 27, 2019	37.19	37.38	37.17	37.37
5812	NASDAQ	ARTNA	Thu, Dec 26, 2019	37.20	37.24	37.01	37.01
5811	NASDAQ	ARTNA	Tue, Dec 24, 2019	37.10	37.15	37.00	37.03
5810	NASDAQ	ARTNA	Mon, Dec 23, 2019	37.21	37.57	37.00	37.23
5809	NASDAQ	ARTNA	Fri, Dec 20, 2019	37.14	37.51	37.05	37.29
5808	NASDAQ	ARTNA	Thu, Dec 19, 2019	37.64	37.69	37.02	37.09
5807	NASDAQ	ARTNA	Wed, Dec 18, 2019	37.44	37.67	37.28	37.50
5806	NASDAQ	ARTNA	Tue, Dec 17, 2019	37.38	37.52	37.07	37.31
5805	NASDAQ	ARTNA	Mon, Dec 16, 2019	37.00	37.47	36.76	37.36
5804	NASDAQ	ARTNA	Fri, Dec 13, 2019	36.72	37.07	36.52	37.07
5803	NASDAQ	ARTNA	Thu, Dec 12, 2019	37.23	37.29	36.66	36.84
5802	NASDAQ	ARTNA	Wed, Dec 11, 2019	37.40	37.71	37.05	37.27
5801	NASDAQ	ARTNA	Tue, Dec 10, 2019	37.25	37.45	37.07	37.40
5800	NASDAQ	ARTNA	Mon, Dec 9, 2019	37.83	37.83	37.04	37.13
5799	NASDAQ	ARTNA	Fri, Dec 6, 2019	37.01	37.84	37.01	37.71
5798	NASDAQ	ARTNA	Thu, Dec 5, 2019	37.67	37.67	37.04	37.37
5797	NASDAQ	ARTNA	Wed, Dec 4, 2019	37.59	37.71	37.34	37.44
5796	NASDAQ	ARTNA	Tue, Dec 3, 2019	36.88	37.44	36.84	37.40
5795	NASDAQ	ARTNA	Mon, Dec 2, 2019	37.27	37.27	36.80	37.12
5794	NASDAQ	ARTNA	Fri, Nov 29, 2019	37.32	37.59	37.20	37.20
5793	NASDAQ	ARTNA	Wed, Nov 27, 2019	37.07	37.74	37.03	37.40
5792	NASDAQ	ARTNA	Tue, Nov 26, 2019	36.84	37.36	36.84	37.23
5791	NASDAQ	ARTNA	Mon, Nov 25, 2019	36.53	37.10	36.27	37.10
5790	NASDAQ	ARTNA	Fri, Nov 22, 2019	36.65	36.69	36.00	36.69
5789	NASDAQ	ARTNA	Thu, Nov 21, 2019	37.25	37.25	36.16	36.21
5788	NASDAQ	ARTNA	Wed, Nov 20, 2019	36.59	37.43	36.59	37.00
5787	NASDAQ	ARTNA	Tue, Nov 19, 2019	36.36	36.74	36.24	36.74
5786	NASDAQ	ARTNA	Mon, Nov 18, 2019	36.48	36.64	36.21	36.59
5785	NASDAQ	ARTNA	Fri, Nov 15, 2019	36.60	36.82	36.41	36.41
5784	NASDAQ	ARTNA	Thu, Nov 14, 2019	36.92	37.32	36.41	36.41
5783	NASDAQ	ARTNA	Wed, Nov 13, 2019	36.53	37.11	36.52	37.11
5782	NASDAQ	ARTNA	Tue, Nov 12, 2019	36.65	36.84	36.45	36.52
5781	NASDAQ	ARTNA	Mon, Nov 11, 2019	37.02	37.03	36.60	36.78
5780	NASDAQ	ARTNA	Fri, Nov 8, 2019	37.22	37.28	37.00	37.15
5779	NASDAQ	ARTNA	Thu, Nov 7, 2019	37.14	37.27	36.82	37.04
5778	NASDAQ	ARTNA	Wed, Nov 6, 2019	37.16	37.38	36.71	37.10
5777	NASDAQ	ARTNA	Tue, Nov 5, 2019	37.15	37.37	36.65	37.37
5776	NASDAQ	ARTNA	Mon, Nov 4, 2019	36.92	37.17	36.61	37.17
5775	NASDAQ	ARTNA	Fri, Nov 1, 2019	37.29	37.39	37.10	37.35
5774	NASDAQ	ARTNA	Thu, Oct 31, 2019	36.78	37.17	36.69	37.10
5773	NASDAQ	ARTNA	Wed, Oct 30, 2019	36.80	37.14	36.73	37.09
5772	NASDAQ	ARTNA	Tue, Oct 29, 2019	36.55	37.03	36.45	36.96
5771	NASDAQ	ARTNA	Mon, Oct 28, 2019	36.78	37.00	36.65	36.75
5770	NASDAQ	ARTNA	Fri, Oct 25, 2019	37.02	37.14	36.64	36.64
5769	NASDAQ	ARTNA	Thu, Oct 24, 2019	37.11	37.20	36.76	37.13
5768	NASDAQ	ARTNA	Wed, Oct 23, 2019	37.55	37.75	36.88	37.22
5767	NASDAQ	ARTNA	Tue, Oct 22, 2019	37.70	37.84	37.12	37.30
5766	NASDAQ	ARTNA	Mon, Oct 21, 2019	37.48	37.82	37.35	37.73
5765	NASDAQ	ARTNA	Fri, Oct 18, 2019	36.82	37.29	36.67	37.24
5764	NASDAQ	ARTNA	Thu, Oct 17, 2019	36.80	37.50	36.80	36.85
5763	NASDAQ	ARTNA	Wed, Oct 16, 2019	36.15	36.90	36.14	36.68
5762	NASDAQ	ARTNA	Tue, Oct 15, 2019	36.19	36.65	35.88	35.90
5761	NASDAQ	ARTNA	Mon, Oct 14, 2019	36.59	36.66	36.29	36.41
5760	NASDAQ	ARTNA	Fri, Oct 11, 2019	36.87	37.45	36.73	36.73
5759	NASDAQ	ARTNA	Thu, Oct 10, 2019	37.03	37.15	36.51	37.01
5758	NASDAQ	ARTNA	Wed, Oct 9, 2019	36.71	37.15	36.52	36.82
5757	NASDAQ	ARTNA	Tue, Oct 8, 2019	36.70	36.90	36.61	36.76
5756	NASDAQ	ARTNA	Mon, Oct 7, 2019	37.05	37.16	36.96	37.01
5755	NASDAQ	ARTNA	Fri, Oct 4, 2019	36.90	37.27	36.81	37.21
5754	NASDAQ	ARTNA	Thu, Oct 3, 2019	36.25	36.73	36.12	36.70
5753	NASDAQ	ARTNA	Wed, Oct 2, 2019	36.30	36.61	36.26	36.38
5752	NASDAQ	ARTNA	Tue, Oct 1, 2019	36.81	37.33	36.31	36.31
5751	NASDAQ	ARTNA	Mon, Sep 30, 2019	37.24	37.32	37.00	37.00
5750	NASDAQ	ARTNA	Fri, Sep 27, 2019	37.20	37.43	37.15	37.15
5749	NASDAQ	ARTNA	Thu, Sep 26, 2019	37.49	37.66	36.89	37.18
5748	NASDAQ	ARTNA	Wed, Sep 25, 2019	36.34	37.25	36.06	37.11
5747	NASDAQ	ARTNA	Tue, Sep 24, 2019	36.26	36.85	36.26	36.66
5746	NASDAQ	ARTNA	Mon, Sep 23, 2019	36.22	36.54	36.01	36.54
5745	NASDAQ	ARTNA	Fri, Sep 20, 2019	36.64	36.86	35.95	36.33
5744	NASDAQ	ARTNA	Thu, Sep 19, 2019	36.36	36.88	36.31	36.77
5743	NASDAQ	ARTNA	Wed, Sep 18, 2019	36.40	36.66	36.03	36.09
5742	NASDAQ	ARTNA	Tue, Sep 17, 2019	36.41	36.92	36.26	36.37
5741	NASDAQ	ARTNA	Mon, Sep 16, 2019	36.64	36.74	36.34	36.65
5740	NASDAQ	ARTNA	Fri, Sep 13, 2019	37.36	37.77	36.67	36.69
5739	NASDAQ	ARTNA	Thu, Sep 12, 2019	37.07	37.36	37.02	37.20
5738	NASDAQ	ARTNA	Wed, Sep 11, 2019	36.29	37.37	35.87	37.27
5737	NASDAQ	ARTNA	Tue, Sep 10, 2019	35.48	36.53	35.35	36.04
5736	NASDAQ	ARTNA	Mon, Sep 9, 2019	35.64	35.69	35.23	35.69
5735	NASDAQ	ARTNA	Fri, Sep 6, 2019	35.86	35.90	35.42	35.42
5734	NASDAQ	ARTNA	Thu, Sep 5, 2019	35.63	36.55	35.39	35.99
5733	NASDAQ	ARTNA	Wed, Sep 4, 2019	36.42	36.42	35.51	35.51
5732	NASDAQ	ARTNA	Tue, Sep 3, 2019	36.40	36.48	36.05	36.07
5731	NASDAQ	ARTNA	Fri, Aug 30, 2019	36.11	36.40	36.11	36.40
5730	NASDAQ	ARTNA	Thu, Aug 29, 2019	36.58	36.58	36.06	36.08
5729	NASDAQ	ARTNA	Wed, Aug 28, 2019	35.88	36.31	35.88	36.27
5728	NASDAQ	ARTNA	Tue, Aug 27, 2019	35.88	36.10	35.48	35.65
5727	NASDAQ	ARTNA	Mon, Aug 26, 2019	35.72	36.03	35.67	35.87
5726	NASDAQ	ARTNA	Fri, Aug 23, 2019	36.73	36.73	35.51	35.51
5725	NASDAQ	ARTNA	Thu, Aug 22, 2019	37.00	37.10	36.60	36.66
5724	NASDAQ	ARTNA	Wed, Aug 21, 2019	36.96	37.00	36.33	37.00
5723	NASDAQ	ARTNA	Tue, Aug 20, 2019	36.81	36.81	36.52	36.69
5722	NASDAQ	ARTNA	Mon, Aug 19, 2019	36.61	36.80	36.26	36.70
5721	NASDAQ	ARTNA	Fri, Aug 16, 2019	35.67	36.61	35.60	36.61
5720	NASDAQ	ARTNA	Thu, Aug 15, 2019	35.46	35.87	35.33	35.55
5719	NASDAQ	ARTNA	Wed, Aug 14, 2019	35.70	35.83	35.12	35.12
5718	NASDAQ	ARTNA	Tue, Aug 13, 2019	36.32	36.46	35.72	35.83
5717	NASDAQ	ARTNA	Mon, Aug 12, 2019	35.07	36.35	35.07	36.34
5716	NASDAQ	ARTNA	Fri, Aug 9, 2019	36.13	36.13	34.95	35.03
5715	NASDAQ	ARTNA	Thu, Aug 8, 2019	35.32	36.43	35.32	36.01
5714	NASDAQ	ARTNA	Wed, Aug 7, 2019	35.10	35.79	35.10	35.59
5713	NASDAQ	ARTNA	Tue, Aug 6, 2019	35.20	35.55	34.94	35.12
5712	NASDAQ	ARTNA	Mon, Aug 5, 2019	35.64	35.64	34.71	34.85
5711	NASDAQ	ARTNA	Fri, Aug 2, 2019	35.67	35.95	35.44	35.64
5710	NASDAQ	ARTNA	Thu, Aug 1, 2019	36.04	36.35	35.51	35.51
5709	NASDAQ	ARTNA	Wed, Jul 31, 2019	36.05	36.44	35.90	35.98
5708	NASDAQ	ARTNA	Tue, Jul 30, 2019	35.49	36.20	35.49	35.99
5707	NASDAQ	ARTNA	Mon, Jul 29, 2019	34.89	35.69	34.89	35.53
5706	NASDAQ	ARTNA	Fri, Jul 26, 2019	34.91	35.37	34.75	34.87
5705	NASDAQ	ARTNA	Thu, Jul 25, 2019	35.30	35.30	34.82	34.83
5704	NASDAQ	ARTNA	Wed, Jul 24, 2019	35.51	35.58	35.27	35.30
5703	NASDAQ	ARTNA	Tue, Jul 23, 2019	35.60	35.68	35.16	35.60
5702	NASDAQ	ARTNA	Mon, Jul 22, 2019	35.76	36.29	35.59	35.70
5701	NASDAQ	ARTNA	Fri, Jul 19, 2019	35.81	36.14	35.76	35.76
5700	NASDAQ	ARTNA	Thu, Jul 18, 2019	36.01	36.14	35.83	36.04
5699	NASDAQ	ARTNA	Wed, Jul 17, 2019	35.95	36.16	35.70	36.01
5698	NASDAQ	ARTNA	Tue, Jul 16, 2019	36.30	36.31	36.00	36.09
5697	NASDAQ	ARTNA	Mon, Jul 15, 2019	36.43	36.45	36.01	36.23
5696	NASDAQ	ARTNA	Fri, Jul 12, 2019	36.35	36.72	36.29	36.41
5695	NASDAQ	ARTNA	Thu, Jul 11, 2019	36.20	36.70	36.20	36.35
5694	NASDAQ	ARTNA	Wed, Jul 10, 2019	36.83	36.83	36.37	36.50
5693	NASDAQ	ARTNA	Tue, Jul 9, 2019	36.69	36.78	36.44	36.60
5692	NASDAQ	ARTNA	Mon, Jul 8, 2019	36.58	36.96	36.53	36.87
5691	NASDAQ	ARTNA	Fri, Jul 5, 2019	36.26	36.71	36.26	36.71
5690	NASDAQ	ARTNA	Wed, Jul 3, 2019	36.37	36.81	36.37	36.52
5689	NASDAQ	ARTNA	Tue, Jul 2, 2019	36.30	36.49	36.20	36.47
5688	NASDAQ	ARTNA	Mon, Jul 1, 2019	37.10	37.10	36.21	36.21
5687	NASDAQ	ARTNA	Fri, Jun 28, 2019	35.72	37.24	35.72	37.17
5686	NASDAQ	ARTNA	Thu, Jun 27, 2019	34.81	35.90	34.81	35.90
5685	NASDAQ	ARTNA	Wed, Jun 26, 2019	36.18	36.30	35.35	35.36
5684	NASDAQ	ARTNA	Tue, Jun 25, 2019	36.06	36.37	35.59	36.29
5683	NASDAQ	ARTNA	Mon, Jun 24, 2019	36.59	36.59	35.85	35.96
5682	NASDAQ	ARTNA	Fri, Jun 21, 2019	36.71	37.05	35.29	36.49
5681	NASDAQ	ARTNA	Thu, Jun 20, 2019	37.30	37.75	36.53	36.93
5680	NASDAQ	ARTNA	Wed, Jun 19, 2019	36.87	37.40	36.65	37.16
5679	NASDAQ	ARTNA	Tue, Jun 18, 2019	37.32	37.44	36.48	36.91
5678	NASDAQ	ARTNA	Mon, Jun 17, 2019	37.25	37.25	36.43	37.24
5677	NASDAQ	ARTNA	Fri, Jun 14, 2019	37.92	38.15	37.07	37.21
5676	NASDAQ	ARTNA	Thu, Jun 13, 2019	37.95	38.11	37.59	37.89
5675	NASDAQ	ARTNA	Wed, Jun 12, 2019	37.99	38.37	37.82	38.25
5674	NASDAQ	ARTNA	Tue, Jun 11, 2019	37.95	38.43	37.39	38.03
5673	NASDAQ	ARTNA	Mon, Jun 10, 2019	37.81	37.99	37.45	37.87
5672	NASDAQ	ARTNA	Fri, Jun 7, 2019	37.40	38.50	37.24	38.00
5671	NASDAQ	ARTNA	Thu, Jun 6, 2019	36.40	37.42	36.40	36.71
5670	NASDAQ	ARTNA	Wed, Jun 5, 2019	35.84	36.32	35.84	36.28
5669	NASDAQ	ARTNA	Tue, Jun 4, 2019	35.92	35.92	35.13	35.92
5668	NASDAQ	ARTNA	Mon, Jun 3, 2019	35.77	36.47	35.28	35.79
5667	NASDAQ	ARTNA	Fri, May 31, 2019	36.00	36.41	35.61	35.61
5666	NASDAQ	ARTNA	Thu, May 30, 2019	36.09	36.38	36.00	36.18
5665	NASDAQ	ARTNA	Wed, May 29, 2019	36.02	36.78	36.02	36.06
5664	NASDAQ	ARTNA	Tue, May 28, 2019	36.14	36.50	36.09	36.09
5663	NASDAQ	ARTNA	Fri, May 24, 2019	37.00	37.35	36.80	36.90
5662	NASDAQ	ARTNA	Thu, May 23, 2019	37.43	37.61	36.84	36.84
5661	NASDAQ	ARTNA	Wed, May 22, 2019	37.00	37.74	36.84	37.44
5660	NASDAQ	ARTNA	Tue, May 21, 2019	36.24	37.37	36.10	37.05
5659	NASDAQ	ARTNA	Mon, May 20, 2019	36.33	36.70	35.74	36.15
5658	NASDAQ	ARTNA	Fri, May 17, 2019	35.67	36.50	35.54	36.50
5657	NASDAQ	ARTNA	Thu, May 16, 2019	35.74	35.98	35.51	35.81
5656	NASDAQ	ARTNA	Wed, May 15, 2019	35.32	35.84	35.32	35.82
5655	NASDAQ	ARTNA	Tue, May 14, 2019	35.44	35.74	35.10	35.52
5654	NASDAQ	ARTNA	Mon, May 13, 2019	34.63	35.83	34.63	35.35
5653	NASDAQ	ARTNA	Fri, May 10, 2019	36.20	36.56	36.06	36.06
5652	NASDAQ	ARTNA	Thu, May 9, 2019	36.71	36.71	36.10	36.30
5651	NASDAQ	ARTNA	Wed, May 8, 2019	36.05	36.29	36.05	36.11
5650	NASDAQ	ARTNA	Tue, May 7, 2019	36.74	36.84	36.05	36.06
5649	NASDAQ	ARTNA	Mon, May 6, 2019	36.01	37.27	36.01	36.86
5648	NASDAQ	ARTNA	Fri, May 3, 2019	36.02	36.72	35.83	36.02
5647	NASDAQ	ARTNA	Thu, May 2, 2019	37.55	37.55	35.79	35.89
5646	NASDAQ	ARTNA	Wed, May 1, 2019	35.81	36.68	35.50	36.41
5645	NASDAQ	ARTNA	Tue, Apr 30, 2019	36.35	36.43	36.14	36.28
5644	NASDAQ	ARTNA	Mon, Apr 29, 2019	37.43	38.18	35.64	36.43
5643	NASDAQ	ARTNA	Fri, Apr 26, 2019	34.95	35.48	34.66	35.04
5642	NASDAQ	ARTNA	Thu, Apr 25, 2019	35.08	35.21	34.40	34.65
5641	NASDAQ	ARTNA	Wed, Apr 24, 2019	35.09	35.31	34.44	35.05
5640	NASDAQ	ARTNA	Tue, Apr 23, 2019	34.59	35.36	34.32	35.35
5639	NASDAQ	ARTNA	Mon, Apr 22, 2019	35.36	35.36	34.43	34.50
5638	NASDAQ	ARTNA	Thu, Apr 18, 2019	34.52	35.49	34.52	35.31
5637	NASDAQ	ARTNA	Wed, Apr 17, 2019	35.64	35.64	34.51	34.63
5636	NASDAQ	ARTNA	Tue, Apr 16, 2019	36.61	36.61	35.51	35.62
5635	NASDAQ	ARTNA	Mon, Apr 15, 2019	36.11	36.92	36.11	36.38
5634	NASDAQ	ARTNA	Fri, Apr 12, 2019	36.32	36.52	36.10	36.10
5633	NASDAQ	ARTNA	Thu, Apr 11, 2019	36.31	37.98	36.30	36.30
5632	NASDAQ	ARTNA	Wed, Apr 10, 2019	36.18	36.60	36.15	36.27
5631	NASDAQ	ARTNA	Tue, Apr 9, 2019	36.52	37.06	36.02	36.27
5630	NASDAQ	ARTNA	Mon, Apr 8, 2019	37.06	37.25	36.34	36.34
5629	NASDAQ	ARTNA	Fri, Apr 5, 2019	35.97	37.40	35.97	37.16
5628	NASDAQ	ARTNA	Thu, Apr 4, 2019	35.73	36.16	35.49	36.14
5627	NASDAQ	ARTNA	Wed, Apr 3, 2019	35.90	35.98	35.30	35.66
5626	NASDAQ	ARTNA	Tue, Apr 2, 2019	36.30	36.30	35.72	35.94
5625	NASDAQ	ARTNA	Mon, Apr 1, 2019	37.31	37.31	36.19	36.19
5624	NASDAQ	ARTNA	Fri, Mar 29, 2019	37.98	37.98	37.06	37.27
5623	NASDAQ	ARTNA	Thu, Mar 28, 2019	37.50	37.57	37.08	37.20
5622	NASDAQ	ARTNA	Wed, Mar 27, 2019	37.62	37.89	37.11	37.38
5621	NASDAQ	ARTNA	Tue, Mar 26, 2019	37.89	38.20	37.46	37.80
5620	NASDAQ	ARTNA	Mon, Mar 25, 2019	37.90	37.90	36.81	37.70
5619	NASDAQ	ARTNA	Fri, Mar 22, 2019	38.97	39.20	37.87	37.87
5618	NASDAQ	ARTNA	Thu, Mar 21, 2019	38.98	39.39	38.60	38.95
5617	NASDAQ	ARTNA	Wed, Mar 20, 2019	38.78	39.41	37.98	39.06
5616	NASDAQ	ARTNA	Tue, Mar 19, 2019	38.80	39.65	38.63	38.77
5615	NASDAQ	ARTNA	Mon, Mar 18, 2019	40.26	40.40	38.69	38.78
5614	NASDAQ	ARTNA	Fri, Mar 15, 2019	40.03	40.30	39.74	40.28
5613	NASDAQ	ARTNA	Thu, Mar 14, 2019	39.66	40.15	39.50	40.00
5612	NASDAQ	ARTNA	Wed, Mar 13, 2019	39.65	40.08	39.23	39.90
5611	NASDAQ	ARTNA	Tue, Mar 12, 2019	39.42	39.65	39.29	39.54
5610	NASDAQ	ARTNA	Mon, Mar 11, 2019	39.09	39.69	38.23	39.44
5609	NASDAQ	ARTNA	Fri, Mar 8, 2019	38.50	39.73	37.98	38.46
5608	NASDAQ	ARTNA	Thu, Mar 7, 2019	38.60	38.85	38.30	38.50
5607	NASDAQ	ARTNA	Wed, Mar 6, 2019	38.98	39.46	38.46	38.48
5606	NASDAQ	ARTNA	Tue, Mar 5, 2019	39.03	39.31	38.89	39.00
5605	NASDAQ	ARTNA	Mon, Mar 4, 2019	39.26	39.30	38.84	39.01
5604	NASDAQ	ARTNA	Fri, Mar 1, 2019	38.72	39.48	38.72	39.28
5603	NASDAQ	ARTNA	Thu, Feb 28, 2019	39.23	39.43	38.92	39.24
5602	NASDAQ	ARTNA	Wed, Feb 27, 2019	38.83	39.88	38.83	39.15
5601	NASDAQ	ARTNA	Tue, Feb 26, 2019	39.04	39.28	38.28	38.98
5600	NASDAQ	ARTNA	Mon, Feb 25, 2019	40.03	40.13	39.00	39.00
5599	NASDAQ	ARTNA	Fri, Feb 22, 2019	39.83	40.87	39.05	40.18
5598	NASDAQ	ARTNA	Thu, Feb 21, 2019	39.52	39.82	38.68	39.82
5597	NASDAQ	ARTNA	Wed, Feb 20, 2019	39.05	40.97	39.05	39.31
5596	NASDAQ	ARTNA	Tue, Feb 19, 2019	38.42	39.06	37.94	39.06
5595	NASDAQ	ARTNA	Fri, Feb 15, 2019	38.01	38.82	38.01	38.82
5594	NASDAQ	ARTNA	Thu, Feb 14, 2019	37.77	38.06	37.58	37.91
5593	NASDAQ	ARTNA	Wed, Feb 13, 2019	37.22	37.83	37.15	37.64
5592	NASDAQ	ARTNA	Tue, Feb 12, 2019	36.92	38.08	36.92	36.96
5591	NASDAQ	ARTNA	Mon, Feb 11, 2019	37.94	38.06	36.85	36.93
5590	NASDAQ	ARTNA	Fri, Feb 8, 2019	36.06	38.22	36.06	38.16
5589	NASDAQ	ARTNA	Thu, Feb 7, 2019	35.43	36.57	35.43	36.32
5588	NASDAQ	ARTNA	Wed, Feb 6, 2019	36.07	36.25	36.00	36.19
5587	NASDAQ	ARTNA	Tue, Feb 5, 2019	35.71	36.40	35.71	36.06
5586	NASDAQ	ARTNA	Mon, Feb 4, 2019	35.35	35.68	35.35	35.62
5585	NASDAQ	ARTNA	Fri, Feb 1, 2019	35.43	35.74	35.00	35.70
5584	NASDAQ	ARTNA	Thu, Jan 31, 2019	34.36	35.57	34.36	35.39
5583	NASDAQ	ARTNA	Wed, Jan 30, 2019	34.26	34.63	34.26	34.54
5582	NASDAQ	ARTNA	Tue, Jan 29, 2019	34.58	34.80	34.27	34.41
5581	NASDAQ	ARTNA	Mon, Jan 28, 2019	34.99	35.00	34.59	34.66
5580	NASDAQ	ARTNA	Fri, Jan 25, 2019	35.70	35.83	34.91	35.03
5579	NASDAQ	ARTNA	Thu, Jan 24, 2019	35.64	35.90	35.15	35.74
5578	NASDAQ	ARTNA	Wed, Jan 23, 2019	34.19	35.52	34.19	35.51
5577	NASDAQ	ARTNA	Tue, Jan 22, 2019	34.61	35.12	33.91	34.10
5576	NASDAQ	ARTNA	Fri, Jan 18, 2019	34.13	34.88	34.13	34.70
5575	NASDAQ	ARTNA	Thu, Jan 17, 2019	34.26	35.03	34.16	34.17
5574	NASDAQ	ARTNA	Wed, Jan 16, 2019	34.79	35.11	34.31	34.31
5573	NASDAQ	ARTNA	Tue, Jan 15, 2019	33.94	34.83	33.75	34.78
5572	NASDAQ	ARTNA	Mon, Jan 14, 2019	34.25	34.25	33.70	33.70
5571	NASDAQ	ARTNA	Fri, Jan 11, 2019	34.11	34.17	33.72	34.17
5570	NASDAQ	ARTNA	Thu, Jan 10, 2019	33.45	34.10	33.45	34.08
5569	NASDAQ	ARTNA	Wed, Jan 9, 2019	33.58	33.95	33.48	33.67
5568	NASDAQ	ARTNA	Tue, Jan 8, 2019	34.01	34.06	33.53	33.72
5567	NASDAQ	ARTNA	Mon, Jan 7, 2019	34.19	34.54	33.45	33.71
5566	NASDAQ	ARTNA	Fri, Jan 4, 2019	34.38	35.08	33.96	34.18
5565	NASDAQ	ARTNA	Thu, Jan 3, 2019	34.35	35.28	33.94	34.09
5564	NASDAQ	ARTNA	Wed, Jan 2, 2019	34.71	35.30	33.14	34.50
5563	NASDAQ	ARTNA	Mon, Dec 31, 2018	34.80	35.85	34.74	34.87
5562	NASDAQ	ARTNA	Fri, Dec 28, 2018	34.72	35.60	33.21	34.79
5561	NASDAQ	ARTNA	Thu, Dec 27, 2018	33.23	36.11	33.05	34.76
5560	NASDAQ	ARTNA	Wed, Dec 26, 2018	33.20	33.86	32.84	33.64
5559	NASDAQ	ARTNA	Mon, Dec 24, 2018	34.06	34.17	32.84	32.84
5558	NASDAQ	ARTNA	Fri, Dec 21, 2018	34.64	34.64	34.03	34.03
5557	NASDAQ	ARTNA	Thu, Dec 20, 2018	34.44	35.00	34.04	34.66
5556	NASDAQ	ARTNA	Wed, Dec 19, 2018	35.46	35.47	34.49	34.63
5555	NASDAQ	ARTNA	Tue, Dec 18, 2018	36.13	36.59	35.35	35.47
5554	NASDAQ	ARTNA	Mon, Dec 17, 2018	37.57	37.57	36.12	36.12
5553	NASDAQ	ARTNA	Fri, Dec 14, 2018	37.00	37.67	37.00	37.46
5552	NASDAQ	ARTNA	Thu, Dec 13, 2018	37.29	37.96	37.04	37.12
5551	NASDAQ	ARTNA	Wed, Dec 12, 2018	37.60	37.67	37.22	37.58
5550	NASDAQ	ARTNA	Tue, Dec 11, 2018	37.74	37.74	37.09	37.57
5549	NASDAQ	ARTNA	Mon, Dec 10, 2018	37.62	37.62	37.01	37.55
5548	NASDAQ	ARTNA	Fri, Dec 7, 2018	37.57	37.57	36.71	37.49
5547	NASDAQ	ARTNA	Thu, Dec 6, 2018	35.59	37.52	35.59	37.39
5546	NASDAQ	ARTNA	Tue, Dec 4, 2018	35.36	36.26	35.17	35.73
5545	NASDAQ	ARTNA	Mon, Dec 3, 2018	36.60	36.66	35.41	35.64
5544	NASDAQ	ARTNA	Fri, Nov 30, 2018	36.25	36.89	36.20	36.36
5543	NASDAQ	ARTNA	Thu, Nov 29, 2018	36.36	36.42	35.87	36.19
5542	NASDAQ	ARTNA	Wed, Nov 28, 2018	35.91	36.69	35.69	36.36
5541	NASDAQ	ARTNA	Tue, Nov 27, 2018	35.61	35.94	35.41	35.78
5540	NASDAQ	ARTNA	Mon, Nov 26, 2018	36.03	36.03	35.42	35.85
5539	NASDAQ	ARTNA	Fri, Nov 23, 2018	35.95	35.98	34.81	35.97
5538	NASDAQ	ARTNA	Wed, Nov 21, 2018	35.58	36.09	34.92	36.09
5537	NASDAQ	ARTNA	Tue, Nov 20, 2018	35.82	36.25	35.30	35.58
5536	NASDAQ	ARTNA	Mon, Nov 19, 2018	36.16	36.97	35.98	35.98
5535	NASDAQ	ARTNA	Fri, Nov 16, 2018	36.76	36.76	36.13	36.14
5534	NASDAQ	ARTNA	Thu, Nov 15, 2018	36.28	36.82	36.05	36.80
5533	NASDAQ	ARTNA	Wed, Nov 14, 2018	36.74	36.81	36.08	36.29
5532	NASDAQ	ARTNA	Tue, Nov 13, 2018	36.67	36.81	36.02	36.68
5531	NASDAQ	ARTNA	Mon, Nov 12, 2018	36.43	37.24	36.24	36.84
5530	NASDAQ	ARTNA	Fri, Nov 9, 2018	37.07	37.47	36.50	36.50
5529	NASDAQ	ARTNA	Thu, Nov 8, 2018	37.57	37.98	37.26	37.26
5528	NASDAQ	ARTNA	Wed, Nov 7, 2018	38.10	38.75	37.60	38.05
5527	NASDAQ	ARTNA	Tue, Nov 6, 2018	37.20	38.34	36.99	38.00
5526	NASDAQ	ARTNA	Mon, Nov 5, 2018	37.83	37.90	37.18	37.28
5525	NASDAQ	ARTNA	Fri, Nov 2, 2018	37.37	37.98	37.02	37.75
5524	NASDAQ	ARTNA	Thu, Nov 1, 2018	36.69	37.37	36.41	37.22
5523	NASDAQ	ARTNA	Wed, Oct 31, 2018	37.89	37.89	36.44	36.59
5522	NASDAQ	ARTNA	Tue, Oct 30, 2018	36.51	37.80	35.87	37.80
5521	NASDAQ	ARTNA	Mon, Oct 29, 2018	36.42	36.68	35.60	36.53
5520	NASDAQ	ARTNA	Fri, Oct 26, 2018	36.30	36.47	35.97	36.20
5519	NASDAQ	ARTNA	Thu, Oct 25, 2018	36.31	36.45	35.57	36.44
5518	NASDAQ	ARTNA	Wed, Oct 24, 2018	36.00	36.37	35.87	36.23
5517	NASDAQ	ARTNA	Tue, Oct 23, 2018	35.50	36.19	35.30	36.00
5516	NASDAQ	ARTNA	Mon, Oct 22, 2018	35.34	36.46	35.23	35.71
5515	NASDAQ	ARTNA	Fri, Oct 19, 2018	35.81	36.40	35.16	35.78
5514	NASDAQ	ARTNA	Thu, Oct 18, 2018	35.86	36.24	35.26	35.96
5513	NASDAQ	ARTNA	Wed, Oct 17, 2018	36.31	36.40	36.04	36.04
5512	NASDAQ	ARTNA	Tue, Oct 16, 2018	35.91	36.54	35.20	36.54
5511	NASDAQ	ARTNA	Mon, Oct 15, 2018	34.73	35.97	34.73	35.74
5510	NASDAQ	ARTNA	Fri, Oct 12, 2018	36.00	36.67	35.30	35.48
5509	NASDAQ	ARTNA	Thu, Oct 11, 2018	35.69	35.96	35.08	35.76
5508	NASDAQ	ARTNA	Wed, Oct 10, 2018	35.80	36.14	35.52	35.90
5507	NASDAQ	ARTNA	Tue, Oct 9, 2018	35.48	36.53	35.48	35.81
5506	NASDAQ	ARTNA	Mon, Oct 8, 2018	33.59	35.95	33.51	35.65
5505	NASDAQ	ARTNA	Fri, Oct 5, 2018	33.48	33.68	32.27	32.92
5504	NASDAQ	ARTNA	Thu, Oct 4, 2018	34.97	35.65	33.35	33.59
5503	NASDAQ	ARTNA	Wed, Oct 3, 2018	35.04	35.80	35.00	35.11
5502	NASDAQ	ARTNA	Tue, Oct 2, 2018	35.77	35.77	34.64	34.90
5501	NASDAQ	ARTNA	Mon, Oct 1, 2018	36.83	36.83	35.98	36.03
5500	NASDAQ	ARTNA	Fri, Sep 28, 2018	36.37	36.79	36.15	36.78
5499	NASDAQ	ARTNA	Thu, Sep 27, 2018	35.80	36.75	35.78	36.50
5498	NASDAQ	ARTNA	Wed, Sep 26, 2018	36.44	36.44	35.61	35.61
5497	NASDAQ	ARTNA	Tue, Sep 25, 2018	36.00	36.65	35.85	36.46
5496	NASDAQ	ARTNA	Mon, Sep 24, 2018	36.30	36.50	35.67	35.88
5495	NASDAQ	ARTNA	Fri, Sep 21, 2018	35.49	36.50	35.00	36.50
5494	NASDAQ	ARTNA	Thu, Sep 20, 2018	35.31	35.84	34.75	35.78
5493	NASDAQ	ARTNA	Wed, Sep 19, 2018	35.92	36.50	34.43	35.18
5492	NASDAQ	ARTNA	Tue, Sep 18, 2018	36.29	36.93	35.95	35.95
5491	NASDAQ	ARTNA	Mon, Sep 17, 2018	36.16	36.79	36.16	36.51
5490	NASDAQ	ARTNA	Fri, Sep 14, 2018	36.33	36.93	36.06	36.37
5489	NASDAQ	ARTNA	Thu, Sep 13, 2018	36.14	37.00	35.92	36.36
5488	NASDAQ	ARTNA	Wed, Sep 12, 2018	36.12	36.60	36.06	36.20
5487	NASDAQ	ARTNA	Tue, Sep 11, 2018	36.00	36.55	36.00	36.05
5486	NASDAQ	ARTNA	Mon, Sep 10, 2018	37.21	37.32	36.01	36.07
5485	NASDAQ	ARTNA	Fri, Sep 7, 2018	37.44	37.66	37.22	37.42
5484	NASDAQ	ARTNA	Thu, Sep 6, 2018	37.00	37.73	36.60	37.55
5483	NASDAQ	ARTNA	Wed, Sep 5, 2018	36.33	37.10	36.33	37.06
5482	NASDAQ	ARTNA	Tue, Sep 4, 2018	36.34	36.50	35.90	36.34
5481	NASDAQ	ARTNA	Fri, Aug 31, 2018	35.78	36.26	35.78	35.93
5480	NASDAQ	ARTNA	Thu, Aug 30, 2018	36.15	36.48	35.95	35.95
5479	NASDAQ	ARTNA	Wed, Aug 29, 2018	36.11	36.55	36.11	36.29
5478	NASDAQ	ARTNA	Tue, Aug 28, 2018	36.45	36.50	36.02	36.07
5477	NASDAQ	ARTNA	Mon, Aug 27, 2018	38.21	38.70	36.22	36.31
5476	NASDAQ	ARTNA	Fri, Aug 24, 2018	38.54	38.63	38.00	38.12
5475	NASDAQ	ARTNA	Thu, Aug 23, 2018	38.41	38.73	37.74	38.40
5474	NASDAQ	ARTNA	Wed, Aug 22, 2018	38.40	38.76	38.21	38.50
5473	NASDAQ	ARTNA	Tue, Aug 21, 2018	38.22	38.73	38.12	38.61
5472	NASDAQ	ARTNA	Mon, Aug 20, 2018	38.00	38.35	37.85	38.18
5471	NASDAQ	ARTNA	Fri, Aug 17, 2018	36.73	38.12	36.73	38.12
5470	NASDAQ	ARTNA	Thu, Aug 16, 2018	36.56	36.95	35.84	36.89
5469	NASDAQ	ARTNA	Wed, Aug 15, 2018	37.25	37.27	36.54	36.54
5468	NASDAQ	ARTNA	Tue, Aug 14, 2018	35.70	37.35	35.37	37.09
5467	NASDAQ	ARTNA	Mon, Aug 13, 2018	36.12	36.60	35.61	35.70
5466	NASDAQ	ARTNA	Fri, Aug 10, 2018	36.93	37.08	36.54	36.56
5465	NASDAQ	ARTNA	Thu, Aug 9, 2018	36.86	37.35	36.63	37.26
5464	NASDAQ	ARTNA	Wed, Aug 8, 2018	36.39	37.18	36.39	36.99
5463	NASDAQ	ARTNA	Tue, Aug 7, 2018	36.92	37.01	36.54	36.81
5462	NASDAQ	ARTNA	Mon, Aug 6, 2018	36.00	37.27	36.00	36.85
5461	NASDAQ	ARTNA	Fri, Aug 3, 2018	36.89	37.27	35.50	35.53
5460	NASDAQ	ARTNA	Thu, Aug 2, 2018	35.82	36.72	35.68	36.32
5459	NASDAQ	ARTNA	Wed, Aug 1, 2018	36.83	37.44	35.66	36.00
5458	NASDAQ	ARTNA	Tue, Jul 31, 2018	36.75	37.33	36.41	36.89
5457	NASDAQ	ARTNA	Mon, Jul 30, 2018	37.45	37.56	36.60	36.70
5456	NASDAQ	ARTNA	Fri, Jul 27, 2018	38.41	38.41	37.32	37.46
5455	NASDAQ	ARTNA	Thu, Jul 26, 2018	38.06	38.55	37.78	38.16
5454	NASDAQ	ARTNA	Wed, Jul 25, 2018	37.72	38.37	35.70	37.61
5453	NASDAQ	ARTNA	Tue, Jul 24, 2018	38.62	38.62	38.09	38.28
5452	NASDAQ	ARTNA	Mon, Jul 23, 2018	38.55	39.85	37.99	38.54
5451	NASDAQ	ARTNA	Fri, Jul 20, 2018	38.42	38.46	37.74	37.98
5450	NASDAQ	ARTNA	Thu, Jul 19, 2018	37.98	38.77	37.98	38.34
5449	NASDAQ	ARTNA	Wed, Jul 18, 2018	38.43	38.65	37.97	38.20
5448	NASDAQ	ARTNA	Tue, Jul 17, 2018	38.68	39.24	38.22	38.46
5447	NASDAQ	ARTNA	Mon, Jul 16, 2018	38.05	38.85	38.05	38.66
5446	NASDAQ	ARTNA	Fri, Jul 13, 2018	39.11	39.81	37.77	37.98
5445	NASDAQ	ARTNA	Thu, Jul 12, 2018	39.30	39.69	39.10	39.10
5444	NASDAQ	ARTNA	Wed, Jul 11, 2018	38.91	39.43	38.48	39.28
5443	NASDAQ	ARTNA	Tue, Jul 10, 2018	38.72	39.20	38.72	38.83
5442	NASDAQ	ARTNA	Mon, Jul 9, 2018	40.07	40.10	38.79	38.83
5441	NASDAQ	ARTNA	Fri, Jul 6, 2018	39.06	40.17	39.06	39.95
5440	NASDAQ	ARTNA	Thu, Jul 5, 2018	38.08	39.26	38.08	39.02
5439	NASDAQ	ARTNA	Tue, Jul 3, 2018	38.65	38.65	38.29	38.46
5438	NASDAQ	ARTNA	Mon, Jul 2, 2018	38.60	38.98	38.21	38.63
5437	NASDAQ	ARTNA	Fri, Jun 29, 2018	39.31	39.31	38.34	38.77
5436	NASDAQ	ARTNA	Thu, Jun 28, 2018	38.85	39.53	38.85	39.19
5435	NASDAQ	ARTNA	Wed, Jun 27, 2018	39.65	39.65	38.68	38.97
5434	NASDAQ	ARTNA	Tue, Jun 26, 2018	38.89	40.00	38.52	39.58
5433	NASDAQ	ARTNA	Mon, Jun 25, 2018	38.96	39.59	37.57	38.95
5432	NASDAQ	ARTNA	Fri, Jun 22, 2018	38.95	39.70	36.98	39.15
5431	NASDAQ	ARTNA	Thu, Jun 21, 2018	37.81	39.22	37.55	38.95
5430	NASDAQ	ARTNA	Wed, Jun 20, 2018	37.83	39.15	37.51	38.28
5429	NASDAQ	ARTNA	Tue, Jun 19, 2018	37.24	38.61	37.24	38.39
5428	NASDAQ	ARTNA	Mon, Jun 18, 2018	36.00	37.57	36.00	37.51
5427	NASDAQ	ARTNA	Fri, Jun 15, 2018	37.21	38.31	35.77	36.04
5426	NASDAQ	ARTNA	Thu, Jun 14, 2018	37.44	37.87	36.93	37.37
5425	NASDAQ	ARTNA	Wed, Jun 13, 2018	37.80	38.01	37.29	37.31
5424	NASDAQ	ARTNA	Tue, Jun 12, 2018	37.38	38.10	37.38	37.76
5423	NASDAQ	ARTNA	Mon, Jun 11, 2018	38.64	38.64	36.91	37.46
5422	NASDAQ	ARTNA	Fri, Jun 8, 2018	38.80	39.24	38.63	38.63
5421	NASDAQ	ARTNA	Thu, Jun 7, 2018	39.01	39.38	38.72	38.79
5420	NASDAQ	ARTNA	Wed, Jun 6, 2018	39.47	39.66	38.70	38.97
5419	NASDAQ	ARTNA	Tue, Jun 5, 2018	39.05	39.68	38.65	38.74
5418	NASDAQ	ARTNA	Mon, Jun 4, 2018	39.37	39.73	38.73	39.50
5417	NASDAQ	ARTNA	Fri, Jun 1, 2018	39.50	39.56	38.57	39.32
5416	NASDAQ	ARTNA	Thu, May 31, 2018	39.86	39.89	38.39	39.00
5415	NASDAQ	ARTNA	Wed, May 30, 2018	38.74	39.96	38.69	39.72
5414	NASDAQ	ARTNA	Tue, May 29, 2018	38.47	38.99	37.56	38.73
5413	NASDAQ	ARTNA	Fri, May 25, 2018	38.71	38.90	37.55	38.58
5412	NASDAQ	ARTNA	Thu, May 24, 2018	38.09	38.73	37.02	38.43
5411	NASDAQ	ARTNA	Wed, May 23, 2018	36.59	38.26	36.59	38.18
5410	NASDAQ	ARTNA	Tue, May 22, 2018	37.42	37.42	36.57	36.60
5409	NASDAQ	ARTNA	Mon, May 21, 2018	36.95	37.27	36.52	37.07
5408	NASDAQ	ARTNA	Fri, May 18, 2018	37.07	37.49	36.61	36.74
5407	NASDAQ	ARTNA	Thu, May 17, 2018	36.58	36.95	36.52	36.81
5406	NASDAQ	ARTNA	Wed, May 16, 2018	37.12	37.12	36.33	36.59
5405	NASDAQ	ARTNA	Tue, May 15, 2018	38.09	38.10	36.76	37.16
5404	NASDAQ	ARTNA	Mon, May 14, 2018	39.20	39.20	38.24	38.24
5403	NASDAQ	ARTNA	Fri, May 11, 2018	38.74	39.06	38.40	39.06
5402	NASDAQ	ARTNA	Thu, May 10, 2018	39.08	39.23	38.54	38.94
5401	NASDAQ	ARTNA	Wed, May 9, 2018	39.14	39.34	38.59	38.94
5400	NASDAQ	ARTNA	Tue, May 8, 2018	39.02	39.38	38.37	39.11
5399	NASDAQ	ARTNA	Mon, May 7, 2018	38.51	39.49	37.54	39.12
5398	NASDAQ	ARTNA	Fri, May 4, 2018	38.35	38.77	37.80	38.52
5397	NASDAQ	ARTNA	Thu, May 3, 2018	38.66	38.66	37.47	38.38
5396	NASDAQ	ARTNA	Wed, May 2, 2018	38.78	38.78	38.02	38.51
5395	NASDAQ	ARTNA	Tue, May 1, 2018	38.09	38.88	37.72	38.88
5394	NASDAQ	ARTNA	Mon, Apr 30, 2018	37.80	38.46	37.55	38.30
5393	NASDAQ	ARTNA	Fri, Apr 27, 2018	38.85	38.88	38.12	38.41
5392	NASDAQ	ARTNA	Thu, Apr 26, 2018	37.64	38.87	36.85	38.74
5391	NASDAQ	ARTNA	Wed, Apr 25, 2018	37.08	37.74	36.50	37.48
5390	NASDAQ	ARTNA	Tue, Apr 24, 2018	37.08	37.45	36.67	37.16
5389	NASDAQ	ARTNA	Mon, Apr 23, 2018	37.82	37.82	37.05	37.20
5388	NASDAQ	ARTNA	Fri, Apr 20, 2018	36.81	37.99	36.80	37.75
5387	NASDAQ	ARTNA	Thu, Apr 19, 2018	37.20	37.61	36.61	37.09
5386	NASDAQ	ARTNA	Wed, Apr 18, 2018	37.41	37.99	37.20	37.21
5385	NASDAQ	ARTNA	Tue, Apr 17, 2018	37.25	37.56	36.27	37.47
5384	NASDAQ	ARTNA	Mon, Apr 16, 2018	36.38	37.17	36.38	37.00
5383	NASDAQ	ARTNA	Fri, Apr 13, 2018	36.74	36.74	35.67	36.17
5382	NASDAQ	ARTNA	Thu, Apr 12, 2018	37.75	37.75	36.35	36.73
5381	NASDAQ	ARTNA	Wed, Apr 11, 2018	36.45	37.54	36.27	37.31
5380	NASDAQ	ARTNA	Tue, Apr 10, 2018	36.65	36.94	36.05	36.64
5379	NASDAQ	ARTNA	Mon, Apr 9, 2018	36.62	36.79	36.28	36.45
5378	NASDAQ	ARTNA	Fri, Apr 6, 2018	36.65	37.08	36.24	36.62
5377	NASDAQ	ARTNA	Thu, Apr 5, 2018	36.23	37.08	36.23	36.75
5376	NASDAQ	ARTNA	Wed, Apr 4, 2018	35.50	36.23	35.50	36.09
5375	NASDAQ	ARTNA	Tue, Apr 3, 2018	35.39	36.28	35.34	35.87
5374	NASDAQ	ARTNA	Mon, Apr 2, 2018	36.39	36.39	34.78	35.30
5373	NASDAQ	ARTNA	Thu, Mar 29, 2018	36.37	37.16	36.37	36.48
5372	NASDAQ	ARTNA	Wed, Mar 28, 2018	36.15	36.77	36.15	36.38
5371	NASDAQ	ARTNA	Tue, Mar 27, 2018	36.45	36.69	36.07	36.20
5370	NASDAQ	ARTNA	Mon, Mar 26, 2018	36.25	36.65	35.44	36.46
5369	NASDAQ	ARTNA	Fri, Mar 23, 2018	37.03	38.00	35.74	35.81
5368	NASDAQ	ARTNA	Thu, Mar 22, 2018	36.45	37.60	36.45	37.02
5367	NASDAQ	ARTNA	Wed, Mar 21, 2018	36.66	37.61	36.45	36.78
5366	NASDAQ	ARTNA	Tue, Mar 20, 2018	37.30	37.80	36.46	36.77
5365	NASDAQ	ARTNA	Mon, Mar 19, 2018	36.67	37.60	36.24	37.31
5364	NASDAQ	ARTNA	Fri, Mar 16, 2018	36.39	37.32	35.67	37.03
5363	NASDAQ	ARTNA	Thu, Mar 15, 2018	35.33	36.74	34.50	36.58
5362	NASDAQ	ARTNA	Wed, Mar 14, 2018	35.39	35.41	34.29	35.00
5361	NASDAQ	ARTNA	Tue, Mar 13, 2018	35.46	35.46	34.12	35.12
5360	NASDAQ	ARTNA	Mon, Mar 12, 2018	34.69	35.85	34.20	35.51
5359	NASDAQ	ARTNA	Fri, Mar 9, 2018	34.47	34.75	32.94	34.74
5358	NASDAQ	ARTNA	Thu, Mar 8, 2018	34.00	34.74	33.47	34.34
5357	NASDAQ	ARTNA	Wed, Mar 7, 2018	32.35	34.99	32.00	34.51
5356	NASDAQ	ARTNA	Tue, Mar 6, 2018	32.93	33.09	32.03	32.51
5355	NASDAQ	ARTNA	Mon, Mar 5, 2018	32.91	33.55	32.76	32.90
5354	NASDAQ	ARTNA	Fri, Mar 2, 2018	32.82	33.39	32.79	33.06
5353	NASDAQ	ARTNA	Thu, Mar 1, 2018	33.09	33.57	32.51	33.00
5352	NASDAQ	ARTNA	Wed, Feb 28, 2018	34.55	34.57	32.92	33.09
5351	NASDAQ	ARTNA	Tue, Feb 27, 2018	34.87	35.40	34.51	34.52
5350	NASDAQ	ARTNA	Mon, Feb 26, 2018	34.83	34.93	34.61	34.89
5349	NASDAQ	ARTNA	Fri, Feb 23, 2018	34.41	35.39	34.41	34.75
5348	NASDAQ	ARTNA	Thu, Feb 22, 2018	34.62	34.62	33.81	34.19
5347	NASDAQ	ARTNA	Wed, Feb 21, 2018	33.99	35.49	33.99	34.65
5346	NASDAQ	ARTNA	Tue, Feb 20, 2018	34.71	35.40	33.77	33.86
5345	NASDAQ	ARTNA	Fri, Feb 16, 2018	34.58	36.07	34.58	35.08
5344	NASDAQ	ARTNA	Thu, Feb 15, 2018	34.25	35.21	33.94	34.92
5343	NASDAQ	ARTNA	Wed, Feb 14, 2018	34.09	34.93	33.94	34.15
5342	NASDAQ	ARTNA	Tue, Feb 13, 2018	34.23	34.59	33.97	34.38
5341	NASDAQ	ARTNA	Mon, Feb 12, 2018	35.11	35.11	33.86	34.45
5340	NASDAQ	ARTNA	Fri, Feb 9, 2018	34.02	35.81	34.02	35.05
5339	NASDAQ	ARTNA	Thu, Feb 8, 2018	34.73	34.73	33.75	33.75
5338	NASDAQ	ARTNA	Wed, Feb 7, 2018	34.56	35.91	34.46	34.86
5337	NASDAQ	ARTNA	Tue, Feb 6, 2018	34.85	35.25	33.57	34.88
5336	NASDAQ	ARTNA	Mon, Feb 5, 2018	36.01	37.18	34.60	34.87
5335	NASDAQ	ARTNA	Fri, Feb 2, 2018	36.41	36.81	36.10	36.17
5334	NASDAQ	ARTNA	Thu, Feb 1, 2018	37.17	37.58	36.50	36.67
5333	NASDAQ	ARTNA	Wed, Jan 31, 2018	37.13	37.52	36.81	37.18
5332	NASDAQ	ARTNA	Tue, Jan 30, 2018	37.77	37.82	37.14	37.14
5331	NASDAQ	ARTNA	Mon, Jan 29, 2018	37.33	38.61	37.07	37.79
5330	NASDAQ	ARTNA	Fri, Jan 26, 2018	38.00	38.00	36.76	37.53
5329	NASDAQ	ARTNA	Thu, Jan 25, 2018	38.53	38.53	37.53	37.83
5328	NASDAQ	ARTNA	Wed, Jan 24, 2018	38.31	38.87	38.19	38.20
5327	NASDAQ	ARTNA	Tue, Jan 23, 2018	38.70	39.31	38.21	38.29
5326	NASDAQ	ARTNA	Mon, Jan 22, 2018	39.19	39.35	38.50	38.83
5325	NASDAQ	ARTNA	Fri, Jan 19, 2018	37.67	39.20	37.67	39.20
5324	NASDAQ	ARTNA	Thu, Jan 18, 2018	38.07	38.40	37.21	37.39
5323	NASDAQ	ARTNA	Wed, Jan 17, 2018	37.99	38.38	37.42	38.25
5322	NASDAQ	ARTNA	Tue, Jan 16, 2018	38.41	39.25	37.50	37.54
5321	NASDAQ	ARTNA	Fri, Jan 12, 2018	38.66	39.00	38.07	38.40
5320	NASDAQ	ARTNA	Thu, Jan 11, 2018	38.20	39.55	38.00	38.87
5319	NASDAQ	ARTNA	Wed, Jan 10, 2018	39.23	39.40	37.98	38.19
5318	NASDAQ	ARTNA	Tue, Jan 9, 2018	41.77	41.77	37.00	39.24
5317	NASDAQ	ARTNA	Mon, Jan 8, 2018	38.16	41.92	38.00	41.89
5316	NASDAQ	ARTNA	Fri, Jan 5, 2018	38.55	38.55	37.71	38.12
5315	NASDAQ	ARTNA	Thu, Jan 4, 2018	37.85	38.81	37.11	38.51
5314	NASDAQ	ARTNA	Wed, Jan 3, 2018	37.32	38.59	36.79	37.83
5313	NASDAQ	ARTNA	Tue, Jan 2, 2018	38.61	39.31	37.18	37.31
5312	NASDAQ	ARTNA	Fri, Dec 29, 2017	39.04	39.10	38.55	38.56
5311	NASDAQ	ARTNA	Thu, Dec 28, 2017	38.30	39.17	38.17	38.91
5310	NASDAQ	ARTNA	Wed, Dec 27, 2017	38.18	39.10	37.85	38.30
5309	NASDAQ	ARTNA	Tue, Dec 26, 2017	38.80	39.20	38.05	38.14
5308	NASDAQ	ARTNA	Fri, Dec 22, 2017	38.70	38.90	37.74	38.82
5307	NASDAQ	ARTNA	Thu, Dec 21, 2017	37.86	39.13	37.51	38.70
5306	NASDAQ	ARTNA	Wed, Dec 20, 2017	37.73	38.60	36.99	38.01
5305	NASDAQ	ARTNA	Tue, Dec 19, 2017	38.27	38.58	37.40	37.63
5304	NASDAQ	ARTNA	Mon, Dec 18, 2017	39.80	39.92	38.07	38.27
5303	NASDAQ	ARTNA	Fri, Dec 15, 2017	37.88	40.09	37.88	39.46
5302	NASDAQ	ARTNA	Thu, Dec 14, 2017	38.25	38.89	37.72	37.90
5301	NASDAQ	ARTNA	Wed, Dec 13, 2017	37.24	38.61	37.24	38.36
5300	NASDAQ	ARTNA	Tue, Dec 12, 2017	37.82	38.23	37.00	37.14
5299	NASDAQ	ARTNA	Mon, Dec 11, 2017	38.66	38.66	37.38	37.64
5298	NASDAQ	ARTNA	Fri, Dec 8, 2017	39.31	39.33	38.36	38.45
5297	NASDAQ	ARTNA	Thu, Dec 7, 2017	39.69	40.01	39.06	39.10
5296	NASDAQ	ARTNA	Wed, Dec 6, 2017	40.11	40.55	39.52	39.68
5295	NASDAQ	ARTNA	Tue, Dec 5, 2017	41.49	41.49	40.12	40.24
5294	NASDAQ	ARTNA	Mon, Dec 4, 2017	42.15	42.64	41.34	41.48
5293	NASDAQ	ARTNA	Fri, Dec 1, 2017	42.33	42.91	41.13	41.99
5292	NASDAQ	ARTNA	Thu, Nov 30, 2017	42.67	43.16	42.13	42.34
5291	NASDAQ	ARTNA	Wed, Nov 29, 2017	40.73	42.99	40.73	42.66
5290	NASDAQ	ARTNA	Tue, Nov 28, 2017	40.65	41.39	40.19	41.11
5289	NASDAQ	ARTNA	Mon, Nov 27, 2017	40.79	40.90	40.02	40.60
5288	NASDAQ	ARTNA	Fri, Nov 24, 2017	40.80	41.03	39.97	40.81
5287	NASDAQ	ARTNA	Wed, Nov 22, 2017	40.94	40.99	39.90	40.67
5286	NASDAQ	ARTNA	Tue, Nov 21, 2017	40.05	40.90	39.99	40.72
5285	NASDAQ	ARTNA	Mon, Nov 20, 2017	39.35	39.95	38.99	39.95
5284	NASDAQ	ARTNA	Fri, Nov 17, 2017	39.29	39.58	38.74	39.34
5283	NASDAQ	ARTNA	Thu, Nov 16, 2017	38.49	39.65	38.11	39.57
5282	NASDAQ	ARTNA	Wed, Nov 15, 2017	38.87	39.25	38.29	38.45
5281	NASDAQ	ARTNA	Tue, Nov 14, 2017	37.56	39.25	37.52	39.01
5280	NASDAQ	ARTNA	Mon, Nov 13, 2017	38.40	38.40	37.31	37.79
5279	NASDAQ	ARTNA	Fri, Nov 10, 2017	38.55	38.83	37.83	37.96
5278	NASDAQ	ARTNA	Thu, Nov 9, 2017	39.07	39.47	38.61	38.89
5277	NASDAQ	ARTNA	Wed, Nov 8, 2017	39.03	39.49	38.65	39.49
5276	NASDAQ	ARTNA	Tue, Nov 7, 2017	38.89	39.41	38.46	39.11
5275	NASDAQ	ARTNA	Mon, Nov 6, 2017	40.95	40.98	38.89	38.89
5274	NASDAQ	ARTNA	Fri, Nov 3, 2017	41.04	41.40	40.49	40.86
5273	NASDAQ	ARTNA	Thu, Nov 2, 2017	40.32	41.55	40.01	41.39
5272	NASDAQ	ARTNA	Wed, Nov 1, 2017	40.97	40.97	39.70	40.09
5271	NASDAQ	ARTNA	Tue, Oct 31, 2017	40.51	41.59	40.44	40.62
5270	NASDAQ	ARTNA	Mon, Oct 30, 2017	41.40	42.21	40.02	40.59
5269	NASDAQ	ARTNA	Fri, Oct 27, 2017	41.30	42.81	41.30	42.08
5268	NASDAQ	ARTNA	Thu, Oct 26, 2017	41.00	41.94	40.71	41.17
5267	NASDAQ	ARTNA	Wed, Oct 25, 2017	39.98	40.99	39.57	40.92
5266	NASDAQ	ARTNA	Tue, Oct 24, 2017	41.30	41.43	40.08	40.22
5265	NASDAQ	ARTNA	Mon, Oct 23, 2017	41.63	41.94	41.17	41.22
5264	NASDAQ	ARTNA	Fri, Oct 20, 2017	42.46	42.46	41.76	41.80
5263	NASDAQ	ARTNA	Thu, Oct 19, 2017	42.19	42.50	42.03	42.32
5262	NASDAQ	ARTNA	Wed, Oct 18, 2017	42.40	42.69	41.65	42.21
5261	NASDAQ	ARTNA	Tue, Oct 17, 2017	42.70	43.02	42.09	42.21
5260	NASDAQ	ARTNA	Mon, Oct 16, 2017	42.32	43.09	42.19	42.36
5259	NASDAQ	ARTNA	Fri, Oct 13, 2017	42.82	43.22	42.17	42.49
5258	NASDAQ	ARTNA	Thu, Oct 12, 2017	41.82	43.10	41.82	42.56
5257	NASDAQ	ARTNA	Wed, Oct 11, 2017	39.40	42.09	39.40	42.06
5256	NASDAQ	ARTNA	Tue, Oct 10, 2017	39.73	40.68	39.73	40.37
5255	NASDAQ	ARTNA	Mon, Oct 9, 2017	39.70	40.56	39.70	39.85
5254	NASDAQ	ARTNA	Fri, Oct 6, 2017	40.22	40.22	39.56	39.69
5253	NASDAQ	ARTNA	Thu, Oct 5, 2017	39.51	40.53	39.50	40.52
5252	NASDAQ	ARTNA	Wed, Oct 4, 2017	38.93	40.09	38.89	39.71
5251	NASDAQ	ARTNA	Tue, Oct 3, 2017	38.27	39.33	38.27	39.19
5250	NASDAQ	ARTNA	Mon, Oct 2, 2017	38.02	38.63	37.38	38.56
5249	NASDAQ	ARTNA	Fri, Sep 29, 2017	38.56	38.76	37.65	37.80
5248	NASDAQ	ARTNA	Thu, Sep 28, 2017	38.21	38.69	37.65	38.69
5247	NASDAQ	ARTNA	Wed, Sep 27, 2017	37.80	38.52	37.38	38.20
5246	NASDAQ	ARTNA	Tue, Sep 26, 2017	37.00	37.85	37.00	37.70
5245	NASDAQ	ARTNA	Mon, Sep 25, 2017	37.00	37.35	36.71	37.23
5244	NASDAQ	ARTNA	Fri, Sep 22, 2017	37.12	37.49	36.86	37.01
5243	NASDAQ	ARTNA	Thu, Sep 21, 2017	37.20	37.51	37.07	37.21
5242	NASDAQ	ARTNA	Wed, Sep 20, 2017	37.50	37.55	37.27	37.39
5241	NASDAQ	ARTNA	Tue, Sep 19, 2017	37.21	37.55	37.15	37.51
5240	NASDAQ	ARTNA	Mon, Sep 18, 2017	37.13	37.48	36.93	37.13
5239	NASDAQ	ARTNA	Fri, Sep 15, 2017	37.45	37.45	36.86	37.08
5238	NASDAQ	ARTNA	Thu, Sep 14, 2017	36.93	37.55	36.86	37.30
5237	NASDAQ	ARTNA	Wed, Sep 13, 2017	37.14	37.66	36.91	36.92
5236	NASDAQ	ARTNA	Tue, Sep 12, 2017	38.98	38.98	36.95	37.14
5235	NASDAQ	ARTNA	Mon, Sep 11, 2017	38.08	39.29	38.08	38.97
5234	NASDAQ	ARTNA	Fri, Sep 8, 2017	37.73	38.71	37.73	38.07
5233	NASDAQ	ARTNA	Thu, Sep 7, 2017	37.21	37.84	37.07	37.72
5232	NASDAQ	ARTNA	Wed, Sep 6, 2017	37.03	37.89	37.03	37.09
5231	NASDAQ	ARTNA	Tue, Sep 5, 2017	36.11	37.13	36.11	37.02
5230	NASDAQ	ARTNA	Fri, Sep 1, 2017	37.28	37.42	36.24	36.55
5229	NASDAQ	ARTNA	Thu, Aug 31, 2017	36.95	37.40	36.52	37.09
5228	NASDAQ	ARTNA	Wed, Aug 30, 2017	37.18	37.18	36.82	36.85
5227	NASDAQ	ARTNA	Tue, Aug 29, 2017	36.98	37.88	36.72	37.27
5226	NASDAQ	ARTNA	Mon, Aug 28, 2017	37.32	37.34	36.79	37.05
5225	NASDAQ	ARTNA	Fri, Aug 25, 2017	37.11	37.51	36.43	37.29
5224	NASDAQ	ARTNA	Thu, Aug 24, 2017	35.97	36.97	35.85	36.88
5223	NASDAQ	ARTNA	Wed, Aug 23, 2017	36.30	36.78	35.77	35.96
5222	NASDAQ	ARTNA	Tue, Aug 22, 2017	36.36	36.74	36.21	36.39
5221	NASDAQ	ARTNA	Mon, Aug 21, 2017	36.16	36.53	36.15	36.32
5220	NASDAQ	ARTNA	Fri, Aug 18, 2017	36.56	36.71	36.17	36.27
5219	NASDAQ	ARTNA	Thu, Aug 17, 2017	36.80	36.91	36.33	36.69
5218	NASDAQ	ARTNA	Wed, Aug 16, 2017	36.90	37.20	36.70	36.81
5217	NASDAQ	ARTNA	Tue, Aug 15, 2017	37.59	37.59	36.57	36.74
5216	NASDAQ	ARTNA	Mon, Aug 14, 2017	36.02	37.31	36.02	37.27
5215	NASDAQ	ARTNA	Fri, Aug 11, 2017	37.26	37.26	35.97	36.01
5214	NASDAQ	ARTNA	Thu, Aug 10, 2017	37.30	37.85	36.94	37.28
5213	NASDAQ	ARTNA	Wed, Aug 9, 2017	38.11	38.34	37.29	37.59
5212	NASDAQ	ARTNA	Tue, Aug 8, 2017	38.82	38.96	38.05	38.09
5211	NASDAQ	ARTNA	Mon, Aug 7, 2017	39.39	39.48	38.28	38.87
5210	NASDAQ	ARTNA	Fri, Aug 4, 2017	40.08	40.13	39.28	39.46
5209	NASDAQ	ARTNA	Thu, Aug 3, 2017	39.57	40.19	39.51	39.80
5208	NASDAQ	ARTNA	Wed, Aug 2, 2017	38.64	39.67	38.08	39.40
5207	NASDAQ	ARTNA	Tue, Aug 1, 2017	39.07	39.11	38.18	39.00
5206	NASDAQ	ARTNA	Mon, Jul 31, 2017	39.33	39.40	38.70	38.89
5205	NASDAQ	ARTNA	Fri, Jul 28, 2017	38.76	39.39	38.56	39.23
5204	NASDAQ	ARTNA	Thu, Jul 27, 2017	39.80	39.80	38.40	38.73
5203	NASDAQ	ARTNA	Wed, Jul 26, 2017	39.41	39.90	38.58	39.68
5202	NASDAQ	ARTNA	Tue, Jul 25, 2017	38.30	39.88	38.15	39.45
5201	NASDAQ	ARTNA	Mon, Jul 24, 2017	38.95	38.95	38.00	38.06
5200	NASDAQ	ARTNA	Fri, Jul 21, 2017	38.48	39.09	38.35	38.96
5199	NASDAQ	ARTNA	Thu, Jul 20, 2017	37.99	38.34	37.52	38.34
5198	NASDAQ	ARTNA	Wed, Jul 19, 2017	37.48	38.19	37.48	38.00
5197	NASDAQ	ARTNA	Tue, Jul 18, 2017	36.68	37.65	36.68	37.39
5196	NASDAQ	ARTNA	Mon, Jul 17, 2017	36.98	37.36	36.51	37.00
5195	NASDAQ	ARTNA	Fri, Jul 14, 2017	37.26	37.75	36.91	37.16
5194	NASDAQ	ARTNA	Thu, Jul 13, 2017	37.18	37.88	36.32	37.10
5193	NASDAQ	ARTNA	Wed, Jul 12, 2017	36.83	37.97	36.79	37.24
5192	NASDAQ	ARTNA	Tue, Jul 11, 2017	37.01	37.62	36.30	36.56
5191	NASDAQ	ARTNA	Mon, Jul 10, 2017	37.42	38.70	36.93	37.02
5190	NASDAQ	ARTNA	Fri, Jul 7, 2017	37.33	37.98	37.33	37.75
5189	NASDAQ	ARTNA	Thu, Jul 6, 2017	37.56	37.72	36.84	37.22
5188	NASDAQ	ARTNA	Wed, Jul 5, 2017	38.21	38.21	37.34	37.61
5187	NASDAQ	ARTNA	Mon, Jul 3, 2017	38.03	38.59	37.90	38.45
5186	NASDAQ	ARTNA	Fri, Jun 30, 2017	37.45	39.09	36.17	37.64
5185	NASDAQ	ARTNA	Thu, Jun 29, 2017	38.07	38.17	37.00	37.39
5184	NASDAQ	ARTNA	Wed, Jun 28, 2017	38.07	39.52	37.51	38.06
5183	NASDAQ	ARTNA	Tue, Jun 27, 2017	39.38	39.38	37.71	38.06
5182	NASDAQ	ARTNA	Mon, Jun 26, 2017	39.67	39.89	39.35	39.38
5181	NASDAQ	ARTNA	Fri, Jun 23, 2017	39.34	40.25	38.29	40.10
5180	NASDAQ	ARTNA	Thu, Jun 22, 2017	38.60	39.28	37.96	38.72
5179	NASDAQ	ARTNA	Wed, Jun 21, 2017	38.50	39.39	38.43	38.55
5178	NASDAQ	ARTNA	Tue, Jun 20, 2017	40.01	40.01	38.90	39.42
5177	NASDAQ	ARTNA	Mon, Jun 19, 2017	41.77	41.90	39.22	40.03
5176	NASDAQ	ARTNA	Fri, Jun 16, 2017	40.14	41.61	40.14	41.56
5175	NASDAQ	ARTNA	Thu, Jun 15, 2017	39.96	41.10	39.96	40.68
5174	NASDAQ	ARTNA	Wed, Jun 14, 2017	40.40	40.80	39.97	40.53
5173	NASDAQ	ARTNA	Tue, Jun 13, 2017	39.75	41.04	39.58	40.41
5172	NASDAQ	ARTNA	Mon, Jun 12, 2017	40.99	41.12	39.31	39.88
5171	NASDAQ	ARTNA	Fri, Jun 9, 2017	39.19	41.17	38.73	41.00
5170	NASDAQ	ARTNA	Thu, Jun 8, 2017	37.90	39.91	37.90	39.12
5169	NASDAQ	ARTNA	Wed, Jun 7, 2017	37.39	39.00	37.39	38.21
5168	NASDAQ	ARTNA	Tue, Jun 6, 2017	37.44	38.50	36.63	37.11
5167	NASDAQ	ARTNA	Mon, Jun 5, 2017	38.29	38.45	36.98	37.46
5166	NASDAQ	ARTNA	Fri, Jun 2, 2017	36.50	38.48	36.50	37.53
5165	NASDAQ	ARTNA	Thu, Jun 1, 2017	35.23	36.20	35.01	36.03
5164	NASDAQ	ARTNA	Wed, May 31, 2017	35.53	35.87	35.06	35.13
5163	NASDAQ	ARTNA	Tue, May 30, 2017	36.12	36.28	35.47	35.51
5162	NASDAQ	ARTNA	Fri, May 26, 2017	36.34	36.41	36.05	36.24
5161	NASDAQ	ARTNA	Thu, May 25, 2017	36.29	36.55	36.08	36.08
5160	NASDAQ	ARTNA	Wed, May 24, 2017	36.78	37.04	36.10	36.29
5159	NASDAQ	ARTNA	Tue, May 23, 2017	36.29	36.70	36.22	36.69
5158	NASDAQ	ARTNA	Mon, May 22, 2017	36.00	36.36	36.00	36.08
5157	NASDAQ	ARTNA	Fri, May 19, 2017	36.55	36.60	36.00	36.07
5156	NASDAQ	ARTNA	Thu, May 18, 2017	37.27	37.31	36.52	36.56
5155	NASDAQ	ARTNA	Wed, May 17, 2017	37.16	37.91	36.25	37.36
5154	NASDAQ	ARTNA	Tue, May 16, 2017	36.62	37.69	36.49	37.56
5153	NASDAQ	ARTNA	Mon, May 15, 2017	36.50	37.05	36.50	36.74
5152	NASDAQ	ARTNA	Fri, May 12, 2017	36.72	36.95	36.08	36.43
5151	NASDAQ	ARTNA	Thu, May 11, 2017	36.77	36.94	35.53	36.56
5150	NASDAQ	ARTNA	Wed, May 10, 2017	36.02	37.13	35.87	36.81
5149	NASDAQ	ARTNA	Tue, May 9, 2017	36.55	36.91	35.49	36.05
5148	NASDAQ	ARTNA	Mon, May 8, 2017	37.09	37.50	35.27	36.35
5147	NASDAQ	ARTNA	Fri, May 5, 2017	38.09	38.09	36.26	37.08
5146	NASDAQ	ARTNA	Thu, May 4, 2017	38.00	38.30	35.97	38.30
5145	NASDAQ	ARTNA	Wed, May 3, 2017	38.22	38.26	37.81	38.10
5144	NASDAQ	ARTNA	Tue, May 2, 2017	38.56	38.80	38.31	38.44
5143	NASDAQ	ARTNA	Mon, May 1, 2017	38.34	38.83	38.04	38.51
5142	NASDAQ	ARTNA	Fri, Apr 28, 2017	38.79	38.83	38.09	38.41
5141	NASDAQ	ARTNA	Thu, Apr 27, 2017	39.50	39.97	38.57	38.83
5140	NASDAQ	ARTNA	Wed, Apr 26, 2017	38.41	40.40	37.58	39.49
5139	NASDAQ	ARTNA	Tue, Apr 25, 2017	38.58	39.13	38.14	38.48
5138	NASDAQ	ARTNA	Mon, Apr 24, 2017	38.70	38.75	38.16	38.26
5137	NASDAQ	ARTNA	Fri, Apr 21, 2017	38.37	38.70	38.10	38.18
5136	NASDAQ	ARTNA	Thu, Apr 20, 2017	37.48	38.74	36.85	38.73
5135	NASDAQ	ARTNA	Wed, Apr 19, 2017	37.38	38.10	36.78	37.48
5134	NASDAQ	ARTNA	Tue, Apr 18, 2017	36.01	37.59	35.74	37.44
5133	NASDAQ	ARTNA	Mon, Apr 17, 2017	35.55	36.41	35.55	36.20
5132	NASDAQ	ARTNA	Thu, Apr 13, 2017	35.64	36.10	35.05	35.77
5131	NASDAQ	ARTNA	Wed, Apr 12, 2017	35.67	35.67	35.37	35.50
5130	NASDAQ	ARTNA	Tue, Apr 11, 2017	35.13	36.16	35.13	35.84
5129	NASDAQ	ARTNA	Mon, Apr 10, 2017	35.86	35.86	34.89	35.07
5128	NASDAQ	ARTNA	Fri, Apr 7, 2017	33.90	36.84	33.77	35.70
5127	NASDAQ	ARTNA	Thu, Apr 6, 2017	34.00	34.00	33.54	33.99
5126	NASDAQ	ARTNA	Wed, Apr 5, 2017	33.55	34.00	33.55	33.95
5125	NASDAQ	ARTNA	Tue, Apr 4, 2017	32.85	33.87	32.84	33.73
5124	NASDAQ	ARTNA	Mon, Apr 3, 2017	32.56	33.48	32.30	32.99
5123	NASDAQ	ARTNA	Fri, Mar 31, 2017	32.58	32.78	32.28	32.56
5122	NASDAQ	ARTNA	Thu, Mar 30, 2017	32.40	32.74	32.17	32.56
5121	NASDAQ	ARTNA	Wed, Mar 29, 2017	32.13	32.86	32.13	32.75
5120	NASDAQ	ARTNA	Tue, Mar 28, 2017	32.25	32.34	32.01	32.28
5119	NASDAQ	ARTNA	Mon, Mar 27, 2017	32.26	32.40	32.10	32.22
5118	NASDAQ	ARTNA	Fri, Mar 24, 2017	32.96	33.91	32.30	32.38
5117	NASDAQ	ARTNA	Thu, Mar 23, 2017	32.56	33.28	32.56	32.91
5116	NASDAQ	ARTNA	Wed, Mar 22, 2017	33.00	33.62	32.20	32.67
5115	NASDAQ	ARTNA	Tue, Mar 21, 2017	33.40	33.72	32.98	32.99
5114	NASDAQ	ARTNA	Mon, Mar 20, 2017	33.74	33.74	33.30	33.39
5113	NASDAQ	ARTNA	Fri, Mar 17, 2017	33.35	34.00	32.18	33.66
5112	NASDAQ	ARTNA	Thu, Mar 16, 2017	33.72	33.96	33.06	33.44
5111	NASDAQ	ARTNA	Wed, Mar 15, 2017	32.55	34.00	31.79	33.91
5110	NASDAQ	ARTNA	Tue, Mar 14, 2017	31.88	32.62	31.56	32.53
5109	NASDAQ	ARTNA	Mon, Mar 13, 2017	31.51	32.05	31.50	31.93
5108	NASDAQ	ARTNA	Fri, Mar 10, 2017	31.67	31.96	31.47	31.60
5107	NASDAQ	ARTNA	Thu, Mar 9, 2017	32.00	32.26	31.37	31.37
5106	NASDAQ	ARTNA	Wed, Mar 8, 2017	32.32	32.42	32.07	32.14
5105	NASDAQ	ARTNA	Tue, Mar 7, 2017	32.65	32.74	32.16	32.27
5104	NASDAQ	ARTNA	Mon, Mar 6, 2017	32.36	32.66	32.26	32.27
5103	NASDAQ	ARTNA	Fri, Mar 3, 2017	34.22	34.50	32.11	32.39
5102	NASDAQ	ARTNA	Thu, Mar 2, 2017	33.52	34.49	32.87	34.21
5101	NASDAQ	ARTNA	Wed, Mar 1, 2017	32.98	33.95	32.88	33.75
5100	NASDAQ	ARTNA	Tue, Feb 28, 2017	32.92	33.00	32.72	32.95
5099	NASDAQ	ARTNA	Mon, Feb 27, 2017	32.62	33.00	32.57	32.99
5098	NASDAQ	ARTNA	Fri, Feb 24, 2017	32.84	32.97	32.49	32.71
5097	NASDAQ	ARTNA	Thu, Feb 23, 2017	32.66	33.00	32.01	32.98
5096	NASDAQ	ARTNA	Wed, Feb 22, 2017	32.29	32.66	32.01	32.35
5095	NASDAQ	ARTNA	Tue, Feb 21, 2017	32.40	32.40	31.99	32.13
5094	NASDAQ	ARTNA	Fri, Feb 17, 2017	31.70	32.44	31.51	32.39
5093	NASDAQ	ARTNA	Thu, Feb 16, 2017	31.84	32.00	31.19	31.60
5092	NASDAQ	ARTNA	Wed, Feb 15, 2017	31.31	31.87	31.15	31.79
5091	NASDAQ	ARTNA	Tue, Feb 14, 2017	31.39	31.66	31.21	31.50
5090	NASDAQ	ARTNA	Mon, Feb 13, 2017	30.21	31.41	30.09	31.39
5089	NASDAQ	ARTNA	Fri, Feb 10, 2017	29.95	30.22	29.86	29.99
5088	NASDAQ	ARTNA	Thu, Feb 9, 2017	30.20	30.34	29.95	30.01
5087	NASDAQ	ARTNA	Wed, Feb 8, 2017	30.10	30.67	29.83	30.07
5086	NASDAQ	ARTNA	Tue, Feb 7, 2017	30.41	31.07	30.21	30.58
5085	NASDAQ	ARTNA	Mon, Feb 6, 2017	31.19	31.57	30.39	30.56
5084	NASDAQ	ARTNA	Fri, Feb 3, 2017	31.45	31.95	30.80	31.05
5083	NASDAQ	ARTNA	Thu, Feb 2, 2017	31.12	31.14	30.50	30.83
5082	NASDAQ	ARTNA	Wed, Feb 1, 2017	30.97	31.26	30.66	30.83
5081	NASDAQ	ARTNA	Tue, Jan 31, 2017	30.80	31.05	30.51	31.03
5080	NASDAQ	ARTNA	Mon, Jan 30, 2017	32.19	32.33	31.00	31.04
5079	NASDAQ	ARTNA	Fri, Jan 27, 2017	32.72	32.72	31.88	32.25
5078	NASDAQ	ARTNA	Thu, Jan 26, 2017	32.53	32.74	32.15	32.42
5077	NASDAQ	ARTNA	Wed, Jan 25, 2017	32.00	32.77	32.00	32.74
5076	NASDAQ	ARTNA	Tue, Jan 24, 2017	31.85	32.00	31.51	31.99
5075	NASDAQ	ARTNA	Mon, Jan 23, 2017	31.69	31.86	31.50	31.65
5074	NASDAQ	ARTNA	Fri, Jan 20, 2017	31.41	31.89	31.41	31.57
5073	NASDAQ	ARTNA	Thu, Jan 19, 2017	31.68	31.90	31.25	31.50
5072	NASDAQ	ARTNA	Wed, Jan 18, 2017	30.72	31.93	30.72	31.64
5071	NASDAQ	ARTNA	Tue, Jan 17, 2017	30.19	30.92	30.02	30.73
5070	NASDAQ	ARTNA	Fri, Jan 13, 2017	29.43	29.95	29.37	29.83
5069	NASDAQ	ARTNA	Thu, Jan 12, 2017	30.22	30.37	29.43	29.46
5068	NASDAQ	ARTNA	Wed, Jan 11, 2017	30.27	30.56	30.11	30.31
5067	NASDAQ	ARTNA	Tue, Jan 10, 2017	30.06	30.48	29.92	30.38
5066	NASDAQ	ARTNA	Mon, Jan 9, 2017	30.57	30.62	30.10	30.13
5065	NASDAQ	ARTNA	Fri, Jan 6, 2017	30.93	31.08	30.23	30.70
5064	NASDAQ	ARTNA	Thu, Jan 5, 2017	31.01	31.79	30.77	30.85
5063	NASDAQ	ARTNA	Wed, Jan 4, 2017	30.98	31.77	30.97	31.14
5062	NASDAQ	ARTNA	Tue, Jan 3, 2017	32.03	32.03	30.84	30.89
5061	NASDAQ	ARTNA	Fri, Dec 30, 2016	31.75	31.96	31.50	31.94
5060	NASDAQ	ARTNA	Thu, Dec 29, 2016	31.94	32.83	31.81	31.92
5059	NASDAQ	ARTNA	Wed, Dec 28, 2016	32.38	32.95	31.84	31.95
5058	NASDAQ	ARTNA	Tue, Dec 27, 2016	31.94	32.76	31.93	32.56
5057	NASDAQ	ARTNA	Fri, Dec 23, 2016	31.80	32.20	31.63	31.77
5056	NASDAQ	ARTNA	Thu, Dec 22, 2016	32.40	32.59	31.80	31.84
5055	NASDAQ	ARTNA	Wed, Dec 21, 2016	32.21	32.80	32.21	32.43
5054	NASDAQ	ARTNA	Tue, Dec 20, 2016	32.36	32.82	32.20	32.37
5053	NASDAQ	ARTNA	Mon, Dec 19, 2016	32.03	32.75	32.03	32.63
5052	NASDAQ	ARTNA	Fri, Dec 16, 2016	32.00	32.40	31.86	32.32
5051	NASDAQ	ARTNA	Thu, Dec 15, 2016	31.47	32.10	31.43	31.93
5050	NASDAQ	ARTNA	Wed, Dec 14, 2016	32.68	32.68	31.45	31.46
5049	NASDAQ	ARTNA	Tue, Dec 13, 2016	32.71	32.75	32.21	32.49
5048	NASDAQ	ARTNA	Mon, Dec 12, 2016	32.66	32.90	32.40	32.62
5047	NASDAQ	ARTNA	Fri, Dec 9, 2016	32.44	32.84	31.95	32.73
5046	NASDAQ	ARTNA	Thu, Dec 8, 2016	32.01	32.69	31.36	32.35
5045	NASDAQ	ARTNA	Wed, Dec 7, 2016	32.43	32.57	31.69	31.95
5044	NASDAQ	ARTNA	Tue, Dec 6, 2016	32.55	32.69	31.86	32.37
5043	NASDAQ	ARTNA	Mon, Dec 5, 2016	32.01	32.61	31.39	32.52
5042	NASDAQ	ARTNA	Fri, Dec 2, 2016	31.87	32.10	31.82	31.89
5041	NASDAQ	ARTNA	Thu, Dec 1, 2016	31.47	32.20	31.29	31.49
5040	NASDAQ	ARTNA	Wed, Nov 30, 2016	32.52	32.74	31.44	31.52
5039	NASDAQ	ARTNA	Tue, Nov 29, 2016	32.46	32.94	32.46	32.79
5038	NASDAQ	ARTNA	Mon, Nov 28, 2016	32.47	32.99	32.43	32.70
5037	NASDAQ	ARTNA	Fri, Nov 25, 2016	31.61	32.75	31.46	32.43
5036	NASDAQ	ARTNA	Wed, Nov 23, 2016	32.48	33.00	31.22	31.53
5035	NASDAQ	ARTNA	Tue, Nov 22, 2016	32.29	33.00	32.21	33.00
5034	NASDAQ	ARTNA	Mon, Nov 21, 2016	31.93	32.30	31.63	32.29
5033	NASDAQ	ARTNA	Fri, Nov 18, 2016	31.65	31.95	30.98	31.74
5032	NASDAQ	ARTNA	Thu, Nov 17, 2016	31.30	31.91	30.51	31.65
5031	NASDAQ	ARTNA	Wed, Nov 16, 2016	30.72	31.40	29.71	31.40
5030	NASDAQ	ARTNA	Tue, Nov 15, 2016	30.88	31.48	30.23	31.05
5029	NASDAQ	ARTNA	Mon, Nov 14, 2016	30.78	31.24	29.79	30.93
5028	NASDAQ	ARTNA	Fri, Nov 11, 2016	28.30	30.97	27.93	30.96
5027	NASDAQ	ARTNA	Thu, Nov 10, 2016	27.98	28.45	27.13	28.36
5026	NASDAQ	ARTNA	Wed, Nov 9, 2016	27.98	28.34	27.31	28.00
5025	NASDAQ	ARTNA	Tue, Nov 8, 2016	28.27	28.59	28.20	28.53
5024	NASDAQ	ARTNA	Mon, Nov 7, 2016	27.62	28.34	27.62	28.27
5023	NASDAQ	ARTNA	Fri, Nov 4, 2016	28.58	28.74	27.93	28.03
5022	NASDAQ	ARTNA	Thu, Nov 3, 2016	27.58	28.50	27.58	28.27
5021	NASDAQ	ARTNA	Wed, Nov 2, 2016	27.32	27.55	27.10	27.27
5020	NASDAQ	ARTNA	Tue, Nov 1, 2016	28.12	28.35	27.32	27.39
5019	NASDAQ	ARTNA	Mon, Oct 31, 2016	27.83	28.29	27.60	28.22
5018	NASDAQ	ARTNA	Fri, Oct 28, 2016	27.64	28.01	27.54	27.73
5017	NASDAQ	ARTNA	Thu, Oct 27, 2016	27.90	28.00	27.73	27.75
5016	NASDAQ	ARTNA	Wed, Oct 26, 2016	28.36	28.73	27.93	28.06
5015	NASDAQ	ARTNA	Tue, Oct 25, 2016	28.34	28.68	28.21	28.43
5014	NASDAQ	ARTNA	Mon, Oct 24, 2016	28.32	28.44	28.25	28.27
5013	NASDAQ	ARTNA	Fri, Oct 21, 2016	28.22	28.36	28.13	28.28
5012	NASDAQ	ARTNA	Thu, Oct 20, 2016	28.08	28.34	28.04	28.23
5011	NASDAQ	ARTNA	Wed, Oct 19, 2016	28.10	28.25	27.60	28.12
5010	NASDAQ	ARTNA	Tue, Oct 18, 2016	28.06	28.12	27.70	28.00
5009	NASDAQ	ARTNA	Mon, Oct 17, 2016	27.90	28.11	27.60	27.97
5008	NASDAQ	ARTNA	Fri, Oct 14, 2016	27.89	28.10	27.62	27.69
5007	NASDAQ	ARTNA	Thu, Oct 13, 2016	27.20	28.10	27.20	27.88
5006	NASDAQ	ARTNA	Wed, Oct 12, 2016	27.09	28.05	26.92	27.47
5005	NASDAQ	ARTNA	Tue, Oct 11, 2016	27.79	27.95	26.89	26.96
5004	NASDAQ	ARTNA	Mon, Oct 10, 2016	26.83	27.96	26.83	27.81
5003	NASDAQ	ARTNA	Fri, Oct 7, 2016	27.23	27.30	26.78	26.78
5002	NASDAQ	ARTNA	Thu, Oct 6, 2016	26.85	27.20	26.75	27.18
5001	NASDAQ	ARTNA	Wed, Oct 5, 2016	27.41	27.41	26.72	26.98
5000	NASDAQ	ARTNA	Tue, Oct 4, 2016	28.18	28.18	27.00	27.14
4999	NASDAQ	ARTNA	Mon, Oct 3, 2016	28.35	28.68	28.03	28.18
4998	NASDAQ	ARTNA	Fri, Sep 30, 2016	28.44	28.74	28.26	28.54
4997	NASDAQ	ARTNA	Thu, Sep 29, 2016	28.65	28.65	28.11	28.31
4996	NASDAQ	ARTNA	Wed, Sep 28, 2016	28.75	29.01	28.60	28.75
4995	NASDAQ	ARTNA	Tue, Sep 27, 2016	29.13	29.38	28.70	28.78
4994	NASDAQ	ARTNA	Mon, Sep 26, 2016	29.49	29.59	29.00	29.05
4993	NASDAQ	ARTNA	Fri, Sep 23, 2016	29.86	29.86	29.05	29.45
4992	NASDAQ	ARTNA	Thu, Sep 22, 2016	29.00	30.04	28.69	30.00
4991	NASDAQ	ARTNA	Wed, Sep 21, 2016	28.67	28.96	28.09	28.92
4990	NASDAQ	ARTNA	Tue, Sep 20, 2016	28.20	28.75	27.89	28.49
4989	NASDAQ	ARTNA	Mon, Sep 19, 2016	27.96	28.44	27.74	28.22
4988	NASDAQ	ARTNA	Fri, Sep 16, 2016	27.23	27.96	27.12	27.92
4987	NASDAQ	ARTNA	Thu, Sep 15, 2016	26.57	27.22	26.57	27.14
4986	NASDAQ	ARTNA	Wed, Sep 14, 2016	26.55	26.71	26.36	26.64
4985	NASDAQ	ARTNA	Tue, Sep 13, 2016	26.74	26.96	26.28	26.32
4984	NASDAQ	ARTNA	Mon, Sep 12, 2016	26.56	27.33	26.48	26.97
4983	NASDAQ	ARTNA	Fri, Sep 9, 2016	27.85	27.85	26.41	26.43
4982	NASDAQ	ARTNA	Thu, Sep 8, 2016	27.12	28.09	27.12	27.98
4981	NASDAQ	ARTNA	Wed, Sep 7, 2016	27.15	27.36	27.07	27.18
4980	NASDAQ	ARTNA	Tue, Sep 6, 2016	27.19	27.33	27.07	27.18
4979	NASDAQ	ARTNA	Fri, Sep 2, 2016	27.10	27.81	27.00	27.18
4978	NASDAQ	ARTNA	Thu, Sep 1, 2016	27.64	27.64	27.06	27.10
4977	NASDAQ	ARTNA	Wed, Aug 31, 2016	27.86	27.86	27.42	27.47
4976	NASDAQ	ARTNA	Tue, Aug 30, 2016	29.15	29.18	27.89	27.95
4975	NASDAQ	ARTNA	Mon, Aug 29, 2016	29.79	29.91	29.11	29.18
4974	NASDAQ	ARTNA	Fri, Aug 26, 2016	29.89	30.33	29.62	29.77
4973	NASDAQ	ARTNA	Thu, Aug 25, 2016	29.65	29.93	29.63	29.73
4972	NASDAQ	ARTNA	Wed, Aug 24, 2016	30.04	30.04	29.57	29.72
4971	NASDAQ	ARTNA	Tue, Aug 23, 2016	30.23	30.39	29.80	29.93
4970	NASDAQ	ARTNA	Mon, Aug 22, 2016	29.98	30.30	29.78	30.11
4969	NASDAQ	ARTNA	Fri, Aug 19, 2016	30.26	30.62	29.63	29.76
4968	NASDAQ	ARTNA	Thu, Aug 18, 2016	30.09	30.55	30.08	30.44
4967	NASDAQ	ARTNA	Wed, Aug 17, 2016	29.23	30.11	29.18	29.98
4966	NASDAQ	ARTNA	Tue, Aug 16, 2016	31.00	31.00	29.11	29.40
4965	NASDAQ	ARTNA	Mon, Aug 15, 2016	31.54	31.54	30.86	30.97
4964	NASDAQ	ARTNA	Fri, Aug 12, 2016	31.41	31.66	31.36	31.44
4963	NASDAQ	ARTNA	Thu, Aug 11, 2016	31.19	31.55	31.03	31.47
4962	NASDAQ	ARTNA	Wed, Aug 10, 2016	31.68	31.80	30.94	31.19
4961	NASDAQ	ARTNA	Tue, Aug 9, 2016	32.01	32.57	31.63	31.77
4960	NASDAQ	ARTNA	Mon, Aug 8, 2016	32.64	32.64	32.00	32.02
4959	NASDAQ	ARTNA	Fri, Aug 5, 2016	32.51	32.79	32.32	32.37
4958	NASDAQ	ARTNA	Thu, Aug 4, 2016	32.50	33.01	32.50	32.50
4957	NASDAQ	ARTNA	Wed, Aug 3, 2016	33.10	33.13	32.50	32.71
4956	NASDAQ	ARTNA	Tue, Aug 2, 2016	33.20	33.28	33.08	33.11
4955	NASDAQ	ARTNA	Mon, Aug 1, 2016	34.24	34.27	33.33	33.39
4954	NASDAQ	ARTNA	Fri, Jul 29, 2016	33.82	34.26	33.69	34.09
4953	NASDAQ	ARTNA	Thu, Jul 28, 2016	33.72	33.91	33.39	33.81
4952	NASDAQ	ARTNA	Wed, Jul 27, 2016	33.43	33.74	33.25	33.70
4951	NASDAQ	ARTNA	Tue, Jul 26, 2016	33.59	33.70	33.25	33.40
4950	NASDAQ	ARTNA	Mon, Jul 25, 2016	33.51	33.84	33.00	33.40
4949	NASDAQ	ARTNA	Fri, Jul 22, 2016	33.15	33.75	33.07	33.75
4948	NASDAQ	ARTNA	Thu, Jul 21, 2016	33.29	33.73	33.13	33.24
4947	NASDAQ	ARTNA	Wed, Jul 20, 2016	33.37	33.83	32.96	33.41
4946	NASDAQ	ARTNA	Tue, Jul 19, 2016	33.20	33.70	33.11	33.32
4945	NASDAQ	ARTNA	Mon, Jul 18, 2016	32.73	33.40	32.60	33.22
4944	NASDAQ	ARTNA	Fri, Jul 15, 2016	33.19	34.31	32.54	32.67
4943	NASDAQ	ARTNA	Thu, Jul 14, 2016	33.76	33.90	33.13	33.17
4942	NASDAQ	ARTNA	Wed, Jul 13, 2016	34.07	34.26	33.73	33.78
4941	NASDAQ	ARTNA	Tue, Jul 12, 2016	33.92	34.20	33.38	33.94
4940	NASDAQ	ARTNA	Mon, Jul 11, 2016	33.96	34.18	33.40	34.07
4939	NASDAQ	ARTNA	Fri, Jul 8, 2016	33.39	34.21	33.27	34.16
4938	NASDAQ	ARTNA	Thu, Jul 7, 2016	34.43	34.44	33.48	33.48
4937	NASDAQ	ARTNA	Wed, Jul 6, 2016	34.82	35.00	34.04	34.42
4936	NASDAQ	ARTNA	Tue, Jul 5, 2016	34.63	34.93	34.32	34.87
4935	NASDAQ	ARTNA	Fri, Jul 1, 2016	34.15	34.58	33.80	34.09
4934	NASDAQ	ARTNA	Thu, Jun 30, 2016	33.58	33.94	33.20	33.92
4933	NASDAQ	ARTNA	Wed, Jun 29, 2016	33.27	33.54	33.15	33.38
4932	NASDAQ	ARTNA	Tue, Jun 28, 2016	33.21	33.21	32.72	33.08
4931	NASDAQ	ARTNA	Mon, Jun 27, 2016	31.44	33.22	31.35	33.08
4930	NASDAQ	ARTNA	Fri, Jun 24, 2016	30.10	31.69	29.41	31.69
4929	NASDAQ	ARTNA	Thu, Jun 23, 2016	31.26	31.36	30.61	30.93
4928	NASDAQ	ARTNA	Wed, Jun 22, 2016	30.99	31.41	30.90	31.01
4927	NASDAQ	ARTNA	Tue, Jun 21, 2016	30.65	31.33	30.60	31.04
4926	NASDAQ	ARTNA	Mon, Jun 20, 2016	30.60	30.84	30.20	30.65
4925	NASDAQ	ARTNA	Fri, Jun 17, 2016	31.29	31.35	29.86	30.56
4924	NASDAQ	ARTNA	Thu, Jun 16, 2016	30.68	31.34	29.59	31.21
4923	NASDAQ	ARTNA	Wed, Jun 15, 2016	31.02	31.31	30.32	30.58
4922	NASDAQ	ARTNA	Tue, Jun 14, 2016	30.43	31.31	29.53	31.04
4921	NASDAQ	ARTNA	Mon, Jun 13, 2016	29.82	30.73	29.71	30.55
4920	NASDAQ	ARTNA	Fri, Jun 10, 2016	29.49	30.06	29.46	29.71
4919	NASDAQ	ARTNA	Thu, Jun 9, 2016	30.14	30.31	29.63	29.67
4918	NASDAQ	ARTNA	Wed, Jun 8, 2016	29.76	30.32	29.56	30.31
4917	NASDAQ	ARTNA	Tue, Jun 7, 2016	29.37	29.88	29.13	29.56
4916	NASDAQ	ARTNA	Mon, Jun 6, 2016	28.93	29.39	28.93	29.26
4915	NASDAQ	ARTNA	Fri, Jun 3, 2016	28.75	29.02	28.66	28.92
4914	NASDAQ	ARTNA	Thu, Jun 2, 2016	28.37	28.81	28.37	28.59
4913	NASDAQ	ARTNA	Wed, Jun 1, 2016	28.03	28.58	27.82	28.53
4912	NASDAQ	ARTNA	Tue, May 31, 2016	28.76	28.76	28.02	28.20
4911	NASDAQ	ARTNA	Fri, May 27, 2016	28.58	28.89	28.19	28.68
4910	NASDAQ	ARTNA	Thu, May 26, 2016	28.50	28.74	28.01	28.25
4909	NASDAQ	ARTNA	Wed, May 25, 2016	28.90	29.31	28.06	28.28
4908	NASDAQ	ARTNA	Tue, May 24, 2016	27.42	29.14	27.42	28.87
4907	NASDAQ	ARTNA	Mon, May 23, 2016	27.44	27.73	26.95	27.18
4906	NASDAQ	ARTNA	Fri, May 20, 2016	26.84	27.51	26.61	27.50
4905	NASDAQ	ARTNA	Thu, May 19, 2016	26.35	26.94	26.13	26.84
4904	NASDAQ	ARTNA	Wed, May 18, 2016	26.26	26.94	26.06	26.39
4903	NASDAQ	ARTNA	Tue, May 17, 2016	27.59	27.59	26.02	26.26
4902	NASDAQ	ARTNA	Mon, May 16, 2016	27.39	28.57	27.39	27.57
4901	NASDAQ	ARTNA	Fri, May 13, 2016	27.41	27.86	27.37	27.42
4900	NASDAQ	ARTNA	Thu, May 12, 2016	27.85	28.59	27.37	27.42
4899	NASDAQ	ARTNA	Wed, May 11, 2016	28.47	28.47	27.83	27.89
4898	NASDAQ	ARTNA	Tue, May 10, 2016	28.60	28.72	28.28	28.48
4897	NASDAQ	ARTNA	Mon, May 9, 2016	28.51	28.55	27.28	28.43
4896	NASDAQ	ARTNA	Fri, May 6, 2016	28.59	29.01	28.12	28.86
4895	NASDAQ	ARTNA	Thu, May 5, 2016	27.67	28.82	27.67	28.64
4894	NASDAQ	ARTNA	Wed, May 4, 2016	27.26	28.00	26.81	27.70
4893	NASDAQ	ARTNA	Tue, May 3, 2016	27.00	27.45	27.00	27.31
4892	NASDAQ	ARTNA	Mon, May 2, 2016	26.94	27.16	26.71	27.06
4891	NASDAQ	ARTNA	Fri, Apr 29, 2016	26.87	27.08	26.55	26.99
4890	NASDAQ	ARTNA	Thu, Apr 28, 2016	27.19	27.60	26.75	26.80
4889	NASDAQ	ARTNA	Wed, Apr 27, 2016	27.59	27.67	27.02	27.38
4888	NASDAQ	ARTNA	Tue, Apr 26, 2016	27.47	27.69	27.07	27.56
4887	NASDAQ	ARTNA	Mon, Apr 25, 2016	27.11	27.67	26.68	27.29
4886	NASDAQ	ARTNA	Fri, Apr 22, 2016	26.54	27.43	26.54	27.04
4885	NASDAQ	ARTNA	Thu, Apr 21, 2016	28.68	28.97	26.52	26.54
4884	NASDAQ	ARTNA	Wed, Apr 20, 2016	29.45	29.45	28.70	28.70
4883	NASDAQ	ARTNA	Tue, Apr 19, 2016	29.53	29.53	28.86	29.45
4882	NASDAQ	ARTNA	Mon, Apr 18, 2016	28.88	29.57	28.76	29.38
4881	NASDAQ	ARTNA	Fri, Apr 15, 2016	27.86	28.91	27.70	28.77
4880	NASDAQ	ARTNA	Thu, Apr 14, 2016	27.67	27.87	27.18	27.83
4879	NASDAQ	ARTNA	Wed, Apr 13, 2016	27.67	27.67	27.20	27.58
4878	NASDAQ	ARTNA	Tue, Apr 12, 2016	27.30	27.78	27.16	27.55
4877	NASDAQ	ARTNA	Mon, Apr 11, 2016	27.35	27.58	27.14	27.23
4876	NASDAQ	ARTNA	Fri, Apr 8, 2016	27.52	27.60	27.17	27.37
4875	NASDAQ	ARTNA	Thu, Apr 7, 2016	27.30	27.77	27.29	27.51
4874	NASDAQ	ARTNA	Wed, Apr 6, 2016	27.18	27.56	27.08	27.36
4873	NASDAQ	ARTNA	Tue, Apr 5, 2016	27.73	27.73	27.73	27.07
4872	NASDAQ	ARTNA	Mon, Apr 4, 2016	27.50	27.87	27.16	27.73
4871	NASDAQ	ARTNA	Fri, Apr 1, 2016	27.87	27.98	27.45	27.60
4870	NASDAQ	ARTNA	Thu, Mar 31, 2016	27.65	28.00	27.17	27.48
4869	NASDAQ	ARTNA	Wed, Mar 30, 2016	27.20	27.73	26.75	27.48
4868	NASDAQ	ARTNA	Tue, Mar 29, 2016	26.25	27.20	25.90	26.15
4867	NASDAQ	ARTNA	Mon, Mar 28, 2016	26.24	26.24	25.72	26.00
4866	NASDAQ	ARTNA	Thu, Mar 24, 2016	25.62	25.62	25.62	26.06
4865	NASDAQ	ARTNA	Wed, Mar 23, 2016	26.50	26.70	25.49	25.62
4864	NASDAQ	ARTNA	Tue, Mar 22, 2016	26.76	26.76	26.18	26.47
4863	NASDAQ	ARTNA	Mon, Mar 21, 2016	26.80	26.84	26.17	26.52
4862	NASDAQ	ARTNA	Fri, Mar 18, 2016	25.64	26.10	25.18	26.96
4861	NASDAQ	ARTNA	Thu, Mar 17, 2016	26.05	26.05	25.17	25.52
4860	NASDAQ	ARTNA	Wed, Mar 16, 2016	26.05	26.37	25.75	26.07
4859	NASDAQ	ARTNA	Tue, Mar 15, 2016	26.18	26.18	26.18	26.07
4858	NASDAQ	ARTNA	Mon, Mar 14, 2016	26.73	26.73	26.39	26.52
4857	NASDAQ	ARTNA	Fri, Mar 11, 2016	27.03	27.13	26.07	26.73
4856	NASDAQ	ARTNA	Thu, Mar 10, 2016	27.72	27.72	26.69	27.40
4855	NASDAQ	ARTNA	Wed, Mar 9, 2016	27.07	27.07	27.07	27.40
4854	NASDAQ	ARTNA	Tue, Mar 8, 2016	27.10	27.33	26.99	27.19
4853	NASDAQ	ARTNA	Mon, Mar 7, 2016	27.54	27.75	26.98	27.19
4852	NASDAQ	ARTNA	Fri, Mar 4, 2016	27.38	27.38	27.38	27.68
4851	NASDAQ	ARTNA	Thu, Mar 3, 2016	27.78	27.78	27.78	27.38
4850	NASDAQ	ARTNA	Wed, Mar 2, 2016	27.63	27.82	27.12	27.97
4849	NASDAQ	ARTNA	Tue, Mar 1, 2016	28.25	28.25	28.25	27.97
4848	NASDAQ	ARTNA	Mon, Feb 29, 2016	27.70	28.70	27.64	28.25
4847	NASDAQ	ARTNA	Fri, Feb 26, 2016	29.00	29.00	27.76	27.86
4846	NASDAQ	ARTNA	Thu, Feb 25, 2016	29.15	29.66	28.74	29.13
4845	NASDAQ	ARTNA	Wed, Feb 24, 2016	28.81	29.18	28.81	29.16
4844	NASDAQ	ARTNA	Tue, Feb 23, 2016	28.72	29.25	28.72	28.81
4843	NASDAQ	ARTNA	Mon, Feb 22, 2016	29.26	29.46	28.77	28.93
4842	NASDAQ	ARTNA	Fri, Feb 19, 2016	29.04	29.68	28.75	29.10
4841	NASDAQ	ARTNA	Thu, Feb 18, 2016	29.14	29.60	28.72	29.11
4840	NASDAQ	ARTNA	Wed, Feb 17, 2016	29.30	29.67	29.01	29.12
4839	NASDAQ	ARTNA	Tue, Feb 16, 2016	29.57	29.82	28.99	29.35
4838	NASDAQ	ARTNA	Fri, Feb 12, 2016	29.69	30.30	29.15	29.32
4837	NASDAQ	ARTNA	Thu, Feb 11, 2016	30.10	30.37	29.46	29.51
4836	NASDAQ	ARTNA	Wed, Feb 10, 2016	29.68	30.45	29.68	30.30
4835	NASDAQ	ARTNA	Tue, Feb 9, 2016	29.32	30.08	29.01	29.66
4834	NASDAQ	ARTNA	Mon, Feb 8, 2016	28.82	29.37	28.00	29.32
4833	NASDAQ	ARTNA	Fri, Feb 5, 2016	29.47	30.55	28.84	29.22
4832	NASDAQ	ARTNA	Thu, Feb 4, 2016	31.03	31.03	29.44	29.59
4831	NASDAQ	ARTNA	Wed, Feb 3, 2016	31.46	31.94	31.04	31.05
4830	NASDAQ	ARTNA	Tue, Feb 2, 2016	30.97	31.51	30.83	31.31
4829	NASDAQ	ARTNA	Mon, Feb 1, 2016	30.46	31.31	30.43	31.10
4828	NASDAQ	ARTNA	Fri, Jan 29, 2016	28.99	30.34	28.87	30.31
4827	NASDAQ	ARTNA	Thu, Jan 28, 2016	27.79	29.00	27.79	28.76
4826	NASDAQ	ARTNA	Wed, Jan 27, 2016	27.99	28.34	27.54	27.59
4825	NASDAQ	ARTNA	Tue, Jan 26, 2016	28.17	28.65	27.83	28.04
4824	NASDAQ	ARTNA	Mon, Jan 25, 2016	28.32	28.63	27.83	27.97
4823	NASDAQ	ARTNA	Fri, Jan 22, 2016	27.64	28.38	27.14	28.32
4822	NASDAQ	ARTNA	Thu, Jan 21, 2016	27.04	27.62	26.73	27.29
4821	NASDAQ	ARTNA	Wed, Jan 20, 2016	26.39	27.61	26.30	27.09
4820	NASDAQ	ARTNA	Tue, Jan 19, 2016	26.73	27.08	26.57	26.83
4819	NASDAQ	ARTNA	Fri, Jan 15, 2016	26.58	27.15	26.06	26.74
4818	NASDAQ	ARTNA	Thu, Jan 14, 2016	26.91	27.78	26.91	27.17
4817	NASDAQ	ARTNA	Wed, Jan 13, 2016	27.04	27.67	26.55	26.98
4816	NASDAQ	ARTNA	Tue, Jan 12, 2016	27.96	27.96	26.73	27.16
4815	NASDAQ	ARTNA	Mon, Jan 11, 2016	27.50	28.06	27.36	27.86
4814	NASDAQ	ARTNA	Fri, Jan 8, 2016	27.17	27.73	26.71	27.44
4813	NASDAQ	ARTNA	Thu, Jan 7, 2016	27.10	27.25	26.91	27.14
4812	NASDAQ	ARTNA	Wed, Jan 6, 2016	26.52	27.27	26.20	27.25
4811	NASDAQ	ARTNA	Tue, Jan 5, 2016	26.50	26.92	25.76	26.82
4810	NASDAQ	ARTNA	Mon, Jan 4, 2016	27.34	27.48	26.24	26.39
4809	NASDAQ	ARTNA	Thu, Dec 31, 2015	28.60	28.60	27.58	27.70
4808	NASDAQ	ARTNA	Wed, Dec 30, 2015	29.02	29.02	28.47	28.53
4807	NASDAQ	ARTNA	Tue, Dec 29, 2015	28.72	29.16	28.55	29.11
4806	NASDAQ	ARTNA	Mon, Dec 28, 2015	28.28	28.99	28.21	28.72
4805	NASDAQ	ARTNA	Thu, Dec 24, 2015	28.23	28.49	27.96	28.45
4804	NASDAQ	ARTNA	Wed, Dec 23, 2015	28.10	28.50	27.68	28.21
4803	NASDAQ	ARTNA	Tue, Dec 22, 2015	27.59	28.09	27.10	28.08
4802	NASDAQ	ARTNA	Mon, Dec 21, 2015	27.47	28.05	27.28	27.50
4801	NASDAQ	ARTNA	Fri, Dec 18, 2015	26.07	27.48	25.96	27.38
4800	NASDAQ	ARTNA	Thu, Dec 17, 2015	26.15	26.36	25.59	26.16
4799	NASDAQ	ARTNA	Wed, Dec 16, 2015	24.98	25.67	24.98	25.60
4798	NASDAQ	ARTNA	Tue, Dec 15, 2015	24.95	25.29	24.69	25.05
4797	NASDAQ	ARTNA	Mon, Dec 14, 2015	24.70	25.89	24.59	24.77
4796	NASDAQ	ARTNA	Fri, Dec 11, 2015	25.05	25.70	24.58	24.70
4795	NASDAQ	ARTNA	Thu, Dec 10, 2015	26.05	26.05	25.23	25.29
4794	NASDAQ	ARTNA	Wed, Dec 9, 2015	25.84	26.05	25.72	25.80
4793	NASDAQ	ARTNA	Tue, Dec 8, 2015	25.99	26.18	25.62	25.99
4792	NASDAQ	ARTNA	Mon, Dec 7, 2015	25.69	26.16	25.65	25.96
4791	NASDAQ	ARTNA	Fri, Dec 4, 2015	25.66	26.00	25.57	25.74
4790	NASDAQ	ARTNA	Thu, Dec 3, 2015	25.86	26.15	25.56	25.65
4789	NASDAQ	ARTNA	Wed, Dec 2, 2015	26.65	26.65	25.82	25.89
4788	NASDAQ	ARTNA	Tue, Dec 1, 2015	26.82	26.82	25.94	26.26
4787	NASDAQ	ARTNA	Mon, Nov 30, 2015	25.85	26.32	25.66	26.21
4786	NASDAQ	ARTNA	Fri, Nov 27, 2015	25.60	25.81	25.21	25.75
4785	NASDAQ	ARTNA	Wed, Nov 25, 2015	25.47	25.60	24.98	25.58
4784	NASDAQ	ARTNA	Tue, Nov 24, 2015	25.22	25.46	24.87	25.46
4783	NASDAQ	ARTNA	Mon, Nov 23, 2015	25.50	25.78	24.97	25.22
4782	NASDAQ	ARTNA	Fri, Nov 20, 2015	25.18	25.50	25.11	25.49
4781	NASDAQ	ARTNA	Thu, Nov 19, 2015	24.99	25.15	24.70	25.07
4780	NASDAQ	ARTNA	Wed, Nov 18, 2015	24.68	24.99	24.24	24.97
4779	NASDAQ	ARTNA	Tue, Nov 17, 2015	24.99	24.99	24.41	24.67
4778	NASDAQ	ARTNA	Mon, Nov 16, 2015	24.67	25.00	24.23	24.99
4777	NASDAQ	ARTNA	Fri, Nov 13, 2015	24.82	25.13	24.63	24.67
4776	NASDAQ	ARTNA	Thu, Nov 12, 2015	24.87	25.05	24.66	24.82
4775	NASDAQ	ARTNA	Wed, Nov 11, 2015	24.53	25.11	24.49	24.74
4774	NASDAQ	ARTNA	Tue, Nov 10, 2015	24.42	24.58	24.07	24.52
4773	NASDAQ	ARTNA	Mon, Nov 9, 2015	24.32	24.80	23.80	24.20
4772	NASDAQ	ARTNA	Fri, Nov 6, 2015	24.34	24.34	23.93	24.31
4771	NASDAQ	ARTNA	Thu, Nov 5, 2015	24.44	24.70	24.27	24.34
4770	NASDAQ	ARTNA	Wed, Nov 4, 2015	24.38	24.53	24.21	24.49
4769	NASDAQ	ARTNA	Tue, Nov 3, 2015	24.38	24.53	24.01	24.23
4768	NASDAQ	ARTNA	Mon, Nov 2, 2015	24.45	24.52	24.10	24.36
4767	NASDAQ	ARTNA	Fri, Oct 30, 2015	24.40	24.54	24.18	24.36
4766	NASDAQ	ARTNA	Thu, Oct 29, 2015	24.67	24.67	24.18	24.47
4765	NASDAQ	ARTNA	Wed, Oct 28, 2015	24.14	24.72	24.14	24.58
4764	NASDAQ	ARTNA	Tue, Oct 27, 2015	24.15	24.53	24.10	24.14
4763	NASDAQ	ARTNA	Mon, Oct 26, 2015	24.99	24.99	24.17	24.24
4762	NASDAQ	ARTNA	Fri, Oct 23, 2015	25.03	25.12	24.64	25.00
4761	NASDAQ	ARTNA	Thu, Oct 22, 2015	24.60	25.45	24.51	25.04
4760	NASDAQ	ARTNA	Wed, Oct 21, 2015	26.40	26.53	24.00	24.79
4759	NASDAQ	ARTNA	Tue, Oct 20, 2015	26.46	26.85	26.30	26.78
4758	NASDAQ	ARTNA	Mon, Oct 19, 2015	26.50	26.78	26.32	26.53
4757	NASDAQ	ARTNA	Fri, Oct 16, 2015	26.50	26.60	26.16	26.52
4756	NASDAQ	ARTNA	Thu, Oct 15, 2015	25.75	26.66	25.67	26.61
4755	NASDAQ	ARTNA	Wed, Oct 14, 2015	25.78	25.94	25.46	25.69
4754	NASDAQ	ARTNA	Tue, Oct 13, 2015	25.78	26.00	25.78	25.79
4753	NASDAQ	ARTNA	Mon, Oct 12, 2015	25.83	25.87	25.68	25.78
4752	NASDAQ	ARTNA	Fri, Oct 9, 2015	25.89	26.16	25.70	25.87
4751	NASDAQ	ARTNA	Thu, Oct 8, 2015	25.60	26.09	25.58	25.85
4750	NASDAQ	ARTNA	Wed, Oct 7, 2015	25.28	25.72	25.19	25.47
4749	NASDAQ	ARTNA	Tue, Oct 6, 2015	25.80	25.80	25.00	25.17
4748	NASDAQ	ARTNA	Mon, Oct 5, 2015	24.39	25.90	24.39	25.84
4747	NASDAQ	ARTNA	Fri, Oct 2, 2015	24.22	24.50	24.16	24.47
4746	NASDAQ	ARTNA	Thu, Oct 1, 2015	24.22	24.30	23.90	24.14
4745	NASDAQ	ARTNA	Wed, Sep 30, 2015	24.27	24.27	24.01	24.14
4744	NASDAQ	ARTNA	Tue, Sep 29, 2015	24.00	24.47	23.96	24.03
4743	NASDAQ	ARTNA	Mon, Sep 28, 2015	23.51	24.20	23.32	23.98
4742	NASDAQ	ARTNA	Fri, Sep 25, 2015	23.45	23.81	23.33	23.59
4741	NASDAQ	ARTNA	Thu, Sep 24, 2015	23.16	23.46	23.06	23.32
4740	NASDAQ	ARTNA	Wed, Sep 23, 2015	23.30	23.30	23.08	23.24
4739	NASDAQ	ARTNA	Tue, Sep 22, 2015	23.37	23.45	22.66	23.14
4738	NASDAQ	ARTNA	Mon, Sep 21, 2015	22.48	23.50	22.48	23.34
4737	NASDAQ	ARTNA	Fri, Sep 18, 2015	22.06	22.50	22.06	22.49
4736	NASDAQ	ARTNA	Thu, Sep 17, 2015	21.98	22.38	21.95	22.26
4735	NASDAQ	ARTNA	Wed, Sep 16, 2015	22.00	22.00	21.91	21.98
4734	NASDAQ	ARTNA	Tue, Sep 15, 2015	21.70	22.00	21.61	21.99
4733	NASDAQ	ARTNA	Mon, Sep 14, 2015	21.63	21.70	21.52	21.70
4732	NASDAQ	ARTNA	Fri, Sep 11, 2015	21.47	21.60	21.32	21.59
4731	NASDAQ	ARTNA	Thu, Sep 10, 2015	21.65	21.67	21.50	21.55
4730	NASDAQ	ARTNA	Wed, Sep 9, 2015	21.78	21.78	21.50	21.62
4729	NASDAQ	ARTNA	Tue, Sep 8, 2015	21.78	21.85	21.59	21.70
4728	NASDAQ	ARTNA	Fri, Sep 4, 2015	21.69	21.92	21.51	21.71
4727	NASDAQ	ARTNA	Thu, Sep 3, 2015	22.10	22.10	21.75	21.80
4726	NASDAQ	ARTNA	Wed, Sep 2, 2015	21.92	22.00	21.78	21.99
4725	NASDAQ	ARTNA	Tue, Sep 1, 2015	21.86	21.99	21.64	21.74
4724	NASDAQ	ARTNA	Mon, Aug 31, 2015	22.13	22.20	21.95	21.99
4723	NASDAQ	ARTNA	Fri, Aug 28, 2015	22.06	22.28	22.02	22.24
4722	NASDAQ	ARTNA	Thu, Aug 27, 2015	22.34	22.34	21.84	22.13
4721	NASDAQ	ARTNA	Wed, Aug 26, 2015	22.37	22.37	21.90	22.22
4720	NASDAQ	ARTNA	Tue, Aug 25, 2015	22.84	22.85	21.83	22.04
4719	NASDAQ	ARTNA	Mon, Aug 24, 2015	22.00	22.59	22.00	22.27
4718	NASDAQ	ARTNA	Fri, Aug 21, 2015	22.29	22.90	22.29	22.48
4717	NASDAQ	ARTNA	Thu, Aug 20, 2015	22.21	22.70	22.13	22.55
4716	NASDAQ	ARTNA	Wed, Aug 19, 2015	22.31	22.49	22.31	22.33
4715	NASDAQ	ARTNA	Tue, Aug 18, 2015	22.50	22.52	22.31	22.37
4714	NASDAQ	ARTNA	Mon, Aug 17, 2015	22.33	22.50	22.31	22.48
4713	NASDAQ	ARTNA	Fri, Aug 14, 2015	22.16	22.47	22.08	22.38
4712	NASDAQ	ARTNA	Thu, Aug 13, 2015	22.07	22.30	21.91	22.10
4711	NASDAQ	ARTNA	Wed, Aug 12, 2015	21.75	22.05	21.75	22.04
4710	NASDAQ	ARTNA	Tue, Aug 11, 2015	21.82	22.05	21.73	21.79
4709	NASDAQ	ARTNA	Mon, Aug 10, 2015	21.98	22.17	21.76	21.88
4708	NASDAQ	ARTNA	Fri, Aug 7, 2015	21.87	22.06	21.85	21.86
4707	NASDAQ	ARTNA	Thu, Aug 6, 2015	22.00	22.00	21.79	21.91
4706	NASDAQ	ARTNA	Wed, Aug 5, 2015	21.69	21.94	21.65	21.86
4705	NASDAQ	ARTNA	Tue, Aug 4, 2015	21.80	21.99	21.55	21.62
4704	NASDAQ	ARTNA	Mon, Aug 3, 2015	21.64	21.96	21.50	21.81
4703	NASDAQ	ARTNA	Fri, Jul 31, 2015	21.55	22.00	21.41	21.57
4702	NASDAQ	ARTNA	Thu, Jul 30, 2015	21.43	21.69	21.35	21.50
4701	NASDAQ	ARTNA	Wed, Jul 29, 2015	21.41	21.66	21.41	21.51
4700	NASDAQ	ARTNA	Tue, Jul 28, 2015	21.57	21.66	21.35	21.45
4699	NASDAQ	ARTNA	Mon, Jul 27, 2015	21.42	21.66	21.33	21.59
4698	NASDAQ	ARTNA	Fri, Jul 24, 2015	21.50	21.84	21.38	21.42
4697	NASDAQ	ARTNA	Thu, Jul 23, 2015	21.90	21.96	21.50	21.53
4696	NASDAQ	ARTNA	Wed, Jul 22, 2015	21.85	22.00	21.80	21.86
4695	NASDAQ	ARTNA	Tue, Jul 21, 2015	21.85	21.93	21.80	21.91
4694	NASDAQ	ARTNA	Mon, Jul 20, 2015	21.87	21.97	21.79	21.85
4693	NASDAQ	ARTNA	Fri, Jul 17, 2015	21.80	21.92	21.70	21.81
4692	NASDAQ	ARTNA	Thu, Jul 16, 2015	21.70	21.84	21.64	21.80
4691	NASDAQ	ARTNA	Wed, Jul 15, 2015	21.72	21.75	21.55	21.64
4690	NASDAQ	ARTNA	Tue, Jul 14, 2015	21.67	21.70	21.56	21.64
4689	NASDAQ	ARTNA	Mon, Jul 13, 2015	21.65	21.69	21.48	21.68
4688	NASDAQ	ARTNA	Fri, Jul 10, 2015	21.65	21.65	21.49	21.64
4687	NASDAQ	ARTNA	Thu, Jul 9, 2015	21.65	21.65	21.31	21.53
4686	NASDAQ	ARTNA	Wed, Jul 8, 2015	21.41	21.75	21.40	21.55
4685	NASDAQ	ARTNA	Tue, Jul 7, 2015	21.40	21.72	21.39	21.50
4684	NASDAQ	ARTNA	Mon, Jul 6, 2015	21.19	21.48	20.95	21.43
4683	NASDAQ	ARTNA	Thu, Jul 2, 2015	21.43	21.48	21.15	21.35
4682	NASDAQ	ARTNA	Wed, Jul 1, 2015	21.21	21.49	21.05	21.32
4681	NASDAQ	ARTNA	Tue, Jun 30, 2015	20.96	21.39	20.96	21.09
4680	NASDAQ	ARTNA	Mon, Jun 29, 2015	20.93	21.33	20.85	20.95
4679	NASDAQ	ARTNA	Fri, Jun 26, 2015	21.03	21.34	20.87	21.04
4678	NASDAQ	ARTNA	Thu, Jun 25, 2015	21.13	21.48	21.01	21.02
4677	NASDAQ	ARTNA	Wed, Jun 24, 2015	21.40	21.54	21.21	21.22
4676	NASDAQ	ARTNA	Tue, Jun 23, 2015	21.31	21.54	21.31	21.46
4675	NASDAQ	ARTNA	Mon, Jun 22, 2015	21.48	21.59	21.35	21.40
4674	NASDAQ	ARTNA	Fri, Jun 19, 2015	21.28	21.64	21.28	21.40
4673	NASDAQ	ARTNA	Thu, Jun 18, 2015	20.97	21.34	20.80	21.33
4672	NASDAQ	ARTNA	Wed, Jun 17, 2015	21.03	21.24	20.81	20.91
4671	NASDAQ	ARTNA	Tue, Jun 16, 2015	21.11	21.29	20.93	20.97
4670	NASDAQ	ARTNA	Mon, Jun 15, 2015	21.33	21.33	20.83	21.08
4669	NASDAQ	ARTNA	Fri, Jun 12, 2015	21.33	21.50	21.26	21.28
4668	NASDAQ	ARTNA	Thu, Jun 11, 2015	21.37	21.47	21.28	21.43
4667	NASDAQ	ARTNA	Wed, Jun 10, 2015	21.12	21.48	21.12	21.35
4666	NASDAQ	ARTNA	Tue, Jun 9, 2015	21.20	21.45	21.08	21.09
4665	NASDAQ	ARTNA	Mon, Jun 8, 2015	21.38	21.58	21.21	21.26
4664	NASDAQ	ARTNA	Fri, Jun 5, 2015	21.36	21.54	21.36	21.40
4663	NASDAQ	ARTNA	Thu, Jun 4, 2015	21.33	21.58	21.30	21.50
4662	NASDAQ	ARTNA	Wed, Jun 3, 2015	21.33	21.59	21.28	21.43
4661	NASDAQ	ARTNA	Tue, Jun 2, 2015	21.43	21.69	21.36	21.39
4660	NASDAQ	ARTNA	Mon, Jun 1, 2015	21.57	21.69	21.40	21.54
4659	NASDAQ	ARTNA	Fri, May 29, 2015	21.36	21.62	21.30	21.32
4658	NASDAQ	ARTNA	Thu, May 28, 2015	21.50	21.60	21.35	21.46
4657	NASDAQ	ARTNA	Wed, May 27, 2015	21.43	21.65	21.36	21.48
4656	NASDAQ	ARTNA	Tue, May 26, 2015	21.51	21.68	21.35	21.41
4655	NASDAQ	ARTNA	Fri, May 22, 2015	21.69	21.78	21.51	21.51
4654	NASDAQ	ARTNA	Thu, May 21, 2015	21.56	21.79	21.36	21.58
4653	NASDAQ	ARTNA	Wed, May 20, 2015	21.60	21.71	21.42	21.56
4652	NASDAQ	ARTNA	Tue, May 19, 2015	21.55	21.75	21.40	21.49
4651	NASDAQ	ARTNA	Mon, May 18, 2015	21.47	21.74	21.40	21.47
4650	NASDAQ	ARTNA	Fri, May 15, 2015	21.33	21.49	21.08	21.40
4649	NASDAQ	ARTNA	Thu, May 14, 2015	20.80	21.32	20.90	21.32
4648	NASDAQ	ARTNA	Wed, May 13, 2015	20.99	21.21	20.70	20.78
4647	NASDAQ	ARTNA	Tue, May 12, 2015	21.19	21.19	20.80	20.93
4646	NASDAQ	ARTNA	Mon, May 11, 2015	21.18	21.50	21.10	21.19
4645	NASDAQ	ARTNA	Fri, May 8, 2015	21.45	21.46	21.11	21.18
4644	NASDAQ	ARTNA	Thu, May 7, 2015	21.13	21.74	21.13	21.19
4643	NASDAQ	ARTNA	Wed, May 6, 2015	21.39	21.43	21.22	21.31
4642	NASDAQ	ARTNA	Tue, May 5, 2015	21.51	21.63	21.41	21.42
4641	NASDAQ	ARTNA	Mon, May 4, 2015	21.68	21.81	21.50	21.60
4640	NASDAQ	ARTNA	Fri, May 1, 2015	21.71	21.79	21.50	21.63
4639	NASDAQ	ARTNA	Thu, Apr 30, 2015	21.92	21.92	21.54	21.54
4638	NASDAQ	ARTNA	Wed, Apr 29, 2015	21.98	22.15	21.79	21.92
4637	NASDAQ	ARTNA	Tue, Apr 28, 2015	21.82	22.19	21.82	22.04
4636	NASDAQ	ARTNA	Mon, Apr 27, 2015	22.10	22.25	21.74	21.89
4635	NASDAQ	ARTNA	Fri, Apr 24, 2015	21.67	22.16	21.67	22.16
4634	NASDAQ	ARTNA	Thu, Apr 23, 2015	21.79	21.99	21.52	21.67
4633	NASDAQ	ARTNA	Wed, Apr 22, 2015	22.01	22.33	21.85	21.89
4632	NASDAQ	ARTNA	Tue, Apr 21, 2015	22.06	22.12	21.97	22.04
4631	NASDAQ	ARTNA	Mon, Apr 20, 2015	21.73	22.06	21.73	22.04
4630	NASDAQ	ARTNA	Fri, Apr 17, 2015	21.65	21.96	21.64	21.64
4629	NASDAQ	ARTNA	Thu, Apr 16, 2015	21.65	21.88	21.65	21.78
4628	NASDAQ	ARTNA	Wed, Apr 15, 2015	21.75	22.06	21.70	21.78
4627	NASDAQ	ARTNA	Tue, Apr 14, 2015	21.78	21.80	21.63	21.74
4626	NASDAQ	ARTNA	Mon, Apr 13, 2015	21.62	21.97	21.62	21.66
4625	NASDAQ	ARTNA	Fri, Apr 10, 2015	21.70	21.82	21.50	21.60
4624	NASDAQ	ARTNA	Thu, Apr 9, 2015	22.01	22.05	21.53	21.65
4623	NASDAQ	ARTNA	Wed, Apr 8, 2015	21.89	22.06	21.53	21.87
4622	NASDAQ	ARTNA	Tue, Apr 7, 2015	22.02	22.06	21.71	21.74
4621	NASDAQ	ARTNA	Mon, Apr 6, 2015	21.65	22.05	21.65	22.02
4620	NASDAQ	ARTNA	Thu, Apr 2, 2015	22.02	22.05	21.56	21.60
4619	NASDAQ	ARTNA	Wed, Apr 1, 2015	21.54	21.94	21.30	21.94
4618	NASDAQ	ARTNA	Tue, Mar 31, 2015	20.93	21.59	20.93	21.39
4617	NASDAQ	ARTNA	Mon, Mar 30, 2015	21.28	21.69	20.86	20.95
4616	NASDAQ	ARTNA	Fri, Mar 27, 2015	21.47	21.50	21.04	21.21
4615	NASDAQ	ARTNA	Thu, Mar 26, 2015	21.31	21.88	21.31	21.38
4614	NASDAQ	ARTNA	Wed, Mar 25, 2015	21.84	22.04	21.31	21.33
4613	NASDAQ	ARTNA	Tue, Mar 24, 2015	21.76	21.82	21.50	21.50
4612	NASDAQ	ARTNA	Mon, Mar 23, 2015	21.55	21.87	21.55	21.77
4611	NASDAQ	ARTNA	Fri, Mar 20, 2015	21.49	21.56	21.31	21.55
4610	NASDAQ	ARTNA	Thu, Mar 19, 2015	21.08	21.41	21.03	21.35
4609	NASDAQ	ARTNA	Wed, Mar 18, 2015	20.50	21.21	20.45	21.13
4608	NASDAQ	ARTNA	Tue, Mar 17, 2015	20.22	20.54	20.22	20.48
4607	NASDAQ	ARTNA	Mon, Mar 16, 2015	20.34	20.50	20.18	20.27
4606	NASDAQ	ARTNA	Fri, Mar 13, 2015	20.29	20.53	20.29	20.35
4605	NASDAQ	ARTNA	Thu, Mar 12, 2015	20.25	20.59	20.10	20.39
4604	NASDAQ	ARTNA	Wed, Mar 11, 2015	20.45	20.73	20.00	20.00
4603	NASDAQ	ARTNA	Tue, Mar 10, 2015	20.71	20.90	20.46	20.48
4602	NASDAQ	ARTNA	Mon, Mar 9, 2015	20.82	21.00	20.66	20.81
4601	NASDAQ	ARTNA	Fri, Mar 6, 2015	21.10	21.24	20.79	20.81
4600	NASDAQ	ARTNA	Thu, Mar 5, 2015	21.21	21.48	21.11	21.16
4599	NASDAQ	ARTNA	Wed, Mar 4, 2015	21.41	21.45	21.05	21.09
4598	NASDAQ	ARTNA	Tue, Mar 3, 2015	21.50	21.65	21.38	21.44
4597	NASDAQ	ARTNA	Mon, Mar 2, 2015	21.69	21.70	21.45	21.59
4596	NASDAQ	ARTNA	Fri, Feb 27, 2015	21.75	21.89	21.70	21.72
4595	NASDAQ	ARTNA	Thu, Feb 26, 2015	21.77	21.88	21.67	21.75
4594	NASDAQ	ARTNA	Wed, Feb 25, 2015	21.63	21.78	21.59	21.71
4593	NASDAQ	ARTNA	Tue, Feb 24, 2015	21.54	21.74	21.47	21.72
4592	NASDAQ	ARTNA	Mon, Feb 23, 2015	21.68	21.93	21.26	21.57
4591	NASDAQ	ARTNA	Fri, Feb 20, 2015	21.84	21.89	21.49	21.59
4590	NASDAQ	ARTNA	Thu, Feb 19, 2015	21.83	22.01	21.76	21.84
4589	NASDAQ	ARTNA	Wed, Feb 18, 2015	21.57	21.91	21.57	21.79
4588	NASDAQ	ARTNA	Tue, Feb 17, 2015	21.61	21.83	21.53	21.55
4587	NASDAQ	ARTNA	Fri, Feb 13, 2015	21.76	21.93	21.60	21.61
4586	NASDAQ	ARTNA	Thu, Feb 12, 2015	21.70	21.87	21.61	21.87
4585	NASDAQ	ARTNA	Wed, Feb 11, 2015	21.66	21.76	21.60	21.62
4584	NASDAQ	ARTNA	Tue, Feb 10, 2015	21.74	21.74	21.58	21.62
4583	NASDAQ	ARTNA	Mon, Feb 9, 2015	21.83	22.11	21.54	21.55
4582	NASDAQ	ARTNA	Fri, Feb 6, 2015	22.52	22.59	22.00	22.01
4581	NASDAQ	ARTNA	Thu, Feb 5, 2015	22.42	22.69	22.42	22.49
4580	NASDAQ	ARTNA	Wed, Feb 4, 2015	22.48	22.68	22.32	22.38
4579	NASDAQ	ARTNA	Tue, Feb 3, 2015	22.30	22.66	22.24	22.63
4578	NASDAQ	ARTNA	Mon, Feb 2, 2015	22.25	22.43	22.05	22.30
4577	NASDAQ	ARTNA	Fri, Jan 30, 2015	22.49	22.66	22.06	22.15
4576	NASDAQ	ARTNA	Thu, Jan 29, 2015	22.33	22.66	22.33	22.60
4575	NASDAQ	ARTNA	Wed, Jan 28, 2015	22.32	22.51	22.05	22.30
4574	NASDAQ	ARTNA	Tue, Jan 27, 2015	22.26	22.52	22.26	22.30
4573	NASDAQ	ARTNA	Mon, Jan 26, 2015	22.50	22.60	22.25	22.39
4572	NASDAQ	ARTNA	Fri, Jan 23, 2015	22.27	22.69	22.23	22.53
4571	NASDAQ	ARTNA	Thu, Jan 22, 2015	22.36	22.38	22.15	22.32
4570	NASDAQ	ARTNA	Wed, Jan 21, 2015	22.51	22.57	22.22	22.30
4569	NASDAQ	ARTNA	Tue, Jan 20, 2015	22.72	22.76	22.31	22.61
4568	NASDAQ	ARTNA	Fri, Jan 16, 2015	22.42	22.79	22.31	22.72
4567	NASDAQ	ARTNA	Thu, Jan 15, 2015	22.35	22.67	21.86	22.61
4566	NASDAQ	ARTNA	Wed, Jan 14, 2015	22.16	22.51	22.03	22.46
4565	NASDAQ	ARTNA	Tue, Jan 13, 2015	22.15	22.47	22.07	22.23
4564	NASDAQ	ARTNA	Mon, Jan 12, 2015	22.28	22.38	22.01	22.15
4563	NASDAQ	ARTNA	Fri, Jan 9, 2015	22.42	22.55	22.11	22.20
4562	NASDAQ	ARTNA	Thu, Jan 8, 2015	22.39	22.50	22.25	22.50
4561	NASDAQ	ARTNA	Wed, Jan 7, 2015	22.27	22.35	22.16	22.34
4560	NASDAQ	ARTNA	Tue, Jan 6, 2015	22.40	22.69	22.17	22.19
4559	NASDAQ	ARTNA	Mon, Jan 5, 2015	22.41	22.66	22.18	22.49
4558	NASDAQ	ARTNA	Fri, Jan 2, 2015	22.63	22.73	22.23	22.49
4557	NASDAQ	ARTNA	Wed, Dec 31, 2014	22.68	22.78	22.26	22.59
4556	NASDAQ	ARTNA	Tue, Dec 30, 2014	22.79	22.79	22.54	22.73
4555	NASDAQ	ARTNA	Mon, Dec 29, 2014	22.27	22.84	22.27	22.80
4554	NASDAQ	ARTNA	Fri, Dec 26, 2014	22.42	22.49	22.04	22.17
4553	NASDAQ	ARTNA	Wed, Dec 24, 2014	22.10	22.46	21.83	22.37
4552	NASDAQ	ARTNA	Tue, Dec 23, 2014	22.33	22.42	21.82	22.11
4551	NASDAQ	ARTNA	Mon, Dec 22, 2014	22.05	22.22	21.79	22.12
4550	NASDAQ	ARTNA	Fri, Dec 19, 2014	22.52	22.52	21.89	22.15
4549	NASDAQ	ARTNA	Thu, Dec 18, 2014	22.25	22.84	22.25	22.59
4548	NASDAQ	ARTNA	Wed, Dec 17, 2014	21.99	22.19	21.92	22.17
4547	NASDAQ	ARTNA	Tue, Dec 16, 2014	21.78	22.14	21.78	21.96
4546	NASDAQ	ARTNA	Mon, Dec 15, 2014	21.69	21.92	21.55	21.74
4545	NASDAQ	ARTNA	Fri, Dec 12, 2014	21.75	21.97	21.42	21.66
4544	NASDAQ	ARTNA	Thu, Dec 11, 2014	21.92	22.15	21.68	21.93
4543	NASDAQ	ARTNA	Wed, Dec 10, 2014	21.90	22.05	21.43	21.91
4542	NASDAQ	ARTNA	Tue, Dec 9, 2014	21.45	22.00	21.31	21.99
4541	NASDAQ	ARTNA	Mon, Dec 8, 2014	21.49	21.80	21.35	21.42
4540	NASDAQ	ARTNA	Fri, Dec 5, 2014	21.50	21.99	21.25	21.55
4539	NASDAQ	ARTNA	Thu, Dec 4, 2014	21.65	21.70	21.46	21.51
4538	NASDAQ	ARTNA	Wed, Dec 3, 2014	21.78	21.83	21.34	21.72
4537	NASDAQ	ARTNA	Tue, Dec 2, 2014	21.32	22.03	21.32	21.50
4536	NASDAQ	ARTNA	Mon, Dec 1, 2014	21.58	21.62	21.28	21.31
4535	NASDAQ	ARTNA	Fri, Nov 28, 2014	21.82	21.82	21.46	21.48
4534	NASDAQ	ARTNA	Wed, Nov 26, 2014	21.68	21.82	21.56	21.80
4533	NASDAQ	ARTNA	Tue, Nov 25, 2014	21.45	22.18	21.41	21.53
4532	NASDAQ	ARTNA	Mon, Nov 24, 2014	21.57	21.87	21.28	21.49
4531	NASDAQ	ARTNA	Fri, Nov 21, 2014	22.02	22.35	21.28	21.44
4530	NASDAQ	ARTNA	Thu, Nov 20, 2014	21.91	21.91	21.47	21.67
4529	NASDAQ	ARTNA	Wed, Nov 19, 2014	22.52	22.52	21.88	21.91
4528	NASDAQ	ARTNA	Tue, Nov 18, 2014	22.36	22.69	22.35	22.49
4527	NASDAQ	ARTNA	Mon, Nov 17, 2014	22.16	22.40	22.16	22.25
4526	NASDAQ	ARTNA	Fri, Nov 14, 2014	22.46	22.47	22.05	22.25
4525	NASDAQ	ARTNA	Thu, Nov 13, 2014	22.35	22.49	22.25	22.40
4524	NASDAQ	ARTNA	Wed, Nov 12, 2014	22.48	22.60	22.10	22.40
4523	NASDAQ	ARTNA	Tue, Nov 11, 2014	22.56	22.60	22.12	22.55
4522	NASDAQ	ARTNA	Mon, Nov 10, 2014	22.40	22.56	22.12	22.54
4521	NASDAQ	ARTNA	Fri, Nov 7, 2014	22.44	22.45	21.97	22.40
4520	NASDAQ	ARTNA	Thu, Nov 6, 2014	21.90	22.43	21.79	22.34
4519	NASDAQ	ARTNA	Wed, Nov 5, 2014	21.85	22.09	21.60	21.85
4518	NASDAQ	ARTNA	Tue, Nov 4, 2014	22.07	22.23	21.92	21.99
4517	NASDAQ	ARTNA	Mon, Nov 3, 2014	22.46	22.46	21.98	22.18
4516	NASDAQ	ARTNA	Fri, Oct 31, 2014	22.53	22.74	22.05	22.27
4515	NASDAQ	ARTNA	Thu, Oct 30, 2014	22.07	22.79	21.78	22.36
4514	NASDAQ	ARTNA	Wed, Oct 29, 2014	22.03	22.25	21.88	22.07
4513	NASDAQ	ARTNA	Tue, Oct 28, 2014	21.78	22.29	21.81	22.06
4512	NASDAQ	ARTNA	Mon, Oct 27, 2014	21.54	21.83	21.46	21.79
4511	NASDAQ	ARTNA	Fri, Oct 24, 2014	21.52	21.66	21.44	21.44
4510	NASDAQ	ARTNA	Thu, Oct 23, 2014	21.55	21.65	21.26	21.59
4509	NASDAQ	ARTNA	Wed, Oct 22, 2014	21.67	21.95	21.36	21.37
4508	NASDAQ	ARTNA	Tue, Oct 21, 2014	21.55	21.91	21.38	21.57
4507	NASDAQ	ARTNA	Mon, Oct 20, 2014	21.20	21.76	21.17	21.55
4506	NASDAQ	ARTNA	Fri, Oct 17, 2014	21.91	21.91	21.22	21.24
4505	NASDAQ	ARTNA	Thu, Oct 16, 2014	21.47	21.95	21.08	21.70
4504	NASDAQ	ARTNA	Wed, Oct 15, 2014	21.43	21.70	21.34	21.66
4503	NASDAQ	ARTNA	Tue, Oct 14, 2014	21.35	21.59	20.96	21.58
4502	NASDAQ	ARTNA	Mon, Oct 13, 2014	20.54	21.33	20.54	21.17
4501	NASDAQ	ARTNA	Fri, Oct 10, 2014	20.10	20.90	20.08	20.59
4500	NASDAQ	ARTNA	Thu, Oct 9, 2014	20.41	20.45	19.96	20.22
4499	NASDAQ	ARTNA	Wed, Oct 8, 2014	19.98	20.58	19.91	20.36
4498	NASDAQ	ARTNA	Tue, Oct 7, 2014	19.91	20.28	19.91	19.93
4497	NASDAQ	ARTNA	Mon, Oct 6, 2014	20.24	20.36	19.98	19.99
4496	NASDAQ	ARTNA	Fri, Oct 3, 2014	20.33	20.39	19.95	20.22
4495	NASDAQ	ARTNA	Thu, Oct 2, 2014	19.87	20.44	19.87	20.19
4494	NASDAQ	ARTNA	Wed, Oct 1, 2014	20.19	20.45	19.85	19.87
4493	NASDAQ	ARTNA	Tue, Sep 30, 2014	20.40	20.64	20.14	20.14
4492	NASDAQ	ARTNA	Mon, Sep 29, 2014	20.30	20.48	20.23	20.40
4491	NASDAQ	ARTNA	Fri, Sep 26, 2014	20.33	20.53	20.32	20.32
4490	NASDAQ	ARTNA	Thu, Sep 25, 2014	20.32	20.50	20.30	20.32
4489	NASDAQ	ARTNA	Wed, Sep 24, 2014	20.40	20.44	20.25	20.40
4488	NASDAQ	ARTNA	Tue, Sep 23, 2014	20.15	20.51	20.15	20.28
4487	NASDAQ	ARTNA	Mon, Sep 22, 2014	20.18	20.47	20.01	20.21
4486	NASDAQ	ARTNA	Fri, Sep 19, 2014	20.67	20.67	20.13	20.25
4485	NASDAQ	ARTNA	Thu, Sep 18, 2014	20.60	20.80	20.51	20.64
4484	NASDAQ	ARTNA	Wed, Sep 17, 2014	20.78	20.79	20.50	20.56
4483	NASDAQ	ARTNA	Tue, Sep 16, 2014	20.69	21.00	20.69	20.74
4482	NASDAQ	ARTNA	Mon, Sep 15, 2014	20.82	20.90	20.68	20.71
4481	NASDAQ	ARTNA	Fri, Sep 12, 2014	21.21	21.24	20.83	20.83
4480	NASDAQ	ARTNA	Thu, Sep 11, 2014	20.98	21.29	20.84	21.20
4479	NASDAQ	ARTNA	Wed, Sep 10, 2014	20.92	21.19	20.83	21.06
4478	NASDAQ	ARTNA	Tue, Sep 9, 2014	20.97	21.05	20.90	20.92
4477	NASDAQ	ARTNA	Mon, Sep 8, 2014	20.95	21.02	20.95	21.01
4476	NASDAQ	ARTNA	Fri, Sep 5, 2014	20.90	21.19	20.90	20.98
4475	NASDAQ	ARTNA	Thu, Sep 4, 2014	20.96	21.13	20.93	20.93
4474	NASDAQ	ARTNA	Wed, Sep 3, 2014	21.17	21.31	20.87	20.97
4473	NASDAQ	ARTNA	Tue, Sep 2, 2014	21.27	21.34	21.00	21.17
4472	NASDAQ	ARTNA	Fri, Aug 29, 2014	20.83	21.23	20.83	21.21
4471	NASDAQ	ARTNA	Thu, Aug 28, 2014	20.90	21.06	20.80	20.83
4470	NASDAQ	ARTNA	Wed, Aug 27, 2014	21.05	21.13	20.90	20.92
4469	NASDAQ	ARTNA	Tue, Aug 26, 2014	20.97	21.15	20.90	21.08
4468	NASDAQ	ARTNA	Mon, Aug 25, 2014	21.18	21.28	20.95	21.05
4467	NASDAQ	ARTNA	Fri, Aug 22, 2014	21.23	21.36	20.98	21.08
4466	NASDAQ	ARTNA	Thu, Aug 21, 2014	21.02	21.19	21.01	21.13
4465	NASDAQ	ARTNA	Wed, Aug 20, 2014	21.07	21.24	21.00	21.15
4464	NASDAQ	ARTNA	Tue, Aug 19, 2014	21.21	21.38	21.00	21.11
4463	NASDAQ	ARTNA	Mon, Aug 18, 2014	21.21	21.39	21.00	21.29
4462	NASDAQ	ARTNA	Fri, Aug 15, 2014	21.48	21.55	20.95	21.19
4461	NASDAQ	ARTNA	Thu, Aug 14, 2014	21.22	21.36	21.12	21.36
4460	NASDAQ	ARTNA	Wed, Aug 13, 2014	21.03	21.34	21.00	21.15
4459	NASDAQ	ARTNA	Tue, Aug 12, 2014	21.27	21.30	20.78	21.06
4458	NASDAQ	ARTNA	Mon, Aug 11, 2014	21.35	21.54	21.22	21.36
4457	NASDAQ	ARTNA	Fri, Aug 8, 2014	21.29	21.40	21.21	21.39
4456	NASDAQ	ARTNA	Thu, Aug 7, 2014	21.51	22.00	21.35	21.40
4455	NASDAQ	ARTNA	Wed, Aug 6, 2014	21.65	21.79	21.56	21.67
4454	NASDAQ	ARTNA	Tue, Aug 5, 2014	21.78	22.01	21.50	21.65
4453	NASDAQ	ARTNA	Mon, Aug 4, 2014	21.86	21.84	21.53	21.75
4452	NASDAQ	ARTNA	Fri, Aug 1, 2014	21.83	22.06	21.66	21.73
4451	NASDAQ	ARTNA	Thu, Jul 31, 2014	21.73	21.96	21.61	21.79
4450	NASDAQ	ARTNA	Wed, Jul 30, 2014	21.85	21.98	21.74	21.86
4449	NASDAQ	ARTNA	Tue, Jul 29, 2014	21.72	21.99	21.58	21.84
4448	NASDAQ	ARTNA	Mon, Jul 28, 2014	21.65	21.82	21.57	21.72
4447	NASDAQ	ARTNA	Fri, Jul 25, 2014	21.84	21.95	21.51	21.67
4446	NASDAQ	ARTNA	Thu, Jul 24, 2014	21.98	22.15	21.83	21.85
4445	NASDAQ	ARTNA	Wed, Jul 23, 2014	21.87	22.08	21.78	22.00
4444	NASDAQ	ARTNA	Tue, Jul 22, 2014	21.79	22.02	21.79	21.93
4443	NASDAQ	ARTNA	Mon, Jul 21, 2014	21.44	21.85	21.44	21.74
4442	NASDAQ	ARTNA	Fri, Jul 18, 2014	21.22	21.67	21.22	21.60
4441	NASDAQ	ARTNA	Thu, Jul 17, 2014	21.37	21.57	21.25	21.26
4440	NASDAQ	ARTNA	Wed, Jul 16, 2014	21.48	21.70	21.37	21.39
4439	NASDAQ	ARTNA	Tue, Jul 15, 2014	21.66	21.74	21.37	21.42
4438	NASDAQ	ARTNA	Mon, Jul 14, 2014	21.72	21.89	21.54	21.64
4437	NASDAQ	ARTNA	Fri, Jul 11, 2014	21.32	21.51	21.30	21.45
4436	NASDAQ	ARTNA	Thu, Jul 10, 2014	21.40	21.65	21.25	21.38
4435	NASDAQ	ARTNA	Wed, Jul 9, 2014	21.91	22.07	21.45	21.50
4434	NASDAQ	ARTNA	Tue, Jul 8, 2014	22.15	22.46	21.84	21.91
4433	NASDAQ	ARTNA	Mon, Jul 7, 2014	22.48	22.48	22.16	22.16
4432	NASDAQ	ARTNA	Thu, Jul 3, 2014	22.72	22.74	22.40	22.40
4431	NASDAQ	ARTNA	Wed, Jul 2, 2014	22.63	22.80	22.52	22.61
4430	NASDAQ	ARTNA	Tue, Jul 1, 2014	22.45	22.85	22.45	22.70
4429	NASDAQ	ARTNA	Mon, Jun 30, 2014	22.45	22.59	22.40	22.48
4428	NASDAQ	ARTNA	Fri, Jun 27, 2014	22.52	22.75	22.46	22.48
4427	NASDAQ	ARTNA	Thu, Jun 26, 2014	22.66	22.70	22.40	22.53
4426	NASDAQ	ARTNA	Wed, Jun 25, 2014	22.42	22.78	22.40	22.68
4425	NASDAQ	ARTNA	Tue, Jun 24, 2014	22.52	22.75	22.41	22.42
4424	NASDAQ	ARTNA	Mon, Jun 23, 2014	22.53	22.79	22.38	22.40
4423	NASDAQ	ARTNA	Fri, Jun 20, 2014	22.45	22.79	22.33	22.45
4422	NASDAQ	ARTNA	Thu, Jun 19, 2014	22.39	22.55	22.20	22.38
4421	NASDAQ	ARTNA	Wed, Jun 18, 2014	22.16	22.38	22.15	22.30
4420	NASDAQ	ARTNA	Tue, Jun 17, 2014	22.15	22.30	22.15	22.22
4419	NASDAQ	ARTNA	Mon, Jun 16, 2014	22.16	22.30	22.03	22.15
4418	NASDAQ	ARTNA	Fri, Jun 13, 2014	22.32	22.35	22.10	22.27
4417	NASDAQ	ARTNA	Thu, Jun 12, 2014	22.29	22.36	22.11	22.28
4416	NASDAQ	ARTNA	Wed, Jun 11, 2014	22.53	22.57	22.20	22.39
4415	NASDAQ	ARTNA	Tue, Jun 10, 2014	22.50	22.78	22.34	22.61
4414	NASDAQ	ARTNA	Mon, Jun 9, 2014	22.46	22.78	22.39	22.62
4413	NASDAQ	ARTNA	Fri, Jun 6, 2014	22.57	22.59	22.04	22.58
4412	NASDAQ	ARTNA	Thu, Jun 5, 2014	21.96	22.56	21.96	22.51
4411	NASDAQ	ARTNA	Wed, Jun 4, 2014	21.75	22.07	21.57	22.01
4410	NASDAQ	ARTNA	Tue, Jun 3, 2014	21.90	22.13	21.75	21.80
4409	NASDAQ	ARTNA	Mon, Jun 2, 2014	22.49	22.49	21.96	22.05
4408	NASDAQ	ARTNA	Fri, May 30, 2014	22.34	22.49	22.20	22.38
4407	NASDAQ	ARTNA	Thu, May 29, 2014	22.20	22.39	21.95	22.24
4406	NASDAQ	ARTNA	Wed, May 28, 2014	22.39	22.36	21.96	22.25
4405	NASDAQ	ARTNA	Tue, May 27, 2014	22.06	22.48	21.96	22.46
4404	NASDAQ	ARTNA	Fri, May 23, 2014	21.70	22.14	21.54	22.09
4403	NASDAQ	ARTNA	Thu, May 22, 2014	21.48	21.70	21.33	21.60
4402	NASDAQ	ARTNA	Wed, May 21, 2014	21.43	21.59	21.32	21.44
4401	NASDAQ	ARTNA	Tue, May 20, 2014	21.51	21.67	21.03	21.36
4400	NASDAQ	ARTNA	Mon, May 19, 2014	21.53	21.63	21.40	21.63
4399	NASDAQ	ARTNA	Fri, May 16, 2014	21.22	21.53	21.15	21.51
4398	NASDAQ	ARTNA	Thu, May 15, 2014	21.11	21.35	21.04	21.27
4397	NASDAQ	ARTNA	Wed, May 14, 2014	21.69	21.84	21.11	21.11
4396	NASDAQ	ARTNA	Tue, May 13, 2014	21.78	21.92	21.62	21.69
4395	NASDAQ	ARTNA	Mon, May 12, 2014	21.49	21.94	21.49	21.89
4394	NASDAQ	ARTNA	Fri, May 9, 2014	21.50	21.67	21.41	21.44
4393	NASDAQ	ARTNA	Thu, May 8, 2014	21.67	21.70	21.50	21.53
4392	NASDAQ	ARTNA	Wed, May 7, 2014	21.74	21.94	21.62	21.86
4391	NASDAQ	ARTNA	Tue, May 6, 2014	21.80	21.83	21.60	21.60
4390	NASDAQ	ARTNA	Mon, May 5, 2014	21.71	21.94	21.70	21.80
4389	NASDAQ	ARTNA	Fri, May 2, 2014	21.80	21.95	21.61	21.73
4388	NASDAQ	ARTNA	Thu, May 1, 2014	21.94	22.02	21.65	21.80
4387	NASDAQ	ARTNA	Wed, Apr 30, 2014	22.09	22.13	21.99	22.10
4386	NASDAQ	ARTNA	Tue, Apr 29, 2014	22.11	22.24	21.89	22.06
4385	NASDAQ	ARTNA	Mon, Apr 28, 2014	22.05	22.11	21.85	22.08
4384	NASDAQ	ARTNA	Fri, Apr 25, 2014	22.16	22.38	22.01	22.03
4383	NASDAQ	ARTNA	Thu, Apr 24, 2014	22.33	22.52	22.16	22.23
4382	NASDAQ	ARTNA	Wed, Apr 23, 2014	22.43	22.64	22.22	22.26
4381	NASDAQ	ARTNA	Tue, Apr 22, 2014	22.53	22.55	22.30	22.53
4380	NASDAQ	ARTNA	Mon, Apr 21, 2014	22.48	22.62	22.40	22.59
4379	NASDAQ	ARTNA	Thu, Apr 17, 2014	22.39	22.59	22.33	22.52
4378	NASDAQ	ARTNA	Wed, Apr 16, 2014	22.37	22.49	22.26	22.48
4377	NASDAQ	ARTNA	Tue, Apr 15, 2014	22.22	22.39	21.99	22.31
4376	NASDAQ	ARTNA	Mon, Apr 14, 2014	22.29	22.38	22.08	22.08
4375	NASDAQ	ARTNA	Fri, Apr 11, 2014	22.06	22.37	22.06	22.15
4374	NASDAQ	ARTNA	Thu, Apr 10, 2014	22.23	22.36	22.05	22.21
4373	NASDAQ	ARTNA	Wed, Apr 9, 2014	22.40	22.48	22.17	22.32
4372	NASDAQ	ARTNA	Tue, Apr 8, 2014	22.24	22.46	22.03	22.36
4371	NASDAQ	ARTNA	Mon, Apr 7, 2014	22.00	22.24	21.90	22.20
4370	NASDAQ	ARTNA	Fri, Apr 4, 2014	22.42	22.42	21.90	22.06
4369	NASDAQ	ARTNA	Thu, Apr 3, 2014	22.29	22.44	22.24	22.28
4368	NASDAQ	ARTNA	Wed, Apr 2, 2014	22.33	22.41	22.23	22.35
4367	NASDAQ	ARTNA	Tue, Apr 1, 2014	22.38	22.59	22.07	22.31
4366	NASDAQ	ARTNA	Mon, Mar 31, 2014	22.33	22.63	22.24	22.46
4365	NASDAQ	ARTNA	Fri, Mar 28, 2014	22.25	22.40	22.19	22.30
4364	NASDAQ	ARTNA	Thu, Mar 27, 2014	22.29	22.41	22.19	22.28
4363	NASDAQ	ARTNA	Wed, Mar 26, 2014	22.43	22.48	22.27	22.27
4362	NASDAQ	ARTNA	Tue, Mar 25, 2014	22.35	22.49	22.28	22.43
4361	NASDAQ	ARTNA	Mon, Mar 24, 2014	22.45	22.48	22.15	22.29
4360	NASDAQ	ARTNA	Fri, Mar 21, 2014	22.43	22.53	22.17	22.49
4359	NASDAQ	ARTNA	Thu, Mar 20, 2014	22.13	22.43	22.13	22.41
4358	NASDAQ	ARTNA	Wed, Mar 19, 2014	22.23	22.32	22.11	22.29
4357	NASDAQ	ARTNA	Tue, Mar 18, 2014	22.17	22.32	22.10	22.32
4356	NASDAQ	ARTNA	Mon, Mar 17, 2014	22.54	22.68	22.17	22.24
4355	NASDAQ	ARTNA	Fri, Mar 14, 2014	22.20	22.67	22.20	22.49
4354	NASDAQ	ARTNA	Thu, Mar 13, 2014	22.48	22.55	22.17	22.19
4353	NASDAQ	ARTNA	Wed, Mar 12, 2014	22.27	22.56	22.15	22.56
4352	NASDAQ	ARTNA	Tue, Mar 11, 2014	22.53	22.63	22.30	22.43
4351	NASDAQ	ARTNA	Mon, Mar 10, 2014	22.29	22.57	22.15	22.57
4350	NASDAQ	ARTNA	Fri, Mar 7, 2014	22.45	22.45	22.17	22.42
4349	NASDAQ	ARTNA	Thu, Mar 6, 2014	22.40	22.48	21.95	22.29
4348	NASDAQ	ARTNA	Wed, Mar 5, 2014	22.32	22.49	21.97	22.44
4347	NASDAQ	ARTNA	Tue, Mar 4, 2014	21.98	22.48	21.80	22.45
4346	NASDAQ	ARTNA	Mon, Mar 3, 2014	21.64	22.03	21.52	21.82
4345	NASDAQ	ARTNA	Fri, Feb 28, 2014	21.82	22.13	21.61	21.76
4344	NASDAQ	ARTNA	Thu, Feb 27, 2014	21.84	21.84	21.48	21.79
4343	NASDAQ	ARTNA	Wed, Feb 26, 2014	22.28	22.28	21.72	21.96
4342	NASDAQ	ARTNA	Tue, Feb 25, 2014	22.18	22.50	22.07	22.32
4341	NASDAQ	ARTNA	Mon, Feb 24, 2014	22.33	22.52	22.19	22.25
4340	NASDAQ	ARTNA	Fri, Feb 21, 2014	22.43	22.49	22.17	22.37
4339	NASDAQ	ARTNA	Thu, Feb 20, 2014	22.05	22.38	22.01	22.37
4338	NASDAQ	ARTNA	Wed, Feb 19, 2014	22.18	22.39	22.10	22.10
4337	NASDAQ	ARTNA	Tue, Feb 18, 2014	21.98	22.21	21.95	22.18
4336	NASDAQ	ARTNA	Fri, Feb 14, 2014	22.14	22.15	21.69	22.05
4335	NASDAQ	ARTNA	Thu, Feb 13, 2014	21.91	22.15	21.91	22.09
4334	NASDAQ	ARTNA	Wed, Feb 12, 2014	22.03	22.13	21.91	22.10
4333	NASDAQ	ARTNA	Tue, Feb 11, 2014	21.74	22.14	21.73	22.08
4332	NASDAQ	ARTNA	Mon, Feb 10, 2014	21.51	21.78	21.32	21.78
4331	NASDAQ	ARTNA	Fri, Feb 7, 2014	21.63	21.73	21.25	21.61
4330	NASDAQ	ARTNA	Thu, Feb 6, 2014	21.94	21.97	21.58	21.65
4329	NASDAQ	ARTNA	Wed, Feb 5, 2014	22.03	22.22	22.01	22.07
4328	NASDAQ	ARTNA	Tue, Feb 4, 2014	22.27	22.46	22.08	22.10
4327	NASDAQ	ARTNA	Mon, Feb 3, 2014	22.38	22.56	22.00	22.18
4326	NASDAQ	ARTNA	Fri, Jan 31, 2014	22.22	22.51	22.19	22.51
4325	NASDAQ	ARTNA	Thu, Jan 30, 2014	22.30	22.50	22.25	22.46
4324	NASDAQ	ARTNA	Wed, Jan 29, 2014	22.09	22.30	22.00	22.20
4323	NASDAQ	ARTNA	Tue, Jan 28, 2014	22.16	22.34	21.94	22.34
4322	NASDAQ	ARTNA	Mon, Jan 27, 2014	22.12	22.37	22.00	22.14
4321	NASDAQ	ARTNA	Fri, Jan 24, 2014	22.11	22.48	22.05	22.16
4320	NASDAQ	ARTNA	Thu, Jan 23, 2014	22.25	22.58	22.22	22.27
4319	NASDAQ	ARTNA	Wed, Jan 22, 2014	22.48	22.44	22.27	22.31
4318	NASDAQ	ARTNA	Tue, Jan 21, 2014	22.25	22.44	22.25	22.42
4317	NASDAQ	ARTNA	Fri, Jan 17, 2014	22.38	22.47	22.21	22.24
4316	NASDAQ	ARTNA	Thu, Jan 16, 2014	22.36	22.58	22.28	22.47
4315	NASDAQ	ARTNA	Wed, Jan 15, 2014	22.46	22.58	22.28	22.50
4314	NASDAQ	ARTNA	Tue, Jan 14, 2014	22.60	22.60	22.29	22.51
4313	NASDAQ	ARTNA	Mon, Jan 13, 2014	22.48	22.66	22.28	22.50
4312	NASDAQ	ARTNA	Fri, Jan 10, 2014	22.66	22.82	22.40	22.60
4311	NASDAQ	ARTNA	Thu, Jan 9, 2014	22.70	22.92	22.39	22.60
4310	NASDAQ	ARTNA	Wed, Jan 8, 2014	23.59	23.59	22.70	22.70
4309	NASDAQ	ARTNA	Tue, Jan 7, 2014	22.73	23.82	22.56	23.70
4308	NASDAQ	ARTNA	Mon, Jan 6, 2014	23.04	23.04	22.48	22.53
4307	NASDAQ	ARTNA	Fri, Jan 3, 2014	22.52	22.94	22.26	22.93
4306	NASDAQ	ARTNA	Thu, Jan 2, 2014	22.87	22.96	22.21	22.45
4305	NASDAQ	ARTNA	Tue, Dec 31, 2013	23.08	23.18	22.82	22.95
4304	NASDAQ	ARTNA	Mon, Dec 30, 2013	23.19	23.10	22.81	22.99
4303	NASDAQ	ARTNA	Fri, Dec 27, 2013	23.39	23.41	23.09	23.25
4302	NASDAQ	ARTNA	Thu, Dec 26, 2013	23.40	23.46	23.08	23.28
4301	NASDAQ	ARTNA	Tue, Dec 24, 2013	23.38	23.50	23.05	23.27
4300	NASDAQ	ARTNA	Mon, Dec 23, 2013	23.54	23.57	23.00	23.43
4299	NASDAQ	ARTNA	Fri, Dec 20, 2013	23.14	23.63	23.02	23.53
4298	NASDAQ	ARTNA	Thu, Dec 19, 2013	23.20	23.38	22.86	23.04
4297	NASDAQ	ARTNA	Wed, Dec 18, 2013	22.42	23.13	22.49	23.13
4296	NASDAQ	ARTNA	Tue, Dec 17, 2013	22.39	22.48	22.02	22.46
4295	NASDAQ	ARTNA	Mon, Dec 16, 2013	22.14	22.38	21.96	22.37
4294	NASDAQ	ARTNA	Fri, Dec 13, 2013	22.04	22.18	21.76	22.10
4293	NASDAQ	ARTNA	Thu, Dec 12, 2013	21.65	22.14	21.65	22.08
4292	NASDAQ	ARTNA	Wed, Dec 11, 2013	22.02	22.10	21.62	21.68
4291	NASDAQ	ARTNA	Tue, Dec 10, 2013	22.30	22.30	21.90	22.01
4290	NASDAQ	ARTNA	Mon, Dec 9, 2013	22.57	22.62	22.40	22.41
4289	NASDAQ	ARTNA	Fri, Dec 6, 2013	22.34	22.66	22.21	22.62
4288	NASDAQ	ARTNA	Thu, Dec 5, 2013	22.21	22.39	22.05	22.36
4287	NASDAQ	ARTNA	Wed, Dec 4, 2013	22.52	22.78	22.17	22.28
4286	NASDAQ	ARTNA	Tue, Dec 3, 2013	22.57	22.73	22.52	22.60
4285	NASDAQ	ARTNA	Mon, Dec 2, 2013	23.56	23.56	22.52	22.53
4284	NASDAQ	ARTNA	Fri, Nov 29, 2013	23.75	23.81	23.18	23.70
4283	NASDAQ	ARTNA	Wed, Nov 27, 2013	23.05	23.82	22.74	23.62
4282	NASDAQ	ARTNA	Tue, Nov 26, 2013	23.28	23.28	22.93	22.97
4281	NASDAQ	ARTNA	Mon, Nov 25, 2013	22.99	23.64	23.08	23.32
4280	NASDAQ	ARTNA	Fri, Nov 22, 2013	22.96	22.99	22.64	22.97
4279	NASDAQ	ARTNA	Thu, Nov 21, 2013	22.51	22.92	22.23	22.89
4278	NASDAQ	ARTNA	Wed, Nov 20, 2013	22.37	22.56	22.35	22.52
4277	NASDAQ	ARTNA	Tue, Nov 19, 2013	22.31	22.57	22.00	22.35
4276	NASDAQ	ARTNA	Mon, Nov 18, 2013	22.40	22.60	22.23	22.31
4275	NASDAQ	ARTNA	Fri, Nov 15, 2013	22.32	22.44	21.99	22.42
4274	NASDAQ	ARTNA	Thu, Nov 14, 2013	22.21	22.39	22.11	22.39
4273	NASDAQ	ARTNA	Wed, Nov 13, 2013	21.91	22.27	21.91	22.27
4272	NASDAQ	ARTNA	Tue, Nov 12, 2013	22.07	22.19	21.86	21.97
4271	NASDAQ	ARTNA	Mon, Nov 11, 2013	22.72	22.77	22.17	22.19
4270	NASDAQ	ARTNA	Fri, Nov 8, 2013	22.62	22.82	22.50	22.77
4269	NASDAQ	ARTNA	Thu, Nov 7, 2013	22.50	22.71	22.50	22.53
4268	NASDAQ	ARTNA	Wed, Nov 6, 2013	22.60	22.78	22.50	22.51
4267	NASDAQ	ARTNA	Tue, Nov 5, 2013	22.70	22.92	22.73	22.78
4266	NASDAQ	ARTNA	Mon, Nov 4, 2013	22.79	22.92	22.70	22.83
4265	NASDAQ	ARTNA	Fri, Nov 1, 2013	22.81	22.95	22.75	22.80
4264	NASDAQ	ARTNA	Thu, Oct 31, 2013	22.70	22.93	22.71	22.90
4263	NASDAQ	ARTNA	Wed, Oct 30, 2013	22.76	22.80	22.56	22.71
4262	NASDAQ	ARTNA	Tue, Oct 29, 2013	22.68	22.92	22.51	22.82
4261	NASDAQ	ARTNA	Mon, Oct 28, 2013	22.57	22.72	22.41	22.68
4260	NASDAQ	ARTNA	Fri, Oct 25, 2013	22.42	22.58	22.42	22.57
4259	NASDAQ	ARTNA	Thu, Oct 24, 2013	22.26	22.44	22.17	22.34
4258	NASDAQ	ARTNA	Wed, Oct 23, 2013	22.11	22.40	22.06	22.22
4257	NASDAQ	ARTNA	Tue, Oct 22, 2013	22.56	22.69	22.00	22.28
4256	NASDAQ	ARTNA	Mon, Oct 21, 2013	22.55	22.69	22.41	22.42
4255	NASDAQ	ARTNA	Fri, Oct 18, 2013	22.42	22.57	22.21	22.54
4254	NASDAQ	ARTNA	Thu, Oct 17, 2013	22.16	22.47	22.16	22.39
4253	NASDAQ	ARTNA	Wed, Oct 16, 2013	22.29	22.46	22.18	22.22
4252	NASDAQ	ARTNA	Tue, Oct 15, 2013	22.42	22.54	22.21	22.25
4251	NASDAQ	ARTNA	Mon, Oct 14, 2013	22.26	22.54	22.18	22.53
4250	NASDAQ	ARTNA	Fri, Oct 11, 2013	22.26	22.54	22.23	22.41
4249	NASDAQ	ARTNA	Thu, Oct 10, 2013	22.47	22.54	22.19	22.30
4248	NASDAQ	ARTNA	Wed, Oct 9, 2013	22.17	22.54	22.17	22.25
4247	NASDAQ	ARTNA	Tue, Oct 8, 2013	22.23	22.53	22.10	22.18
4246	NASDAQ	ARTNA	Mon, Oct 7, 2013	22.06	22.38	22.06	22.22
4245	NASDAQ	ARTNA	Fri, Oct 4, 2013	22.19	22.42	22.15	22.28
4244	NASDAQ	ARTNA	Thu, Oct 3, 2013	22.33	22.36	22.03	22.26
4243	NASDAQ	ARTNA	Wed, Oct 2, 2013	22.49	22.49	22.18	22.33
4242	NASDAQ	ARTNA	Tue, Oct 1, 2013	22.15	22.77	22.02	22.60
4241	NASDAQ	ARTNA	Mon, Sep 30, 2013	22.20	22.35	22.19	22.25
4240	NASDAQ	ARTNA	Fri, Sep 27, 2013	22.25	22.63	22.25	22.35
4239	NASDAQ	ARTNA	Thu, Sep 26, 2013	22.64	22.80	22.26	22.29
4238	NASDAQ	ARTNA	Wed, Sep 25, 2013	22.81	22.96	22.47	22.49
4237	NASDAQ	ARTNA	Tue, Sep 24, 2013	22.69	22.96	22.69	22.72
4236	NASDAQ	ARTNA	Mon, Sep 23, 2013	22.15	22.74	22.15	22.74
4235	NASDAQ	ARTNA	Fri, Sep 20, 2013	22.23	22.23	21.87	22.11
4234	NASDAQ	ARTNA	Thu, Sep 19, 2013	22.31	22.32	21.95	22.21
4233	NASDAQ	ARTNA	Wed, Sep 18, 2013	21.89	22.29	21.70	22.29
4232	NASDAQ	ARTNA	Tue, Sep 17, 2013	21.80	22.00	21.74	21.91
4231	NASDAQ	ARTNA	Mon, Sep 16, 2013	22.33	22.47	21.71	21.85
4230	NASDAQ	ARTNA	Fri, Sep 13, 2013	22.32	22.63	22.11	22.21
4229	NASDAQ	ARTNA	Thu, Sep 12, 2013	22.49	22.63	22.34	22.34
4228	NASDAQ	ARTNA	Wed, Sep 11, 2013	22.50	22.56	22.33	22.46
4227	NASDAQ	ARTNA	Tue, Sep 10, 2013	22.31	22.55	22.09	22.54
4226	NASDAQ	ARTNA	Mon, Sep 9, 2013	22.14	22.34	22.08	22.33
4225	NASDAQ	ARTNA	Fri, Sep 6, 2013	22.20	22.22	22.00	22.09
4224	NASDAQ	ARTNA	Thu, Sep 5, 2013	22.08	22.15	21.96	22.10
4223	NASDAQ	ARTNA	Wed, Sep 4, 2013	21.92	22.02	21.77	22.00
4222	NASDAQ	ARTNA	Tue, Sep 3, 2013	21.98	21.98	21.74	21.91
4221	NASDAQ	ARTNA	Fri, Aug 30, 2013	21.88	21.88	21.53	21.80
4220	NASDAQ	ARTNA	Thu, Aug 29, 2013	21.65	21.93	21.57	21.91
4219	NASDAQ	ARTNA	Wed, Aug 28, 2013	21.94	22.04	21.63	21.80
4218	NASDAQ	ARTNA	Tue, Aug 27, 2013	22.01	22.27	21.79	21.87
4217	NASDAQ	ARTNA	Mon, Aug 26, 2013	22.36	22.69	22.28	22.28
4216	NASDAQ	ARTNA	Fri, Aug 23, 2013	22.45	22.58	22.12	22.30
4215	NASDAQ	ARTNA	Thu, Aug 22, 2013	22.28	23.50	22.27	22.30
4214	NASDAQ	ARTNA	Wed, Aug 21, 2013	22.55	22.55	22.21	22.24
4213	NASDAQ	ARTNA	Tue, Aug 20, 2013	22.10	22.70	22.07	22.64
4212	NASDAQ	ARTNA	Mon, Aug 19, 2013	22.07	22.20	22.00	22.01
4211	NASDAQ	ARTNA	Fri, Aug 16, 2013	22.00	22.24	21.97	22.01
4210	NASDAQ	ARTNA	Thu, Aug 15, 2013	22.33	22.72	22.02	22.06
4209	NASDAQ	ARTNA	Wed, Aug 14, 2013	22.73	22.76	22.27	22.47
4208	NASDAQ	ARTNA	Tue, Aug 13, 2013	22.61	22.82	22.37	22.70
4207	NASDAQ	ARTNA	Mon, Aug 12, 2013	22.53	22.92	22.35	22.66
4206	NASDAQ	ARTNA	Fri, Aug 9, 2013	22.27	22.74	22.27	22.68
4205	NASDAQ	ARTNA	Thu, Aug 8, 2013	22.39	22.39	22.20	22.28
4204	NASDAQ	ARTNA	Wed, Aug 7, 2013	22.41	22.61	22.33	22.42
4203	NASDAQ	ARTNA	Tue, Aug 6, 2013	22.43	22.44	22.23	22.35
4202	NASDAQ	ARTNA	Mon, Aug 5, 2013	22.61	22.71	22.30	22.44
4201	NASDAQ	ARTNA	Fri, Aug 2, 2013	22.84	22.84	22.42	22.70
4200	NASDAQ	ARTNA	Thu, Aug 1, 2013	23.79	23.79	22.62	22.86
4199	NASDAQ	ARTNA	Wed, Jul 31, 2013	23.49	23.75	23.49	23.54
4198	NASDAQ	ARTNA	Tue, Jul 30, 2013	23.47	23.47	23.22	23.36
4197	NASDAQ	ARTNA	Mon, Jul 29, 2013	23.62	23.62	23.08	23.33
4196	NASDAQ	ARTNA	Fri, Jul 26, 2013	23.82	23.99	23.43	23.58
4195	NASDAQ	ARTNA	Thu, Jul 25, 2013	23.70	24.22	23.70	23.99
4194	NASDAQ	ARTNA	Wed, Jul 24, 2013	23.79	24.05	23.77	23.79
4193	NASDAQ	ARTNA	Tue, Jul 23, 2013	23.59	23.88	23.11	23.68
4192	NASDAQ	ARTNA	Mon, Jul 22, 2013	22.97	23.62	22.90	23.52
4191	NASDAQ	ARTNA	Fri, Jul 19, 2013	23.09	23.50	22.86	23.08
4190	NASDAQ	ARTNA	Thu, Jul 18, 2013	23.15	23.26	22.90	23.18
4189	NASDAQ	ARTNA	Wed, Jul 17, 2013	23.16	23.30	22.75	23.05
4188	NASDAQ	ARTNA	Tue, Jul 16, 2013	22.95	23.28	22.87	22.99
4187	NASDAQ	ARTNA	Mon, Jul 15, 2013	23.92	23.92	22.86	23.00
4186	NASDAQ	ARTNA	Fri, Jul 12, 2013	23.37	24.27	22.91	23.73
4185	NASDAQ	ARTNA	Thu, Jul 11, 2013	22.37	23.50	22.32	23.37
4184	NASDAQ	ARTNA	Wed, Jul 10, 2013	22.09	22.25	21.86	22.22
4183	NASDAQ	ARTNA	Tue, Jul 9, 2013	22.23	22.35	21.82	22.30
4182	NASDAQ	ARTNA	Mon, Jul 8, 2013	22.36	22.36	22.06	22.06
4181	NASDAQ	ARTNA	Fri, Jul 5, 2013	22.53	22.53	21.89	22.32
4180	NASDAQ	ARTNA	Wed, Jul 3, 2013	21.97	22.29	21.89	22.26
4179	NASDAQ	ARTNA	Tue, Jul 2, 2013	22.39	22.71	22.02	22.11
4178	NASDAQ	ARTNA	Mon, Jul 1, 2013	22.23	22.39	22.13	22.38
4177	NASDAQ	ARTNA	Fri, Jun 28, 2013	22.16	22.29	22.10	22.28
4176	NASDAQ	ARTNA	Thu, Jun 27, 2013	21.93	22.19	21.88	22.04
4175	NASDAQ	ARTNA	Wed, Jun 26, 2013	22.03	22.06	21.75	21.76
4174	NASDAQ	ARTNA	Tue, Jun 25, 2013	22.14	22.18	21.71	21.94
4173	NASDAQ	ARTNA	Mon, Jun 24, 2013	21.58	22.22	21.58	21.99
4172	NASDAQ	ARTNA	Fri, Jun 21, 2013	21.75	21.86	21.54	21.72
4171	NASDAQ	ARTNA	Thu, Jun 20, 2013	21.82	21.91	21.57	21.63
4170	NASDAQ	ARTNA	Wed, Jun 19, 2013	21.91	22.19	21.82	22.01
4169	NASDAQ	ARTNA	Tue, Jun 18, 2013	21.72	22.04	21.72	22.02
4168	NASDAQ	ARTNA	Mon, Jun 17, 2013	21.96	21.96	21.56	21.63
4167	NASDAQ	ARTNA	Fri, Jun 14, 2013	21.95	22.00	21.75	21.77
4166	NASDAQ	ARTNA	Thu, Jun 13, 2013	21.84	22.05	21.71	22.04
4165	NASDAQ	ARTNA	Wed, Jun 12, 2013	22.05	22.05	21.65	21.77
4164	NASDAQ	ARTNA	Tue, Jun 11, 2013	21.96	22.04	21.80	21.89
4163	NASDAQ	ARTNA	Mon, Jun 10, 2013	22.15	22.15	21.89	22.10
4162	NASDAQ	ARTNA	Fri, Jun 7, 2013	22.26	22.28	22.16	22.23
4161	NASDAQ	ARTNA	Thu, Jun 6, 2013	22.11	22.27	21.95	22.09
4160	NASDAQ	ARTNA	Wed, Jun 5, 2013	22.00	22.22	21.80	22.04
4159	NASDAQ	ARTNA	Tue, Jun 4, 2013	22.37	22.37	22.01	22.08
4158	NASDAQ	ARTNA	Mon, Jun 3, 2013	22.10	22.55	22.05	22.41
4157	NASDAQ	ARTNA	Fri, May 31, 2013	22.23	22.35	22.06	22.11
4156	NASDAQ	ARTNA	Thu, May 30, 2013	22.26	22.40	22.14	22.37
4155	NASDAQ	ARTNA	Wed, May 29, 2013	22.57	22.62	22.13	22.22
4154	NASDAQ	ARTNA	Tue, May 28, 2013	22.75	22.95	22.02	22.63
4153	NASDAQ	ARTNA	Fri, May 24, 2013	22.25	22.83	22.25	22.61
4152	NASDAQ	ARTNA	Thu, May 23, 2013	22.06	22.73	22.06	22.41
4151	NASDAQ	ARTNA	Wed, May 22, 2013	22.93	22.98	22.06	22.15
4150	NASDAQ	ARTNA	Tue, May 21, 2013	22.52	23.23	22.52	22.75
4149	NASDAQ	ARTNA	Mon, May 20, 2013	22.72	22.88	22.33	22.56
4148	NASDAQ	ARTNA	Fri, May 17, 2013	22.34	22.88	22.32	22.65
4147	NASDAQ	ARTNA	Thu, May 16, 2013	22.13	22.33	22.02	22.28
4146	NASDAQ	ARTNA	Wed, May 15, 2013	22.05	22.58	22.05	22.12
4145	NASDAQ	ARTNA	Tue, May 14, 2013	21.99	22.09	21.82	22.08
4144	NASDAQ	ARTNA	Mon, May 13, 2013	22.52	22.52	21.89	21.95
4143	NASDAQ	ARTNA	Fri, May 10, 2013	22.76	22.85	22.34	22.48
4142	NASDAQ	ARTNA	Thu, May 9, 2013	22.60	23.05	22.60	22.66
4141	NASDAQ	ARTNA	Wed, May 8, 2013	22.97	22.97	22.34	22.66
4140	NASDAQ	ARTNA	Tue, May 7, 2013	23.10	23.30	22.83	23.20
4139	NASDAQ	ARTNA	Mon, May 6, 2013	23.51	23.51	23.11	23.22
4138	NASDAQ	ARTNA	Fri, May 3, 2013	23.27	23.75	22.71	23.44
4137	NASDAQ	ARTNA	Thu, May 2, 2013	22.72	23.23	22.72	23.04
4136	NASDAQ	ARTNA	Wed, May 1, 2013	23.57	23.58	22.50	22.69
4135	NASDAQ	ARTNA	Tue, Apr 30, 2013	23.22	23.70	23.17	23.57
4134	NASDAQ	ARTNA	Mon, Apr 29, 2013	22.96	23.25	22.85	23.22
4133	NASDAQ	ARTNA	Fri, Apr 26, 2013	22.79	22.93	22.56	22.82
4132	NASDAQ	ARTNA	Thu, Apr 25, 2013	22.60	22.84	22.60	22.77
4131	NASDAQ	ARTNA	Wed, Apr 24, 2013	22.48	22.66	22.47	22.55
4130	NASDAQ	ARTNA	Tue, Apr 23, 2013	22.47	22.47	22.11	22.44
4129	NASDAQ	ARTNA	Mon, Apr 22, 2013	22.65	22.65	22.10	22.24
4128	NASDAQ	ARTNA	Fri, Apr 19, 2013	22.11	22.65	22.01	22.58
4127	NASDAQ	ARTNA	Thu, Apr 18, 2013	21.97	22.18	21.81	22.08
4126	NASDAQ	ARTNA	Wed, Apr 17, 2013	22.05	22.24	21.83	21.97
4125	NASDAQ	ARTNA	Tue, Apr 16, 2013	21.89	22.29	21.88	22.14
4124	NASDAQ	ARTNA	Mon, Apr 15, 2013	22.05	22.28	21.89	21.97
4123	NASDAQ	ARTNA	Fri, Apr 12, 2013	21.88	22.34	21.86	22.10
4122	NASDAQ	ARTNA	Thu, Apr 11, 2013	21.94	22.00	21.81	21.93
4121	NASDAQ	ARTNA	Wed, Apr 10, 2013	21.93	21.98	21.80	21.89
4120	NASDAQ	ARTNA	Tue, Apr 9, 2013	22.46	22.46	21.81	21.81
4119	NASDAQ	ARTNA	Mon, Apr 8, 2013	22.29	22.50	22.25	22.39
4118	NASDAQ	ARTNA	Fri, Apr 5, 2013	21.73	22.19	21.72	22.17
4117	NASDAQ	ARTNA	Thu, Apr 4, 2013	21.88	21.92	21.68	21.91
4116	NASDAQ	ARTNA	Wed, Apr 3, 2013	22.07	22.16	21.70	21.75
4115	NASDAQ	ARTNA	Tue, Apr 2, 2013	22.32	22.44	21.95	21.98
4114	NASDAQ	ARTNA	Mon, Apr 1, 2013	22.51	22.58	22.09	22.16
4113	NASDAQ	ARTNA	Thu, Mar 28, 2013	22.33	22.57	22.21	22.47
4112	NASDAQ	ARTNA	Wed, Mar 27, 2013	22.17	22.31	21.91	22.25
4111	NASDAQ	ARTNA	Tue, Mar 26, 2013	22.29	22.29	22.04	22.23
4110	NASDAQ	ARTNA	Mon, Mar 25, 2013	22.00	22.25	21.79	22.24
4109	NASDAQ	ARTNA	Fri, Mar 22, 2013	21.86	22.01	21.77	21.94
4108	NASDAQ	ARTNA	Thu, Mar 21, 2013	21.89	21.99	21.52	21.73
4107	NASDAQ	ARTNA	Wed, Mar 20, 2013	21.99	22.00	21.92	21.99
4106	NASDAQ	ARTNA	Tue, Mar 19, 2013	21.99	21.99	21.92	21.95
4105	NASDAQ	ARTNA	Mon, Mar 18, 2013	22.20	22.20	21.93	21.93
4104	NASDAQ	ARTNA	Fri, Mar 15, 2013	22.32	22.34	22.19	22.28
4103	NASDAQ	ARTNA	Thu, Mar 14, 2013	22.39	22.50	22.16	22.27
4102	NASDAQ	ARTNA	Wed, Mar 13, 2013	22.50	22.56	22.38	22.47
4101	NASDAQ	ARTNA	Tue, Mar 12, 2013	22.51	22.63	22.39	22.57
4100	NASDAQ	ARTNA	Mon, Mar 11, 2013	22.43	22.62	22.40	22.53
4099	NASDAQ	ARTNA	Fri, Mar 8, 2013	22.50	22.61	22.33	22.47
4098	NASDAQ	ARTNA	Thu, Mar 7, 2013	22.44	22.55	22.37	22.51
4097	NASDAQ	ARTNA	Wed, Mar 6, 2013	22.64	22.64	22.35	22.51
4096	NASDAQ	ARTNA	Tue, Mar 5, 2013	22.47	22.62	22.29	22.49
4095	NASDAQ	ARTNA	Mon, Mar 4, 2013	22.42	22.44	22.26	22.44
4094	NASDAQ	ARTNA	Fri, Mar 1, 2013	22.20	22.44	22.20	22.42
4093	NASDAQ	ARTNA	Thu, Feb 28, 2013	22.38	22.40	22.25	22.25
4092	NASDAQ	ARTNA	Wed, Feb 27, 2013	22.39	22.54	22.27	22.42
4091	NASDAQ	ARTNA	Tue, Feb 26, 2013	22.00	22.48	22.00	22.34
4090	NASDAQ	ARTNA	Mon, Feb 25, 2013	22.53	22.59	21.91	21.93
4089	NASDAQ	ARTNA	Fri, Feb 22, 2013	22.40	22.59	22.34	22.50
4088	NASDAQ	ARTNA	Thu, Feb 21, 2013	22.23	22.47	22.20	22.33
4087	NASDAQ	ARTNA	Wed, Feb 20, 2013	22.49	22.59	22.23	22.23
4086	NASDAQ	ARTNA	Tue, Feb 19, 2013	22.47	22.59	22.41	22.50
4085	NASDAQ	ARTNA	Fri, Feb 15, 2013	22.30	22.58	22.06	22.44
4084	NASDAQ	ARTNA	Thu, Feb 14, 2013	22.07	22.22	22.05	22.08
4083	NASDAQ	ARTNA	Wed, Feb 13, 2013	22.50	22.50	22.05	22.13
4082	NASDAQ	ARTNA	Tue, Feb 12, 2013	22.46	22.65	22.43	22.50
4081	NASDAQ	ARTNA	Mon, Feb 11, 2013	22.54	22.66	22.35	22.45
4080	NASDAQ	ARTNA	Fri, Feb 8, 2013	22.22	22.58	22.17	22.50
4079	NASDAQ	ARTNA	Thu, Feb 7, 2013	22.31	22.40	22.14	22.18
4078	NASDAQ	ARTNA	Wed, Feb 6, 2013	22.24	22.59	22.24	22.43
4077	NASDAQ	ARTNA	Tue, Feb 5, 2013	22.34	22.47	22.17	22.40
4076	NASDAQ	ARTNA	Mon, Feb 4, 2013	22.40	22.50	22.18	22.20
4075	NASDAQ	ARTNA	Fri, Feb 1, 2013	22.57	22.84	22.43	22.46
4074	NASDAQ	ARTNA	Thu, Jan 31, 2013	22.67	22.86	22.58	22.65
4073	NASDAQ	ARTNA	Wed, Jan 30, 2013	22.90	22.93	22.61	22.62
4072	NASDAQ	ARTNA	Tue, Jan 29, 2013	22.93	22.99	22.72	22.88
4071	NASDAQ	ARTNA	Mon, Jan 28, 2013	22.52	22.95	22.52	22.87
4070	NASDAQ	ARTNA	Fri, Jan 25, 2013	23.01	23.32	22.45	22.50
4069	NASDAQ	ARTNA	Thu, Jan 24, 2013	22.58	22.98	22.46	22.88
4068	NASDAQ	ARTNA	Wed, Jan 23, 2013	22.80	22.86	22.37	22.56
4067	NASDAQ	ARTNA	Tue, Jan 22, 2013	22.75	23.11	22.64	22.84
4066	NASDAQ	ARTNA	Fri, Jan 18, 2013	22.59	22.80	22.59	22.74
4065	NASDAQ	ARTNA	Thu, Jan 17, 2013	22.38	22.69	22.31	22.67
4064	NASDAQ	ARTNA	Wed, Jan 16, 2013	22.60	22.60	22.26	22.51
4063	NASDAQ	ARTNA	Tue, Jan 15, 2013	22.66	22.66	22.34	22.64
4062	NASDAQ	ARTNA	Mon, Jan 14, 2013	22.76	22.92	22.56	22.81
4061	NASDAQ	ARTNA	Fri, Jan 11, 2013	22.72	22.98	22.40	22.74
4060	NASDAQ	ARTNA	Thu, Jan 10, 2013	22.83	22.83	22.50	22.58
4059	NASDAQ	ARTNA	Wed, Jan 9, 2013	22.45	22.87	22.25	22.67
4058	NASDAQ	ARTNA	Tue, Jan 8, 2013	22.07	22.65	21.86	22.35
4057	NASDAQ	ARTNA	Mon, Jan 7, 2013	22.47	22.52	21.92	22.02
4056	NASDAQ	ARTNA	Fri, Jan 4, 2013	22.51	22.93	22.29	22.57
4055	NASDAQ	ARTNA	Thu, Jan 3, 2013	22.81	22.91	22.15	22.25
4054	NASDAQ	ARTNA	Wed, Jan 2, 2013	22.80	22.80	22.32	22.60
4053	NASDAQ	ARTNA	Mon, Dec 31, 2012	22.18	22.48	21.69	22.43
4052	NASDAQ	ARTNA	Fri, Dec 28, 2012	21.67	22.39	21.44	22.03
4051	NASDAQ	ARTNA	Thu, Dec 27, 2012	21.88	21.99	21.22	21.66
4050	NASDAQ	ARTNA	Wed, Dec 26, 2012	22.68	22.68	21.68	21.80
4049	NASDAQ	ARTNA	Mon, Dec 24, 2012	22.20	22.89	21.87	22.58
4048	NASDAQ	ARTNA	Fri, Dec 21, 2012	22.26	22.38	21.81	22.25
4047	NASDAQ	ARTNA	Thu, Dec 20, 2012	22.39	22.56	21.92	22.22
4046	NASDAQ	ARTNA	Wed, Dec 19, 2012	22.32	22.49	21.85	22.31
4045	NASDAQ	ARTNA	Tue, Dec 18, 2012	21.55	22.15	21.55	22.13
4044	NASDAQ	ARTNA	Mon, Dec 17, 2012	20.90	22.00	20.77	21.50
4043	NASDAQ	ARTNA	Fri, Dec 14, 2012	20.97	21.27	20.66	20.79
4042	NASDAQ	ARTNA	Thu, Dec 13, 2012	20.88	21.39	20.85	21.09
4041	NASDAQ	ARTNA	Wed, Dec 12, 2012	21.11	21.51	20.80	20.80
4040	NASDAQ	ARTNA	Tue, Dec 11, 2012	21.25	22.06	20.90	21.03
4039	NASDAQ	ARTNA	Mon, Dec 10, 2012	21.12	21.27	20.80	21.16
4038	NASDAQ	ARTNA	Fri, Dec 7, 2012	21.05	21.27	20.54	21.03
4037	NASDAQ	ARTNA	Thu, Dec 6, 2012	20.77	21.23	20.40	21.18
4036	NASDAQ	ARTNA	Wed, Dec 5, 2012	21.01	21.04	20.59	20.84
4035	NASDAQ	ARTNA	Tue, Dec 4, 2012	20.76	21.08	20.15	20.89
4034	NASDAQ	ARTNA	Mon, Dec 3, 2012	20.81	21.07	20.43	20.63
4033	NASDAQ	ARTNA	Fri, Nov 30, 2012	21.11	21.16	20.66	20.77
4032	NASDAQ	ARTNA	Thu, Nov 29, 2012	21.40	21.42	20.60	21.03
4031	NASDAQ	ARTNA	Wed, Nov 28, 2012	21.39	21.47	21.14	21.17
4030	NASDAQ	ARTNA	Tue, Nov 27, 2012	21.20	21.70	21.04	21.38
4029	NASDAQ	ARTNA	Mon, Nov 26, 2012	20.72	21.64	20.72	21.28
4028	NASDAQ	ARTNA	Fri, Nov 23, 2012	21.54	21.69	20.79	21.00
4027	NASDAQ	ARTNA	Wed, Nov 21, 2012	21.47	21.57	21.00	21.57
4026	NASDAQ	ARTNA	Tue, Nov 20, 2012	20.99	21.24	20.50	21.19
4025	NASDAQ	ARTNA	Mon, Nov 19, 2012	21.51	21.54	20.75	21.00
4024	NASDAQ	ARTNA	Fri, Nov 16, 2012	20.61	21.64	19.92	21.24
4023	NASDAQ	ARTNA	Thu, Nov 15, 2012	19.82	20.70	19.78	20.65
4022	NASDAQ	ARTNA	Wed, Nov 14, 2012	21.11	21.30	19.79	19.95
4021	NASDAQ	ARTNA	Tue, Nov 13, 2012	21.50	21.70	20.79	20.97
4020	NASDAQ	ARTNA	Mon, Nov 12, 2012	21.99	22.04	21.51	21.58
4019	NASDAQ	ARTNA	Fri, Nov 9, 2012	21.96	22.17	21.71	21.90
4018	NASDAQ	ARTNA	Thu, Nov 8, 2012	22.54	22.54	21.84	22.06
4017	NASDAQ	ARTNA	Wed, Nov 7, 2012	23.44	23.48	22.22	22.64
4016	NASDAQ	ARTNA	Tue, Nov 6, 2012	23.47	23.97	23.11	23.74
4015	NASDAQ	ARTNA	Mon, Nov 5, 2012	24.15	24.38	22.96	23.28
4014	NASDAQ	ARTNA	Fri, Nov 2, 2012	23.80	24.40	23.76	24.10
4013	NASDAQ	ARTNA	Thu, Nov 1, 2012	23.09	23.76	22.34	23.76
4012	NASDAQ	ARTNA	Wed, Oct 31, 2012	22.85	23.40	22.42	23.01
4011	NASDAQ	ARTNA	Fri, Oct 26, 2012	22.94	23.10	22.37	22.61
4010	NASDAQ	ARTNA	Thu, Oct 25, 2012	23.08	23.40	22.62	23.01
4009	NASDAQ	ARTNA	Wed, Oct 24, 2012	22.56	23.16	22.56	22.89
4008	NASDAQ	ARTNA	Tue, Oct 23, 2012	22.65	23.15	22.03	23.04
4007	NASDAQ	ARTNA	Mon, Oct 22, 2012	22.50	22.95	22.46	22.65
4006	NASDAQ	ARTNA	Fri, Oct 19, 2012	23.92	23.92	22.50	22.60
4005	NASDAQ	ARTNA	Thu, Oct 18, 2012	24.16	24.16	23.68	23.86
4004	NASDAQ	ARTNA	Wed, Oct 17, 2012	23.24	23.81	23.24	23.74
4003	NASDAQ	ARTNA	Tue, Oct 16, 2012	23.21	23.29	22.81	23.25
4002	NASDAQ	ARTNA	Mon, Oct 15, 2012	23.37	23.60	22.85	23.14
4001	NASDAQ	ARTNA	Fri, Oct 12, 2012	23.06	23.49	23.02	23.25
4000	NASDAQ	ARTNA	Thu, Oct 11, 2012	24.13	24.13	22.80	23.08
3999	NASDAQ	ARTNA	Wed, Oct 10, 2012	23.39	24.02	23.25	24.01
3998	NASDAQ	ARTNA	Tue, Oct 9, 2012	23.65	23.65	23.25	23.28
3997	NASDAQ	ARTNA	Mon, Oct 8, 2012	23.61	23.79	23.46	23.56
3996	NASDAQ	ARTNA	Fri, Oct 5, 2012	24.26	24.26	23.30	23.61
3995	NASDAQ	ARTNA	Thu, Oct 4, 2012	23.66	24.37	23.47	24.24
3994	NASDAQ	ARTNA	Wed, Oct 3, 2012	22.98	23.67	22.98	23.53
3993	NASDAQ	ARTNA	Tue, Oct 2, 2012	23.57	23.57	22.15	22.89
3992	NASDAQ	ARTNA	Mon, Oct 1, 2012	23.39	23.62	23.22	23.45
3991	NASDAQ	ARTNA	Fri, Sep 28, 2012	23.50	24.20	23.23	23.23
3990	NASDAQ	ARTNA	Thu, Sep 27, 2012	23.59	23.59	23.24	23.49
3989	NASDAQ	ARTNA	Wed, Sep 26, 2012	23.29	23.62	23.00	23.40
3988	NASDAQ	ARTNA	Tue, Sep 25, 2012	23.42	24.43	23.13	23.13
3987	NASDAQ	ARTNA	Mon, Sep 24, 2012	22.83	23.44	22.83	23.39
3986	NASDAQ	ARTNA	Fri, Sep 21, 2012	22.95	23.46	22.57	22.87
3985	NASDAQ	ARTNA	Thu, Sep 20, 2012	22.72	22.97	22.46	22.60
3984	NASDAQ	ARTNA	Wed, Sep 19, 2012	22.93	23.00	22.61	22.74
3983	NASDAQ	ARTNA	Tue, Sep 18, 2012	22.63	23.03	22.51	22.83
3982	NASDAQ	ARTNA	Mon, Sep 17, 2012	22.69	22.82	22.09	22.64
3981	NASDAQ	ARTNA	Fri, Sep 14, 2012	22.62	22.98	22.19	22.56
3980	NASDAQ	ARTNA	Thu, Sep 13, 2012	22.16	22.76	22.14	22.54
3979	NASDAQ	ARTNA	Wed, Sep 12, 2012	22.30	22.30	22.02	22.24
3978	NASDAQ	ARTNA	Tue, Sep 11, 2012	22.11	22.29	21.91	22.28
3977	NASDAQ	ARTNA	Mon, Sep 10, 2012	22.19	22.19	21.81	22.00
3976	NASDAQ	ARTNA	Fri, Sep 7, 2012	22.24	22.24	21.62	22.23
3975	NASDAQ	ARTNA	Thu, Sep 6, 2012	21.89	22.20	21.26	22.20
3974	NASDAQ	ARTNA	Wed, Sep 5, 2012	22.10	22.10	21.61	21.80
3973	NASDAQ	ARTNA	Tue, Sep 4, 2012	21.95	21.99	21.00	21.93
3972	NASDAQ	ARTNA	Fri, Aug 31, 2012	22.31	22.32	21.70	22.14
3971	NASDAQ	ARTNA	Thu, Aug 30, 2012	22.42	22.48	22.06	22.09
3970	NASDAQ	ARTNA	Wed, Aug 29, 2012	22.20	22.49	21.86	22.47
3969	NASDAQ	ARTNA	Tue, Aug 28, 2012	22.03	22.38	21.75	22.37
3968	NASDAQ	ARTNA	Mon, Aug 27, 2012	21.83	22.09	21.74	21.97
3967	NASDAQ	ARTNA	Fri, Aug 24, 2012	21.82	22.12	21.64	21.73
3966	NASDAQ	ARTNA	Thu, Aug 23, 2012	22.08	22.08	21.69	21.70
3965	NASDAQ	ARTNA	Wed, Aug 22, 2012	22.34	22.34	21.80	22.03
3964	NASDAQ	ARTNA	Tue, Aug 21, 2012	22.35	22.80	22.01	22.34
3963	NASDAQ	ARTNA	Mon, Aug 20, 2012	22.89	22.89	21.99	22.30
3962	NASDAQ	ARTNA	Fri, Aug 17, 2012	22.30	22.83	21.98	22.83
3961	NASDAQ	ARTNA	Thu, Aug 16, 2012	22.23	22.30	21.65	22.30
3960	NASDAQ	ARTNA	Wed, Aug 15, 2012	21.83	22.40	21.56	22.37
3959	NASDAQ	ARTNA	Tue, Aug 14, 2012	22.10	22.49	21.77	21.96
3958	NASDAQ	ARTNA	Mon, Aug 13, 2012	21.82	22.11	21.54	22.04
3957	NASDAQ	ARTNA	Fri, Aug 10, 2012	22.12	22.28	21.41	21.78
3956	NASDAQ	ARTNA	Thu, Aug 9, 2012	21.83	22.50	21.25	22.19
3955	NASDAQ	ARTNA	Wed, Aug 8, 2012	22.59	22.97	21.81	21.94
3954	NASDAQ	ARTNA	Tue, Aug 7, 2012	22.31	23.10	22.31	22.55
3953	NASDAQ	ARTNA	Mon, Aug 6, 2012	22.00	22.37	21.81	22.21
3952	NASDAQ	ARTNA	Fri, Aug 3, 2012	21.79	21.98	21.37	21.95
3951	NASDAQ	ARTNA	Thu, Aug 2, 2012	21.32	21.60	21.14	21.37
3950	NASDAQ	ARTNA	Wed, Aug 1, 2012	21.67	21.75	21.28	21.28
3949	NASDAQ	ARTNA	Tue, Jul 31, 2012	21.73	21.75	21.21	21.52
3948	NASDAQ	ARTNA	Mon, Jul 30, 2012	21.59	21.75	21.45	21.75
3947	NASDAQ	ARTNA	Fri, Jul 27, 2012	21.50	21.68	21.25	21.67
3946	NASDAQ	ARTNA	Thu, Jul 26, 2012	21.58	21.58	21.36	21.46
3945	NASDAQ	ARTNA	Wed, Jul 25, 2012	21.52	21.58	21.15	21.43
3944	NASDAQ	ARTNA	Tue, Jul 24, 2012	20.81	21.58	20.81	21.36
3943	NASDAQ	ARTNA	Mon, Jul 23, 2012	21.00	21.10	20.48	20.65
3942	NASDAQ	ARTNA	Fri, Jul 20, 2012	21.09	21.26	21.08	21.10
3941	NASDAQ	ARTNA	Thu, Jul 19, 2012	21.24	21.34	21.11	21.18
3940	NASDAQ	ARTNA	Wed, Jul 18, 2012	21.22	21.49	21.16	21.24
3939	NASDAQ	ARTNA	Tue, Jul 17, 2012	21.58	21.59	21.13	21.14
3938	NASDAQ	ARTNA	Mon, Jul 16, 2012	21.48	21.74	21.37	21.39
3937	NASDAQ	ARTNA	Fri, Jul 13, 2012	21.65	21.73	21.29	21.63
3936	NASDAQ	ARTNA	Thu, Jul 12, 2012	21.46	21.74	21.17	21.72
3935	NASDAQ	ARTNA	Wed, Jul 11, 2012	21.60	21.77	21.35	21.47
3934	NASDAQ	ARTNA	Tue, Jul 10, 2012	21.53	21.68	21.18	21.50
3933	NASDAQ	ARTNA	Mon, Jul 9, 2012	21.58	21.78	21.31	21.49
3932	NASDAQ	ARTNA	Fri, Jul 6, 2012	21.40	21.77	21.39	21.69
3931	NASDAQ	ARTNA	Thu, Jul 5, 2012	21.67	21.71	21.26	21.59
3930	NASDAQ	ARTNA	Tue, Jul 3, 2012	21.52	21.79	21.16	21.79
3929	NASDAQ	ARTNA	Mon, Jul 2, 2012	21.50	21.79	21.03	21.63
3928	NASDAQ	ARTNA	Fri, Jun 29, 2012	21.64	21.70	21.01	21.54
3927	NASDAQ	ARTNA	Thu, Jun 28, 2012	21.35	21.72	20.98	21.21
3926	NASDAQ	ARTNA	Wed, Jun 27, 2012	20.50	21.09	20.50	20.80
3925	NASDAQ	ARTNA	Tue, Jun 26, 2012	20.87	20.87	20.22	20.55
3924	NASDAQ	ARTNA	Mon, Jun 25, 2012	20.40	20.85	20.01	20.73
3923	NASDAQ	ARTNA	Fri, Jun 22, 2012	19.53	20.64	19.52	20.63
3922	NASDAQ	ARTNA	Thu, Jun 21, 2012	19.76	19.95	19.51	19.51
3921	NASDAQ	ARTNA	Wed, Jun 20, 2012	19.73	19.95	19.64	19.66
3920	NASDAQ	ARTNA	Tue, Jun 19, 2012	19.65	19.73	19.49	19.72
3919	NASDAQ	ARTNA	Mon, Jun 18, 2012	19.50	19.65	19.28	19.63
3918	NASDAQ	ARTNA	Fri, Jun 15, 2012	19.62	19.62	19.45	19.58
3917	NASDAQ	ARTNA	Thu, Jun 14, 2012	19.21	19.60	19.21	19.59
3916	NASDAQ	ARTNA	Wed, Jun 13, 2012	19.54	19.60	19.20	19.21
3915	NASDAQ	ARTNA	Tue, Jun 12, 2012	19.43	19.62	19.34	19.50
3914	NASDAQ	ARTNA	Mon, Jun 11, 2012	19.62	19.62	19.23	19.44
3913	NASDAQ	ARTNA	Fri, Jun 8, 2012	19.40	19.62	19.29	19.62
3912	NASDAQ	ARTNA	Thu, Jun 7, 2012	19.62	19.62	19.44	19.49
3911	NASDAQ	ARTNA	Wed, Jun 6, 2012	19.50	19.62	19.38	19.60
3910	NASDAQ	ARTNA	Tue, Jun 5, 2012	19.30	19.58	19.24	19.50
3909	NASDAQ	ARTNA	Mon, Jun 4, 2012	18.94	19.54	18.94	19.32
3908	NASDAQ	ARTNA	Fri, Jun 1, 2012	18.69	19.55	18.69	18.74
3907	NASDAQ	ARTNA	Thu, May 31, 2012	18.89	19.15	18.66	18.66
3906	NASDAQ	ARTNA	Wed, May 30, 2012	19.05	19.18	18.75	18.75
3905	NASDAQ	ARTNA	Tue, May 29, 2012	19.41	19.41	19.05	19.12
3904	NASDAQ	ARTNA	Fri, May 25, 2012	19.57	19.57	19.20	19.24
3903	NASDAQ	ARTNA	Thu, May 24, 2012	19.30	19.48	19.20	19.40
3902	NASDAQ	ARTNA	Wed, May 23, 2012	19.40	19.60	19.16	19.19
3901	NASDAQ	ARTNA	Tue, May 22, 2012	19.60	19.63	19.37	19.45
3900	NASDAQ	ARTNA	Mon, May 21, 2012	19.57	19.60	19.50	19.55
3899	NASDAQ	ARTNA	Fri, May 18, 2012	19.37	19.58	19.23	19.47
3898	NASDAQ	ARTNA	Thu, May 17, 2012	19.22	19.60	19.22	19.46
3897	NASDAQ	ARTNA	Wed, May 16, 2012	19.52	19.59	19.21	19.31
3896	NASDAQ	ARTNA	Tue, May 15, 2012	19.55	19.58	19.38	19.42
3895	NASDAQ	ARTNA	Mon, May 14, 2012	19.39	19.60	19.27	19.50
3894	NASDAQ	ARTNA	Fri, May 11, 2012	19.37	19.44	19.04	19.42
3893	NASDAQ	ARTNA	Thu, May 10, 2012	19.06	19.24	19.00	19.24
3892	NASDAQ	ARTNA	Wed, May 9, 2012	18.79	19.18	18.78	19.01
3891	NASDAQ	ARTNA	Tue, May 8, 2012	18.60	19.05	18.49	18.83
3890	NASDAQ	ARTNA	Mon, May 7, 2012	18.28	18.78	18.28	18.55
3889	NASDAQ	ARTNA	Fri, May 4, 2012	18.87	18.87	18.43	18.43
3888	NASDAQ	ARTNA	Thu, May 3, 2012	18.81	18.94	18.62	18.67
3887	NASDAQ	ARTNA	Wed, May 2, 2012	18.53	18.87	18.53	18.82
3886	NASDAQ	ARTNA	Tue, May 1, 2012	19.15	19.33	18.53	18.53
3885	NASDAQ	ARTNA	Mon, Apr 30, 2012	19.41	19.41	19.09	19.09
3884	NASDAQ	ARTNA	Fri, Apr 27, 2012	19.50	19.50	19.34	19.49
3883	NASDAQ	ARTNA	Thu, Apr 26, 2012	19.36	19.48	19.19	19.48
3882	NASDAQ	ARTNA	Wed, Apr 25, 2012	19.25	19.50	19.13	19.49
3881	NASDAQ	ARTNA	Tue, Apr 24, 2012	18.82	19.14	18.80	19.12
3880	NASDAQ	ARTNA	Mon, Apr 23, 2012	19.00	19.13	18.67	18.67
3879	NASDAQ	ARTNA	Fri, Apr 20, 2012	19.28	19.38	19.05	19.20
3878	NASDAQ	ARTNA	Thu, Apr 19, 2012	19.17	19.20	18.78	18.78
3877	NASDAQ	ARTNA	Wed, Apr 18, 2012	19.10	19.25	19.08	19.16
3876	NASDAQ	ARTNA	Tue, Apr 17, 2012	18.91	19.22	18.91	19.13
3875	NASDAQ	ARTNA	Mon, Apr 16, 2012	18.64	18.80	18.55	18.79
3874	NASDAQ	ARTNA	Fri, Apr 13, 2012	18.87	18.87	18.44	18.49
3873	NASDAQ	ARTNA	Thu, Apr 12, 2012	18.66	19.05	18.54	18.91
3872	NASDAQ	ARTNA	Wed, Apr 11, 2012	18.99	19.22	18.50	18.69
3871	NASDAQ	ARTNA	Tue, Apr 10, 2012	18.75	19.10	18.41	18.49
3870	NASDAQ	ARTNA	Mon, Apr 9, 2012	18.88	19.00	18.66	18.66
3869	NASDAQ	ARTNA	Thu, Apr 5, 2012	19.26	19.37	19.07	19.07
3868	NASDAQ	ARTNA	Wed, Apr 4, 2012	19.27	19.48	19.23	19.23
3867	NASDAQ	ARTNA	Tue, Apr 3, 2012	19.27	19.48	19.07	19.31
3866	NASDAQ	ARTNA	Mon, Apr 2, 2012	18.82	19.44	18.82	19.29
3865	NASDAQ	ARTNA	Fri, Mar 30, 2012	19.10	19.12	18.75	18.79
3864	NASDAQ	ARTNA	Thu, Mar 29, 2012	18.77	19.16	18.63	19.08
3863	NASDAQ	ARTNA	Wed, Mar 28, 2012	19.01	19.08	18.80	18.85
3862	NASDAQ	ARTNA	Tue, Mar 27, 2012	19.13	19.25	19.01	19.12
3861	NASDAQ	ARTNA	Mon, Mar 26, 2012	19.12	19.20	18.97	19.20
3860	NASDAQ	ARTNA	Fri, Mar 23, 2012	18.84	19.10	18.84	19.07
3859	NASDAQ	ARTNA	Thu, Mar 22, 2012	18.96	19.10	18.80	18.96
3858	NASDAQ	ARTNA	Wed, Mar 21, 2012	19.02	19.13	19.00	19.05
3857	NASDAQ	ARTNA	Tue, Mar 20, 2012	18.94	19.20	18.90	19.01
3856	NASDAQ	ARTNA	Mon, Mar 19, 2012	19.01	19.10	18.80	19.04
3855	NASDAQ	ARTNA	Fri, Mar 16, 2012	19.20	19.30	19.01	19.12
3854	NASDAQ	ARTNA	Thu, Mar 15, 2012	19.25	19.32	19.08	19.18
3853	NASDAQ	ARTNA	Wed, Mar 14, 2012	19.51	19.57	19.25	19.31
3852	NASDAQ	ARTNA	Tue, Mar 13, 2012	19.41	19.60	19.25	19.60
3851	NASDAQ	ARTNA	Mon, Mar 12, 2012	19.24	19.37	19.17	19.23
3850	NASDAQ	ARTNA	Fri, Mar 9, 2012	18.95	19.44	18.95	19.22
3849	NASDAQ	ARTNA	Thu, Mar 8, 2012	19.15	19.15	18.75	18.99
3848	NASDAQ	ARTNA	Wed, Mar 7, 2012	18.58	19.17	18.58	19.16
3847	NASDAQ	ARTNA	Tue, Mar 6, 2012	18.77	18.77	18.50	18.67
3846	NASDAQ	ARTNA	Mon, Mar 5, 2012	18.87	18.96	18.65	18.90
3845	NASDAQ	ARTNA	Fri, Mar 2, 2012	19.16	19.25	18.81	18.95
3844	NASDAQ	ARTNA	Thu, Mar 1, 2012	19.11	19.34	19.00	19.05
3843	NASDAQ	ARTNA	Wed, Feb 29, 2012	19.33	19.33	19.00	19.10
3842	NASDAQ	ARTNA	Tue, Feb 28, 2012	19.10	19.26	19.06	19.16
3841	NASDAQ	ARTNA	Mon, Feb 27, 2012	19.25	19.38	19.06	19.17
3840	NASDAQ	ARTNA	Fri, Feb 24, 2012	19.28	19.42	19.27	19.30
3839	NASDAQ	ARTNA	Thu, Feb 23, 2012	19.28	19.49	19.13	19.49
3838	NASDAQ	ARTNA	Wed, Feb 22, 2012	19.49	19.49	19.21	19.21
3837	NASDAQ	ARTNA	Tue, Feb 21, 2012	19.33	19.50	19.27	19.45
3836	NASDAQ	ARTNA	Fri, Feb 17, 2012	19.50	19.50	19.33	19.42
3835	NASDAQ	ARTNA	Thu, Feb 16, 2012	19.29	19.60	19.19	19.49
3834	NASDAQ	ARTNA	Wed, Feb 15, 2012	19.50	19.67	19.18	19.18
3833	NASDAQ	ARTNA	Tue, Feb 14, 2012	19.24	19.64	19.10	19.50
3832	NASDAQ	ARTNA	Mon, Feb 13, 2012	19.35	19.48	19.16	19.17
3831	NASDAQ	ARTNA	Fri, Feb 10, 2012	19.23	19.32	19.05	19.17
3830	NASDAQ	ARTNA	Thu, Feb 9, 2012	19.34	19.41	19.20	19.29
3829	NASDAQ	ARTNA	Wed, Feb 8, 2012	19.30	19.32	19.00	19.32
3828	NASDAQ	ARTNA	Tue, Feb 7, 2012	19.14	19.51	18.80	19.26
3827	NASDAQ	ARTNA	Mon, Feb 6, 2012	19.58	19.72	18.81	19.29
3826	NASDAQ	ARTNA	Fri, Feb 3, 2012	19.50	19.64	19.47	19.64
3825	NASDAQ	ARTNA	Thu, Feb 2, 2012	19.28	19.48	19.21	19.48
3824	NASDAQ	ARTNA	Wed, Feb 1, 2012	18.92	19.29	18.73	19.29
3823	NASDAQ	ARTNA	Tue, Jan 31, 2012	19.03	19.10	18.75	18.91
3822	NASDAQ	ARTNA	Mon, Jan 30, 2012	18.96	19.05	18.66	18.91
3821	NASDAQ	ARTNA	Fri, Jan 27, 2012	18.91	19.03	18.60	19.03
3820	NASDAQ	ARTNA	Thu, Jan 26, 2012	19.02	19.09	18.70	18.94
3819	NASDAQ	ARTNA	Wed, Jan 25, 2012	19.02	19.06	18.90	19.03
3818	NASDAQ	ARTNA	Tue, Jan 24, 2012	18.91	19.21	18.80	18.96
3817	NASDAQ	ARTNA	Mon, Jan 23, 2012	18.74	19.00	18.61	19.00
3816	NASDAQ	ARTNA	Fri, Jan 20, 2012	18.78	18.87	18.50	18.85
3815	NASDAQ	ARTNA	Thu, Jan 19, 2012	18.89	18.91	18.53	18.75
3814	NASDAQ	ARTNA	Wed, Jan 18, 2012	18.61	18.88	18.51	18.82
3813	NASDAQ	ARTNA	Tue, Jan 17, 2012	18.69	18.89	18.50	18.51
3812	NASDAQ	ARTNA	Fri, Jan 13, 2012	18.53	18.75	18.53	18.68
3811	NASDAQ	ARTNA	Thu, Jan 12, 2012	18.75	18.80	18.51	18.72
3810	NASDAQ	ARTNA	Wed, Jan 11, 2012	18.75	18.75	18.49	18.74
3809	NASDAQ	ARTNA	Tue, Jan 10, 2012	18.67	18.75	18.60	18.75
3808	NASDAQ	ARTNA	Mon, Jan 9, 2012	18.50	18.65	18.40	18.56
3807	NASDAQ	ARTNA	Fri, Jan 6, 2012	18.34	18.47	18.20	18.44
3806	NASDAQ	ARTNA	Thu, Jan 5, 2012	18.53	18.86	18.30	18.33
3805	NASDAQ	ARTNA	Wed, Jan 4, 2012	19.06	19.25	18.72	18.72
3804	NASDAQ	ARTNA	Tue, Jan 3, 2012	18.98	19.25	18.74	19.20
3803	NASDAQ	ARTNA	Fri, Dec 30, 2011	18.68	18.84	18.60	18.83
3802	NASDAQ	ARTNA	Thu, Dec 29, 2011	18.75	18.80	18.56	18.80
3801	NASDAQ	ARTNA	Wed, Dec 28, 2011	18.83	18.89	18.57	18.59
3800	NASDAQ	ARTNA	Tue, Dec 27, 2011	18.68	18.89	18.68	18.83
3799	NASDAQ	ARTNA	Fri, Dec 23, 2011	18.74	18.81	18.64	18.81
3798	NASDAQ	ARTNA	Thu, Dec 22, 2011	18.94	18.94	18.47	18.78
3797	NASDAQ	ARTNA	Wed, Dec 21, 2011	18.82	18.89	18.71	18.89
3796	NASDAQ	ARTNA	Tue, Dec 20, 2011	18.71	18.83	18.51	18.82
3795	NASDAQ	ARTNA	Mon, Dec 19, 2011	18.66	18.74	18.46	18.52
3794	NASDAQ	ARTNA	Fri, Dec 16, 2011	18.50	18.67	18.15	18.49
3793	NASDAQ	ARTNA	Thu, Dec 15, 2011	18.55	18.55	18.39	18.50
3792	NASDAQ	ARTNA	Wed, Dec 14, 2011	17.95	18.53	17.95	18.53
3791	NASDAQ	ARTNA	Tue, Dec 13, 2011	18.23	18.37	17.94	17.95
3790	NASDAQ	ARTNA	Mon, Dec 12, 2011	18.13	18.39	18.00	18.08
3789	NASDAQ	ARTNA	Fri, Dec 9, 2011	18.20	18.40	18.13	18.30
3788	NASDAQ	ARTNA	Thu, Dec 8, 2011	18.43	18.60	18.18	18.21
3787	NASDAQ	ARTNA	Wed, Dec 7, 2011	18.34	18.60	18.23	18.60
3786	NASDAQ	ARTNA	Tue, Dec 6, 2011	18.27	18.43	18.04	18.43
3785	NASDAQ	ARTNA	Mon, Dec 5, 2011	18.27	18.35	18.06	18.35
3784	NASDAQ	ARTNA	Fri, Dec 2, 2011	18.47	18.47	17.80	18.11
3783	NASDAQ	ARTNA	Thu, Dec 1, 2011	18.20	18.50	18.19	18.25
3782	NASDAQ	ARTNA	Wed, Nov 30, 2011	18.40	18.50	18.20	18.50
3781	NASDAQ	ARTNA	Tue, Nov 29, 2011	18.25	18.30	18.16	18.16
3780	NASDAQ	ARTNA	Mon, Nov 28, 2011	18.39	18.39	17.98	18.25
3779	NASDAQ	ARTNA	Fri, Nov 25, 2011	17.75	18.31	17.75	18.00
3778	NASDAQ	ARTNA	Wed, Nov 23, 2011	18.04	18.04	17.75	17.75
3777	NASDAQ	ARTNA	Tue, Nov 22, 2011	18.05	18.05	17.94	17.95
3776	NASDAQ	ARTNA	Mon, Nov 21, 2011	17.76	18.06	17.76	17.95
3775	NASDAQ	ARTNA	Fri, Nov 18, 2011	17.79	18.02	17.79	17.93
3774	NASDAQ	ARTNA	Thu, Nov 17, 2011	17.75	18.00	17.75	17.80
3773	NASDAQ	ARTNA	Wed, Nov 16, 2011	18.05	18.17	17.75	17.75
3772	NASDAQ	ARTNA	Tue, Nov 15, 2011	17.80	18.15	17.80	18.10
3771	NASDAQ	ARTNA	Mon, Nov 14, 2011	18.27	18.27	17.72	17.79
3770	NASDAQ	ARTNA	Fri, Nov 11, 2011	17.91	18.37	17.91	18.19
3769	NASDAQ	ARTNA	Thu, Nov 10, 2011	18.27	18.27	17.84	17.91
3768	NASDAQ	ARTNA	Wed, Nov 9, 2011	17.97	18.13	17.95	18.06
3767	NASDAQ	ARTNA	Tue, Nov 8, 2011	18.22	18.34	18.04	18.23
3766	NASDAQ	ARTNA	Mon, Nov 7, 2011	18.41	18.49	18.21	18.37
3765	NASDAQ	ARTNA	Fri, Nov 4, 2011	18.68	18.68	18.29	18.35
3764	NASDAQ	ARTNA	Thu, Nov 3, 2011	18.78	18.78	18.62	18.70
3763	NASDAQ	ARTNA	Wed, Nov 2, 2011	18.46	18.75	18.32	18.69
3762	NASDAQ	ARTNA	Tue, Nov 1, 2011	18.00	18.44	18.00	18.35
3761	NASDAQ	ARTNA	Mon, Oct 31, 2011	18.20	18.63	18.01	18.20
3760	NASDAQ	ARTNA	Fri, Oct 28, 2011	18.63	18.78	18.20	18.47
3759	NASDAQ	ARTNA	Thu, Oct 27, 2011	18.71	18.80	18.02	18.74
3758	NASDAQ	ARTNA	Wed, Oct 26, 2011	18.17	18.70	18.01	18.62
3757	NASDAQ	ARTNA	Tue, Oct 25, 2011	18.27	18.44	17.95	17.97
3756	NASDAQ	ARTNA	Mon, Oct 24, 2011	18.57	18.65	18.21	18.30
3755	NASDAQ	ARTNA	Fri, Oct 21, 2011	18.43	18.53	18.13	18.53
3754	NASDAQ	ARTNA	Thu, Oct 20, 2011	18.05	18.35	18.05	18.26
3753	NASDAQ	ARTNA	Wed, Oct 19, 2011	18.37	18.37	17.92	17.95
3752	NASDAQ	ARTNA	Tue, Oct 18, 2011	17.98	18.43	17.81	18.32
3751	NASDAQ	ARTNA	Mon, Oct 17, 2011	18.38	18.38	17.90	17.95
3750	NASDAQ	ARTNA	Fri, Oct 14, 2011	18.44	18.45	18.25	18.45
3749	NASDAQ	ARTNA	Thu, Oct 13, 2011	17.91	18.42	17.91	18.41
3748	NASDAQ	ARTNA	Wed, Oct 12, 2011	17.70	18.17	17.68	18.15
3747	NASDAQ	ARTNA	Tue, Oct 11, 2011	17.53	17.72	17.33	17.72
3746	NASDAQ	ARTNA	Mon, Oct 10, 2011	17.39	17.62	16.90	17.59
3745	NASDAQ	ARTNA	Fri, Oct 7, 2011	17.68	17.68	17.26	17.29
3744	NASDAQ	ARTNA	Thu, Oct 6, 2011	17.59	17.66	17.30	17.63
3743	NASDAQ	ARTNA	Wed, Oct 5, 2011	17.70	17.70	17.50	17.68
3742	NASDAQ	ARTNA	Tue, Oct 4, 2011	17.27	17.70	17.23	17.69
3741	NASDAQ	ARTNA	Mon, Oct 3, 2011	17.32	17.70	17.15	17.15
3740	NASDAQ	ARTNA	Fri, Sep 30, 2011	16.82	17.69	16.82	17.51
3739	NASDAQ	ARTNA	Thu, Sep 29, 2011	16.80	17.22	16.57	17.02
3738	NASDAQ	ARTNA	Wed, Sep 28, 2011	16.97	16.99	16.50	16.50
3737	NASDAQ	ARTNA	Tue, Sep 27, 2011	17.01	17.07	16.52	16.97
3736	NASDAQ	ARTNA	Mon, Sep 26, 2011	16.67	16.99	16.12	16.74
3735	NASDAQ	ARTNA	Fri, Sep 23, 2011	16.42	16.69	16.03	16.38
3734	NASDAQ	ARTNA	Thu, Sep 22, 2011	16.23	17.70	15.16	16.39
3733	NASDAQ	ARTNA	Wed, Sep 21, 2011	16.75	17.05	16.45	16.47
3732	NASDAQ	ARTNA	Tue, Sep 20, 2011	17.28	17.28	16.71	16.78
3731	NASDAQ	ARTNA	Mon, Sep 19, 2011	17.01	17.22	16.80	16.96
3730	NASDAQ	ARTNA	Fri, Sep 16, 2011	17.23	17.29	16.99	17.08
3729	NASDAQ	ARTNA	Thu, Sep 15, 2011	17.25	17.61	16.93	17.17
3728	NASDAQ	ARTNA	Wed, Sep 14, 2011	17.09	17.18	16.84	17.06
3727	NASDAQ	ARTNA	Tue, Sep 13, 2011	17.13	17.26	16.83	17.02
3726	NASDAQ	ARTNA	Mon, Sep 12, 2011	17.17	17.23	16.52	17.11
3725	NASDAQ	ARTNA	Fri, Sep 9, 2011	17.64	17.70	17.16	17.17
3724	NASDAQ	ARTNA	Thu, Sep 8, 2011	17.76	18.06	17.64	17.70
3723	NASDAQ	ARTNA	Wed, Sep 7, 2011	17.91	17.91	17.62	17.76
3722	NASDAQ	ARTNA	Tue, Sep 6, 2011	17.75	18.24	17.50	17.96
3721	NASDAQ	ARTNA	Fri, Sep 2, 2011	17.75	18.18	17.75	17.86
3720	NASDAQ	ARTNA	Thu, Sep 1, 2011	18.25	18.25	17.76	17.94
3719	NASDAQ	ARTNA	Wed, Aug 31, 2011	18.03	18.35	17.76	18.22
3718	NASDAQ	ARTNA	Tue, Aug 30, 2011	17.87	18.14	17.74	17.95
3717	NASDAQ	ARTNA	Mon, Aug 29, 2011	18.01	18.13	17.63	18.05
3716	NASDAQ	ARTNA	Fri, Aug 26, 2011	17.99	18.00	17.82	17.94
3715	NASDAQ	ARTNA	Thu, Aug 25, 2011	18.04	18.24	17.57	17.67
3714	NASDAQ	ARTNA	Wed, Aug 24, 2011	17.46	18.04	17.46	18.04
3713	NASDAQ	ARTNA	Tue, Aug 23, 2011	17.51	17.81	17.46	17.79
3712	NASDAQ	ARTNA	Mon, Aug 22, 2011	17.46	17.71	17.14	17.35
3711	NASDAQ	ARTNA	Fri, Aug 19, 2011	17.32	17.52	17.08	17.09
3710	NASDAQ	ARTNA	Thu, Aug 18, 2011	17.51	17.78	17.18	17.25
3709	NASDAQ	ARTNA	Wed, Aug 17, 2011	17.77	17.90	17.38	17.68
3708	NASDAQ	ARTNA	Tue, Aug 16, 2011	17.80	17.90	17.50	17.63
3707	NASDAQ	ARTNA	Mon, Aug 15, 2011	17.60	17.96	17.50	17.87
3706	NASDAQ	ARTNA	Fri, Aug 12, 2011	18.05	18.06	17.50	17.56
3705	NASDAQ	ARTNA	Thu, Aug 11, 2011	17.43	18.29	17.30	17.77
3704	NASDAQ	ARTNA	Wed, Aug 10, 2011	18.04	18.41	17.08	17.14
3703	NASDAQ	ARTNA	Tue, Aug 9, 2011	18.14	18.76	17.40	18.46
3702	NASDAQ	ARTNA	Mon, Aug 8, 2011	17.40	18.48	17.40	17.62
3701	NASDAQ	ARTNA	Fri, Aug 5, 2011	17.96	18.44	17.90	18.05
3700	NASDAQ	ARTNA	Thu, Aug 4, 2011	18.53	18.53	17.90	17.90
3699	NASDAQ	ARTNA	Wed, Aug 3, 2011	18.55	18.96	17.92	18.84
3698	NASDAQ	ARTNA	Tue, Aug 2, 2011	18.64	18.64	18.40	18.41
3697	NASDAQ	ARTNA	Mon, Aug 1, 2011	18.59	18.59	18.18	18.31
3696	NASDAQ	ARTNA	Fri, Jul 29, 2011	18.38	18.38	18.01	18.20
3695	NASDAQ	ARTNA	Thu, Jul 28, 2011	18.45	18.45	18.00	18.21
3694	NASDAQ	ARTNA	Wed, Jul 27, 2011	18.23	18.30	18.08	18.11
3693	NASDAQ	ARTNA	Tue, Jul 26, 2011	18.43	18.57	18.04	18.33
3692	NASDAQ	ARTNA	Mon, Jul 25, 2011	18.34	18.51	18.32	18.42
3691	NASDAQ	ARTNA	Fri, Jul 22, 2011	18.45	18.70	18.35	18.57
3690	NASDAQ	ARTNA	Thu, Jul 21, 2011	18.38	18.65	18.30	18.45
3689	NASDAQ	ARTNA	Wed, Jul 20, 2011	18.47	18.47	18.32	18.39
3688	NASDAQ	ARTNA	Tue, Jul 19, 2011	18.53	18.60	18.25	18.54
3687	NASDAQ	ARTNA	Mon, Jul 18, 2011	18.51	18.55	18.38	18.50
3686	NASDAQ	ARTNA	Fri, Jul 15, 2011	18.65	18.65	18.25	18.50
3685	NASDAQ	ARTNA	Thu, Jul 14, 2011	19.48	19.50	19.20	19.29
3684	NASDAQ	ARTNA	Wed, Jul 13, 2011	19.13	19.50	18.99	19.49
3683	NASDAQ	ARTNA	Tue, Jul 12, 2011	18.91	19.19	18.66	19.06
3682	NASDAQ	ARTNA	Mon, Jul 11, 2011	18.51	19.11	18.51	18.78
3681	NASDAQ	ARTNA	Fri, Jul 8, 2011	18.72	18.78	18.57	18.67
3680	NASDAQ	ARTNA	Thu, Jul 7, 2011	18.29	18.89	18.29	18.89
3679	NASDAQ	ARTNA	Wed, Jul 6, 2011	18.21	18.37	18.12	18.29
3678	NASDAQ	ARTNA	Tue, Jul 5, 2011	18.23	18.25	18.10	18.17
3677	NASDAQ	ARTNA	Fri, Jul 1, 2011	18.01	18.25	18.01	18.22
3676	NASDAQ	ARTNA	Thu, Jun 30, 2011	18.05	18.15	17.99	18.02
3675	NASDAQ	ARTNA	Wed, Jun 29, 2011	17.90	18.03	17.88	18.02
3674	NASDAQ	ARTNA	Tue, Jun 28, 2011	18.02	18.09	17.69	17.86
3673	NASDAQ	ARTNA	Mon, Jun 27, 2011	18.02	18.18	17.98	18.00
3672	NASDAQ	ARTNA	Fri, Jun 24, 2011	19.12	19.12	17.88	17.91
3671	NASDAQ	ARTNA	Thu, Jun 23, 2011	18.70	18.92	18.70	18.83
3670	NASDAQ	ARTNA	Wed, Jun 22, 2011	19.39	19.39	18.72	18.74
3669	NASDAQ	ARTNA	Tue, Jun 21, 2011	19.30	19.64	18.64	19.64
3668	NASDAQ	ARTNA	Mon, Jun 20, 2011	19.22	19.30	19.05	19.28
3667	NASDAQ	ARTNA	Fri, Jun 17, 2011	19.04	19.29	19.04	19.22
3666	NASDAQ	ARTNA	Thu, Jun 16, 2011	18.62	19.08	18.62	19.00
3665	NASDAQ	ARTNA	Wed, Jun 15, 2011	18.07	19.04	18.07	18.49
3664	NASDAQ	ARTNA	Tue, Jun 14, 2011	18.46	18.78	18.25	18.78
3663	NASDAQ	ARTNA	Mon, Jun 13, 2011	18.61	18.88	18.30	18.39
3662	NASDAQ	ARTNA	Fri, Jun 10, 2011	18.36	18.66	18.36	18.48
3661	NASDAQ	ARTNA	Thu, Jun 9, 2011	18.67	18.88	18.41	18.49
3660	NASDAQ	ARTNA	Wed, Jun 8, 2011	18.63	18.69	18.54	18.64
3659	NASDAQ	ARTNA	Tue, Jun 7, 2011	18.52	18.73	18.27	18.68
3658	NASDAQ	ARTNA	Mon, Jun 6, 2011	18.76	18.76	18.48	18.48
3657	NASDAQ	ARTNA	Fri, Jun 3, 2011	19.06	19.06	18.61	18.68
3656	NASDAQ	ARTNA	Thu, Jun 2, 2011	19.25	19.29	19.05	19.05
3655	NASDAQ	ARTNA	Wed, Jun 1, 2011	19.44	19.68	19.15	19.15
3654	NASDAQ	ARTNA	Tue, May 31, 2011	19.18	19.75	19.11	19.66
3653	NASDAQ	ARTNA	Fri, May 27, 2011	19.47	19.47	19.29	19.45
3652	NASDAQ	ARTNA	Thu, May 26, 2011	19.43	19.51	19.27	19.51
3651	NASDAQ	ARTNA	Wed, May 25, 2011	18.91	19.55	18.90	19.55
3650	NASDAQ	ARTNA	Tue, May 24, 2011	19.20	19.26	18.99	19.00
3649	NASDAQ	ARTNA	Mon, May 23, 2011	19.23	19.49	19.16	19.16
3648	NASDAQ	ARTNA	Fri, May 20, 2011	19.47	19.49	19.36	19.36
3647	NASDAQ	ARTNA	Thu, May 19, 2011	19.40	19.65	19.18	19.45
3646	NASDAQ	ARTNA	Wed, May 18, 2011	19.01	19.40	19.01	19.39
3645	NASDAQ	ARTNA	Tue, May 17, 2011	18.96	19.27	18.96	19.06
3644	NASDAQ	ARTNA	Mon, May 16, 2011	19.25	19.42	18.90	18.93
3643	NASDAQ	ARTNA	Fri, May 13, 2011	19.43	19.43	19.28	19.28
3642	NASDAQ	ARTNA	Thu, May 12, 2011	19.35	19.52	19.35	19.43
3641	NASDAQ	ARTNA	Wed, May 11, 2011	19.13	19.45	19.13	19.34
3640	NASDAQ	ARTNA	Tue, May 10, 2011	19.19	19.19	19.06	19.19
3639	NASDAQ	ARTNA	Mon, May 9, 2011	19.04	19.18	18.98	19.07
3638	NASDAQ	ARTNA	Fri, May 6, 2011	18.75	19.29	18.68	19.15
3637	NASDAQ	ARTNA	Thu, May 5, 2011	19.00	19.19	18.89	18.89
3636	NASDAQ	ARTNA	Wed, May 4, 2011	19.19	19.24	18.91	18.91
3635	NASDAQ	ARTNA	Tue, May 3, 2011	19.19	19.33	19.12	19.12
3634	NASDAQ	ARTNA	Mon, May 2, 2011	19.34	19.48	19.02	19.02
3633	NASDAQ	ARTNA	Fri, Apr 29, 2011	19.29	19.54	19.27	19.54
3632	NASDAQ	ARTNA	Thu, Apr 28, 2011	19.55	19.55	19.37	19.40
3631	NASDAQ	ARTNA	Wed, Apr 27, 2011	19.66	19.74	19.46	19.55
3630	NASDAQ	ARTNA	Tue, Apr 26, 2011	19.75	19.75	19.62	19.74
3629	NASDAQ	ARTNA	Mon, Apr 25, 2011	19.74	19.74	19.55	19.73
3628	NASDAQ	ARTNA	Thu, Apr 21, 2011	19.75	19.75	19.43	19.67
3627	NASDAQ	ARTNA	Wed, Apr 20, 2011	19.65	19.75	19.55	19.73
3626	NASDAQ	ARTNA	Tue, Apr 19, 2011	19.53	19.65	19.40	19.54
3625	NASDAQ	ARTNA	Mon, Apr 18, 2011	19.47	19.54	19.36	19.45
3624	NASDAQ	ARTNA	Fri, Apr 15, 2011	19.59	19.60	19.54	19.56
3623	NASDAQ	ARTNA	Thu, Apr 14, 2011	19.37	19.74	19.37	19.63
3622	NASDAQ	ARTNA	Wed, Apr 13, 2011	19.52	19.54	19.46	19.47
3621	NASDAQ	ARTNA	Tue, Apr 12, 2011	19.32	19.54	19.26	19.42
3620	NASDAQ	ARTNA	Mon, Apr 11, 2011	19.45	19.58	19.26	19.40
3619	NASDAQ	ARTNA	Fri, Apr 8, 2011	19.58	19.64	19.38	19.45
3618	NASDAQ	ARTNA	Thu, Apr 7, 2011	19.59	19.59	19.30	19.43
3617	NASDAQ	ARTNA	Wed, Apr 6, 2011	19.50	19.67	19.45	19.52
3616	NASDAQ	ARTNA	Tue, Apr 5, 2011	19.62	19.62	19.36	19.53
3615	NASDAQ	ARTNA	Mon, Apr 4, 2011	19.70	19.73	19.51	19.71
3614	NASDAQ	ARTNA	Fri, Apr 1, 2011	19.55	19.70	19.49	19.56
3613	NASDAQ	ARTNA	Thu, Mar 31, 2011	19.75	19.75	19.43	19.49
3612	NASDAQ	ARTNA	Wed, Mar 30, 2011	19.30	19.80	19.30	19.78
3611	NASDAQ	ARTNA	Tue, Mar 29, 2011	19.27	19.30	19.21	19.30
3610	NASDAQ	ARTNA	Mon, Mar 28, 2011	18.80	19.27	18.57	19.12
3609	NASDAQ	ARTNA	Fri, Mar 25, 2011	18.91	18.95	17.88	18.73
3608	NASDAQ	ARTNA	Thu, Mar 24, 2011	18.80	18.93	18.71	18.74
3607	NASDAQ	ARTNA	Wed, Mar 23, 2011	19.05	19.05	18.73	18.73
3606	NASDAQ	ARTNA	Tue, Mar 22, 2011	19.17	19.27	19.00	19.07
3605	NASDAQ	ARTNA	Mon, Mar 21, 2011	18.90	19.35	18.90	19.22
3604	NASDAQ	ARTNA	Fri, Mar 18, 2011	19.44	19.44	18.76	18.76
3603	NASDAQ	ARTNA	Thu, Mar 17, 2011	19.65	19.65	19.28	19.43
3602	NASDAQ	ARTNA	Wed, Mar 16, 2011	19.50	19.65	19.46	19.51
3601	NASDAQ	ARTNA	Tue, Mar 15, 2011	19.50	19.68	19.42	19.50
3600	NASDAQ	ARTNA	Mon, Mar 14, 2011	19.47	19.95	19.46	19.55
3599	NASDAQ	ARTNA	Fri, Mar 11, 2011	19.46	19.70	19.46	19.62
3598	NASDAQ	ARTNA	Thu, Mar 10, 2011	19.59	19.64	19.50	19.50
3597	NASDAQ	ARTNA	Wed, Mar 9, 2011	19.61	19.91	19.61	19.91
3596	NASDAQ	ARTNA	Tue, Mar 8, 2011	19.50	19.74	19.50	19.62
3595	NASDAQ	ARTNA	Mon, Mar 7, 2011	19.80	19.82	19.50	19.54
3594	NASDAQ	ARTNA	Fri, Mar 4, 2011	19.80	19.95	19.65	19.77
3593	NASDAQ	ARTNA	Thu, Mar 3, 2011	19.75	19.99	19.55	19.81
3592	NASDAQ	ARTNA	Wed, Mar 2, 2011	19.44	19.75	19.44	19.62
3591	NASDAQ	ARTNA	Tue, Mar 1, 2011	19.60	19.75	19.47	19.49
3590	NASDAQ	ARTNA	Mon, Feb 28, 2011	19.35	19.54	19.35	19.48
3589	NASDAQ	ARTNA	Fri, Feb 25, 2011	19.33	19.39	19.18	19.34
3588	NASDAQ	ARTNA	Thu, Feb 24, 2011	19.26	19.38	19.20	19.38
3587	NASDAQ	ARTNA	Wed, Feb 23, 2011	19.49	19.52	19.15	19.15
3586	NASDAQ	ARTNA	Tue, Feb 22, 2011	19.46	19.55	19.36	19.38
3585	NASDAQ	ARTNA	Fri, Feb 18, 2011	19.49	19.66	19.43	19.54
3584	NASDAQ	ARTNA	Thu, Feb 17, 2011	19.16	19.37	19.16	19.37
3583	NASDAQ	ARTNA	Wed, Feb 16, 2011	19.20	19.34	19.20	19.29
3582	NASDAQ	ARTNA	Tue, Feb 15, 2011	19.28	19.32	19.21	19.27
3581	NASDAQ	ARTNA	Mon, Feb 14, 2011	19.31	19.36	19.23	19.25
3580	NASDAQ	ARTNA	Fri, Feb 11, 2011	19.18	19.34	19.16	19.31
3579	NASDAQ	ARTNA	Thu, Feb 10, 2011	19.18	19.45	19.09	19.16
3578	NASDAQ	ARTNA	Wed, Feb 9, 2011	19.19	19.19	19.03	19.12
3577	NASDAQ	ARTNA	Tue, Feb 8, 2011	19.25	19.32	19.15	19.32
3576	NASDAQ	ARTNA	Mon, Feb 7, 2011	19.25	19.38	19.19	19.27
3575	NASDAQ	ARTNA	Fri, Feb 4, 2011	19.39	19.49	19.23	19.33
3574	NASDAQ	ARTNA	Thu, Feb 3, 2011	19.50	19.66	19.50	19.66
3573	NASDAQ	ARTNA	Wed, Feb 2, 2011	19.40	19.63	19.38	19.52
3572	NASDAQ	ARTNA	Tue, Feb 1, 2011	19.22	19.47	19.17	19.45
3571	NASDAQ	ARTNA	Mon, Jan 31, 2011	19.16	19.29	19.02	19.02
3570	NASDAQ	ARTNA	Fri, Jan 28, 2011	19.48	19.63	19.02	19.02
3569	NASDAQ	ARTNA	Thu, Jan 27, 2011	19.51	19.61	19.29	19.41
3568	NASDAQ	ARTNA	Wed, Jan 26, 2011	19.41	19.60	19.34	19.60
3567	NASDAQ	ARTNA	Tue, Jan 25, 2011	19.07	19.42	19.00	19.31
3566	NASDAQ	ARTNA	Mon, Jan 24, 2011	19.11	19.31	19.07	19.16
3565	NASDAQ	ARTNA	Fri, Jan 21, 2011	19.38	19.62	19.28	19.29
3564	NASDAQ	ARTNA	Thu, Jan 20, 2011	19.44	19.55	19.29	19.29
3563	NASDAQ	ARTNA	Wed, Jan 19, 2011	19.53	19.63	19.35	19.44
3562	NASDAQ	ARTNA	Tue, Jan 18, 2011	19.51	19.62	19.24	19.51
3561	NASDAQ	ARTNA	Fri, Jan 14, 2011	19.24	19.60	19.24	19.54
3560	NASDAQ	ARTNA	Thu, Jan 13, 2011	19.04	19.55	19.04	19.32
3559	NASDAQ	ARTNA	Wed, Jan 12, 2011	19.25	19.25	19.02	19.09
3558	NASDAQ	ARTNA	Tue, Jan 11, 2011	18.98	19.19	18.98	19.19
3557	NASDAQ	ARTNA	Mon, Jan 10, 2011	18.92	19.12	18.92	19.00
3556	NASDAQ	ARTNA	Fri, Jan 7, 2011	18.87	19.25	18.87	19.06
3555	NASDAQ	ARTNA	Thu, Jan 6, 2011	19.12	19.25	18.90	18.92
3554	NASDAQ	ARTNA	Wed, Jan 5, 2011	19.16	19.31	19.05	19.05
3553	NASDAQ	ARTNA	Tue, Jan 4, 2011	19.63	19.63	19.18	19.18
3552	NASDAQ	ARTNA	Mon, Jan 3, 2011	19.03	19.63	18.91	19.62
3551	NASDAQ	ARTNA	Fri, Dec 31, 2010	19.25	19.25	18.95	18.95
3550	NASDAQ	ARTNA	Thu, Dec 30, 2010	18.97	19.27	18.96	19.25
3549	NASDAQ	ARTNA	Wed, Dec 29, 2010	19.00	19.08	18.84	18.93
3548	NASDAQ	ARTNA	Tue, Dec 28, 2010	19.10	19.15	18.80	18.84
3547	NASDAQ	ARTNA	Mon, Dec 27, 2010	19.08	19.21	19.05	19.19
3546	NASDAQ	ARTNA	Thu, Dec 23, 2010	19.03	19.07	18.99	18.99
3545	NASDAQ	ARTNA	Wed, Dec 22, 2010	19.10	19.10	18.82	19.02
3544	NASDAQ	ARTNA	Tue, Dec 21, 2010	18.91	18.96	18.81	18.96
3543	NASDAQ	ARTNA	Mon, Dec 20, 2010	18.84	19.08	18.75	18.81
3542	NASDAQ	ARTNA	Fri, Dec 17, 2010	19.03	19.23	18.81	18.82
3541	NASDAQ	ARTNA	Thu, Dec 16, 2010	18.94	19.21	18.78	19.17
3540	NASDAQ	ARTNA	Wed, Dec 15, 2010	18.75	19.30	18.75	18.94
3539	NASDAQ	ARTNA	Tue, Dec 14, 2010	18.99	19.27	18.99	19.21
3538	NASDAQ	ARTNA	Mon, Dec 13, 2010	18.93	19.00	18.77	18.87
3537	NASDAQ	ARTNA	Fri, Dec 10, 2010	18.69	19.00	18.69	18.98
3536	NASDAQ	ARTNA	Thu, Dec 9, 2010	18.81	18.97	18.76	18.94
3535	NASDAQ	ARTNA	Wed, Dec 8, 2010	19.11	19.17	18.77	18.77
3534	NASDAQ	ARTNA	Tue, Dec 7, 2010	18.97	19.11	18.94	19.02
3533	NASDAQ	ARTNA	Mon, Dec 6, 2010	18.95	19.00	18.76	18.91
3532	NASDAQ	ARTNA	Fri, Dec 3, 2010	18.67	18.96	18.67	18.96
3531	NASDAQ	ARTNA	Thu, Dec 2, 2010	18.66	18.87	18.65	18.79
3530	NASDAQ	ARTNA	Wed, Dec 1, 2010	18.90	18.90	18.66	18.73
3529	NASDAQ	ARTNA	Tue, Nov 30, 2010	18.69	18.89	18.69	18.77
3528	NASDAQ	ARTNA	Mon, Nov 29, 2010	18.72	18.91	18.50	18.91
3527	NASDAQ	ARTNA	Fri, Nov 26, 2010	18.75	18.85	18.75	18.77
3526	NASDAQ	ARTNA	Wed, Nov 24, 2010	18.60	18.80	18.59	18.76
3525	NASDAQ	ARTNA	Tue, Nov 23, 2010	18.71	18.78	18.51	18.53
3524	NASDAQ	ARTNA	Mon, Nov 22, 2010	18.84	18.85	18.60	18.71
3523	NASDAQ	ARTNA	Fri, Nov 19, 2010	18.85	18.85	18.75	18.84
3522	NASDAQ	ARTNA	Thu, Nov 18, 2010	18.73	18.94	18.58	18.78
3521	NASDAQ	ARTNA	Wed, Nov 17, 2010	18.60	18.97	18.51	18.60
3520	NASDAQ	ARTNA	Tue, Nov 16, 2010	18.92	19.00	18.51	18.60
3519	NASDAQ	ARTNA	Mon, Nov 15, 2010	18.63	19.04	18.60	19.01
3518	NASDAQ	ARTNA	Fri, Nov 12, 2010	18.74	18.91	18.50	18.62
3517	NASDAQ	ARTNA	Thu, Nov 11, 2010	18.80	18.98	18.70	18.76
3516	NASDAQ	ARTNA	Wed, Nov 10, 2010	18.80	19.00	18.62	18.76
3515	NASDAQ	ARTNA	Tue, Nov 9, 2010	19.21	19.30	18.62	18.74
3514	NASDAQ	ARTNA	Mon, Nov 8, 2010	19.25	19.45	18.50	19.25
3513	NASDAQ	ARTNA	Fri, Nov 5, 2010	19.23	19.44	19.11	19.33
3512	NASDAQ	ARTNA	Thu, Nov 4, 2010	18.96	19.33	18.72	19.21
3511	NASDAQ	ARTNA	Wed, Nov 3, 2010	19.11	19.16	18.91	19.09
3510	NASDAQ	ARTNA	Tue, Nov 2, 2010	18.99	19.13	18.96	19.08
3509	NASDAQ	ARTNA	Mon, Nov 1, 2010	19.18	19.18	18.78	18.95
3508	NASDAQ	ARTNA	Fri, Oct 29, 2010	19.02	19.23	18.76	19.08
3507	NASDAQ	ARTNA	Thu, Oct 28, 2010	19.14	19.15	18.93	18.99
3506	NASDAQ	ARTNA	Wed, Oct 27, 2010	19.08	19.15	18.93	18.93
3505	NASDAQ	ARTNA	Tue, Oct 26, 2010	19.11	19.19	18.91	19.07
3504	NASDAQ	ARTNA	Mon, Oct 25, 2010	19.17	19.28	18.90	19.10
3503	NASDAQ	ARTNA	Fri, Oct 22, 2010	19.13	19.21	18.82	18.93
3502	NASDAQ	ARTNA	Thu, Oct 21, 2010	19.59	19.59	19.13	19.13
3501	NASDAQ	ARTNA	Wed, Oct 20, 2010	19.36	19.53	19.22	19.50
3500	NASDAQ	ARTNA	Tue, Oct 19, 2010	19.10	19.36	19.10	19.36
3499	NASDAQ	ARTNA	Mon, Oct 18, 2010	19.22	19.36	19.04	19.34
3498	NASDAQ	ARTNA	Fri, Oct 15, 2010	19.25	19.33	19.13	19.31
3497	NASDAQ	ARTNA	Thu, Oct 14, 2010	18.96	19.17	18.96	19.14
3496	NASDAQ	ARTNA	Wed, Oct 13, 2010	18.93	19.08	18.91	19.07
3495	NASDAQ	ARTNA	Tue, Oct 12, 2010	18.88	18.94	18.80	18.91
3494	NASDAQ	ARTNA	Mon, Oct 11, 2010	18.88	19.05	18.81	18.90
3493	NASDAQ	ARTNA	Fri, Oct 8, 2010	19.07	19.08	18.87	18.98
3492	NASDAQ	ARTNA	Thu, Oct 7, 2010	19.16	19.16	18.78	18.92
3491	NASDAQ	ARTNA	Wed, Oct 6, 2010	19.06	19.25	18.76	18.98
3490	NASDAQ	ARTNA	Tue, Oct 5, 2010	19.12	19.20	18.75	19.19
3489	NASDAQ	ARTNA	Mon, Oct 4, 2010	19.05	19.23	18.88	18.88
3488	NASDAQ	ARTNA	Fri, Oct 1, 2010	19.15	19.31	18.84	19.15
3487	NASDAQ	ARTNA	Thu, Sep 30, 2010	18.48	19.08	18.40	19.07
3486	NASDAQ	ARTNA	Wed, Sep 29, 2010	18.30	18.66	18.26	18.60
3485	NASDAQ	ARTNA	Tue, Sep 28, 2010	18.44	18.49	18.22	18.35
3484	NASDAQ	ARTNA	Mon, Sep 27, 2010	18.35	18.44	18.19	18.33
3483	NASDAQ	ARTNA	Fri, Sep 24, 2010	18.10	18.35	17.98	18.35
3482	NASDAQ	ARTNA	Thu, Sep 23, 2010	18.05	18.15	17.80	17.99
3481	NASDAQ	ARTNA	Wed, Sep 22, 2010	18.13	18.14	18.07	18.10
3480	NASDAQ	ARTNA	Tue, Sep 21, 2010	18.40	18.40	18.11	18.21
3479	NASDAQ	ARTNA	Mon, Sep 20, 2010	18.14	18.49	18.14	18.49
3478	NASDAQ	ARTNA	Fri, Sep 17, 2010	18.25	18.25	18.10	18.13
3477	NASDAQ	ARTNA	Thu, Sep 16, 2010	18.07	18.25	17.86	18.25
3476	NASDAQ	ARTNA	Wed, Sep 15, 2010	17.86	18.18	17.70	18.18
3475	NASDAQ	ARTNA	Tue, Sep 14, 2010	17.91	17.91	17.76	17.84
3474	NASDAQ	ARTNA	Mon, Sep 13, 2010	17.90	17.93	17.68	17.93
3473	NASDAQ	ARTNA	Fri, Sep 10, 2010	17.59	17.83	17.58	17.83
3472	NASDAQ	ARTNA	Thu, Sep 9, 2010	17.95	17.95	17.65	17.68
3471	NASDAQ	ARTNA	Wed, Sep 8, 2010	17.95	17.95	17.56	17.84
3470	NASDAQ	ARTNA	Tue, Sep 7, 2010	18.09	18.10	17.86	17.86
3469	NASDAQ	ARTNA	Fri, Sep 3, 2010	18.25	18.25	17.87	18.10
3468	NASDAQ	ARTNA	Thu, Sep 2, 2010	18.08	18.25	17.98	18.25
3467	NASDAQ	ARTNA	Wed, Sep 1, 2010	18.14	18.14	17.81	17.98
3466	NASDAQ	ARTNA	Tue, Aug 31, 2010	17.63	18.16	17.63	17.91
3465	NASDAQ	ARTNA	Mon, Aug 30, 2010	18.05	18.05	17.57	17.77
3464	NASDAQ	ARTNA	Fri, Aug 27, 2010	17.90	18.16	17.52	18.16
3463	NASDAQ	ARTNA	Thu, Aug 26, 2010	17.70	17.71	17.51	17.71
3462	NASDAQ	ARTNA	Wed, Aug 25, 2010	17.31	17.69	17.26	17.69
3461	NASDAQ	ARTNA	Tue, Aug 24, 2010	17.31	17.69	17.31	17.31
3460	NASDAQ	ARTNA	Mon, Aug 23, 2010	17.71	17.84	17.32	17.33
3459	NASDAQ	ARTNA	Fri, Aug 20, 2010	17.51	17.68	17.51	17.53
3458	NASDAQ	ARTNA	Thu, Aug 19, 2010	17.95	18.13	17.42	17.42
3457	NASDAQ	ARTNA	Wed, Aug 18, 2010	17.95	18.08	17.65	18.08
3456	NASDAQ	ARTNA	Tue, Aug 17, 2010	17.99	18.03	17.44	18.03
3455	NASDAQ	ARTNA	Mon, Aug 16, 2010	17.38	17.84	17.38	17.82
3454	NASDAQ	ARTNA	Fri, Aug 13, 2010	17.68	17.80	17.40	17.40
3453	NASDAQ	ARTNA	Thu, Aug 12, 2010	17.50	17.80	17.36	17.69
3452	NASDAQ	ARTNA	Wed, Aug 11, 2010	17.81	17.97	17.34	17.44
3451	NASDAQ	ARTNA	Tue, Aug 10, 2010	18.15	18.37	18.00	18.00
3450	NASDAQ	ARTNA	Mon, Aug 9, 2010	18.28	18.49	18.06	18.26
3449	NASDAQ	ARTNA	Fri, Aug 6, 2010	18.13	18.27	18.12	18.23
3448	NASDAQ	ARTNA	Thu, Aug 5, 2010	18.23	18.46	18.22	18.22
3447	NASDAQ	ARTNA	Wed, Aug 4, 2010	18.38	18.44	18.22	18.32
3446	NASDAQ	ARTNA	Tue, Aug 3, 2010	18.55	18.67	18.31	18.44
3445	NASDAQ	ARTNA	Mon, Aug 2, 2010	18.52	18.67	18.36	18.67
3444	NASDAQ	ARTNA	Fri, Jul 30, 2010	18.05	18.62	18.05	18.30
3443	NASDAQ	ARTNA	Thu, Jul 29, 2010	18.53	18.63	18.05	18.20
3442	NASDAQ	ARTNA	Wed, Jul 28, 2010	18.48	18.67	18.19	18.46
3441	NASDAQ	ARTNA	Tue, Jul 27, 2010	18.84	18.84	18.27	18.43
3440	NASDAQ	ARTNA	Mon, Jul 26, 2010	18.50	18.81	18.27	18.74
3439	NASDAQ	ARTNA	Fri, Jul 23, 2010	17.99	18.45	17.95	18.45
3438	NASDAQ	ARTNA	Thu, Jul 22, 2010	18.03	18.18	17.75	18.10
3437	NASDAQ	ARTNA	Wed, Jul 21, 2010	17.98	18.22	17.75	17.80
3436	NASDAQ	ARTNA	Tue, Jul 20, 2010	17.81	18.08	17.77	17.99
3435	NASDAQ	ARTNA	Mon, Jul 19, 2010	18.14	18.22	17.80	17.95
3434	NASDAQ	ARTNA	Fri, Jul 16, 2010	18.44	18.70	18.00	18.00
3433	NASDAQ	ARTNA	Thu, Jul 15, 2010	18.52	18.75	18.46	18.55
3432	NASDAQ	ARTNA	Wed, Jul 14, 2010	18.85	18.85	18.52	18.52
3431	NASDAQ	ARTNA	Tue, Jul 13, 2010	18.72	18.89	18.41	18.89
3430	NASDAQ	ARTNA	Mon, Jul 12, 2010	18.66	18.80	18.42	18.44
3429	NASDAQ	ARTNA	Fri, Jul 9, 2010	18.30	18.82	18.04	18.62
3428	NASDAQ	ARTNA	Thu, Jul 8, 2010	18.38	18.39	18.00	18.26
3427	NASDAQ	ARTNA	Wed, Jul 7, 2010	18.34	18.37	18.05	18.37
3426	NASDAQ	ARTNA	Tue, Jul 6, 2010	18.91	18.91	18.17	18.20
3425	NASDAQ	ARTNA	Fri, Jul 2, 2010	18.41	19.00	18.20	18.76
3424	NASDAQ	ARTNA	Thu, Jul 1, 2010	18.23	18.49	18.17	18.24
3423	NASDAQ	ARTNA	Wed, Jun 30, 2010	18.24	18.46	18.04	18.46
3422	NASDAQ	ARTNA	Tue, Jun 29, 2010	18.62	18.89	18.05	18.18
3421	NASDAQ	ARTNA	Mon, Jun 28, 2010	18.75	18.98	18.28	18.97
3420	NASDAQ	ARTNA	Fri, Jun 25, 2010	17.44	19.33	17.14	19.33
3419	NASDAQ	ARTNA	Thu, Jun 24, 2010	17.08	17.49	17.08	17.33
3418	NASDAQ	ARTNA	Wed, Jun 23, 2010	17.39	17.47	17.19	17.45
3417	NASDAQ	ARTNA	Tue, Jun 22, 2010	17.60	17.83	17.40	17.40
3416	NASDAQ	ARTNA	Mon, Jun 21, 2010	17.55	17.64	17.25	17.50
3415	NASDAQ	ARTNA	Fri, Jun 18, 2010	17.45	17.46	17.17	17.32
3414	NASDAQ	ARTNA	Thu, Jun 17, 2010	17.57	17.62	17.11	17.33
3413	NASDAQ	ARTNA	Wed, Jun 16, 2010	17.81	17.81	17.40	17.40
3412	NASDAQ	ARTNA	Tue, Jun 15, 2010	17.76	18.00	17.02	17.95
3411	NASDAQ	ARTNA	Mon, Jun 14, 2010	17.69	18.08	17.37	17.63
3410	NASDAQ	ARTNA	Fri, Jun 11, 2010	16.64	17.52	16.44	17.52
3409	NASDAQ	ARTNA	Thu, Jun 10, 2010	16.76	17.13	16.43	16.89
3408	NASDAQ	ARTNA	Wed, Jun 9, 2010	17.12	17.24	16.49	16.61
3407	NASDAQ	ARTNA	Tue, Jun 8, 2010	17.08	17.12	16.80	16.95
3406	NASDAQ	ARTNA	Mon, Jun 7, 2010	17.24	17.33	16.88	17.01
3405	NASDAQ	ARTNA	Fri, Jun 4, 2010	17.60	17.87	17.00	17.00
3404	NASDAQ	ARTNA	Thu, Jun 3, 2010	17.80	18.22	17.65	17.67
3403	NASDAQ	ARTNA	Wed, Jun 2, 2010	17.28	17.92	17.28	17.92
3402	NASDAQ	ARTNA	Tue, Jun 1, 2010	17.88	18.44	17.21	17.21
3401	NASDAQ	ARTNA	Fri, May 28, 2010	17.55	18.28	17.55	17.91
3400	NASDAQ	ARTNA	Thu, May 27, 2010	18.06	18.47	17.99	18.47
3399	NASDAQ	ARTNA	Wed, May 26, 2010	17.55	17.83	17.37	17.37
3398	NASDAQ	ARTNA	Tue, May 25, 2010	17.40	17.58	17.28	17.38
3397	NASDAQ	ARTNA	Mon, May 24, 2010	18.09	18.47	17.75	17.75
3396	NASDAQ	ARTNA	Fri, May 21, 2010	17.96	18.39	17.93	18.05
3395	NASDAQ	ARTNA	Thu, May 20, 2010	18.10	18.37	17.91	17.92
3394	NASDAQ	ARTNA	Wed, May 19, 2010	18.45	18.50	18.18	18.26
3393	NASDAQ	ARTNA	Tue, May 18, 2010	18.56	18.78	18.44	18.61
3392	NASDAQ	ARTNA	Mon, May 17, 2010	18.42	18.78	18.18	18.39
3391	NASDAQ	ARTNA	Fri, May 14, 2010	18.12	18.55	18.12	18.23
3390	NASDAQ	ARTNA	Thu, May 13, 2010	18.40	18.79	17.94	18.72
3389	NASDAQ	ARTNA	Wed, May 12, 2010	18.92	19.12	17.95	18.33
3388	NASDAQ	ARTNA	Tue, May 11, 2010	18.54	19.02	18.39	18.88
3387	NASDAQ	ARTNA	Mon, May 10, 2010	18.18	18.74	18.09	18.73
3386	NASDAQ	ARTNA	Fri, May 7, 2010	18.53	18.74	17.41	17.80
3385	NASDAQ	ARTNA	Thu, May 6, 2010	18.35	18.86	17.48	18.48
3384	NASDAQ	ARTNA	Wed, May 5, 2010	18.83	18.83	18.32	18.32
3383	NASDAQ	ARTNA	Tue, May 4, 2010	19.03	19.24	18.80	18.99
3382	NASDAQ	ARTNA	Mon, May 3, 2010	19.03	19.22	18.91	19.19
3381	NASDAQ	ARTNA	Fri, Apr 30, 2010	18.95	19.33	18.85	18.94
3380	NASDAQ	ARTNA	Thu, Apr 29, 2010	18.77	18.96	18.58	18.91
3379	NASDAQ	ARTNA	Wed, Apr 28, 2010	18.41	18.73	18.25	18.51
3378	NASDAQ	ARTNA	Tue, Apr 27, 2010	18.75	19.14	18.12	18.13
3377	NASDAQ	ARTNA	Mon, Apr 26, 2010	18.52	19.08	18.52	18.70
3376	NASDAQ	ARTNA	Fri, Apr 23, 2010	18.18	18.51	18.08	18.39
3375	NASDAQ	ARTNA	Thu, Apr 22, 2010	18.00	18.20	17.97	18.14
3374	NASDAQ	ARTNA	Wed, Apr 21, 2010	18.07	18.14	17.89	18.14
3373	NASDAQ	ARTNA	Tue, Apr 20, 2010	18.04	18.10	18.01	18.01
3372	NASDAQ	ARTNA	Mon, Apr 19, 2010	17.91	18.07	17.91	17.94
3371	NASDAQ	ARTNA	Fri, Apr 16, 2010	18.25	18.25	17.90	17.90
3370	NASDAQ	ARTNA	Thu, Apr 15, 2010	18.19	18.44	18.14	18.39
3369	NASDAQ	ARTNA	Wed, Apr 14, 2010	17.70	18.20	17.69	18.20
3368	NASDAQ	ARTNA	Tue, Apr 13, 2010	17.56	17.71	17.54	17.67
3367	NASDAQ	ARTNA	Mon, Apr 12, 2010	17.50	17.93	17.50	17.63
3366	NASDAQ	ARTNA	Fri, Apr 9, 2010	18.10	18.20	17.41	17.42
3365	NASDAQ	ARTNA	Thu, Apr 8, 2010	18.04	18.09	17.92	18.07
3364	NASDAQ	ARTNA	Wed, Apr 7, 2010	18.02	18.25	17.83	18.13
3363	NASDAQ	ARTNA	Tue, Apr 6, 2010	17.99	18.25	17.96	18.11
3362	NASDAQ	ARTNA	Mon, Apr 5, 2010	17.87	18.09	17.75	18.09
3361	NASDAQ	ARTNA	Thu, Apr 1, 2010	17.76	17.95	17.76	17.89
3360	NASDAQ	ARTNA	Wed, Mar 31, 2010	18.21	18.49	17.64	17.66
3359	NASDAQ	ARTNA	Tue, Mar 30, 2010	18.08	18.25	18.00	18.24
3358	NASDAQ	ARTNA	Mon, Mar 29, 2010	18.03	18.24	18.00	18.14
3357	NASDAQ	ARTNA	Fri, Mar 26, 2010	17.85	18.02	17.64	18.02
3356	NASDAQ	ARTNA	Thu, Mar 25, 2010	17.74	17.88	17.60	17.80
3355	NASDAQ	ARTNA	Wed, Mar 24, 2010	17.84	17.90	17.65	17.89
3354	NASDAQ	ARTNA	Tue, Mar 23, 2010	17.90	17.90	17.66	17.80
3353	NASDAQ	ARTNA	Mon, Mar 22, 2010	17.91	18.15	17.87	17.94
3352	NASDAQ	ARTNA	Fri, Mar 19, 2010	18.00	18.08	17.77	17.98
3351	NASDAQ	ARTNA	Thu, Mar 18, 2010	18.06	18.15	17.84	17.84
3350	NASDAQ	ARTNA	Wed, Mar 17, 2010	18.13	18.37	18.13	18.16
3349	NASDAQ	ARTNA	Tue, Mar 16, 2010	18.25	18.27	18.00	18.18
3348	NASDAQ	ARTNA	Mon, Mar 15, 2010	18.11	18.40	18.01	18.25
3347	NASDAQ	ARTNA	Fri, Mar 12, 2010	18.50	18.50	18.03	18.08
3346	NASDAQ	ARTNA	Thu, Mar 11, 2010	17.96	18.50	17.96	18.50
3345	NASDAQ	ARTNA	Wed, Mar 10, 2010	18.07	18.27	17.96	18.10
3344	NASDAQ	ARTNA	Tue, Mar 9, 2010	17.99	18.11	17.75	18.04
3343	NASDAQ	ARTNA	Mon, Mar 8, 2010	18.24	18.24	17.95	18.15
3342	NASDAQ	ARTNA	Fri, Mar 5, 2010	17.97	18.15	17.95	18.15
3341	NASDAQ	ARTNA	Thu, Mar 4, 2010	17.91	17.99	17.80	17.99
3340	NASDAQ	ARTNA	Wed, Mar 3, 2010	17.50	17.99	17.50	17.91
3339	NASDAQ	ARTNA	Tue, Mar 2, 2010	17.85	18.05	17.79	18.01
3338	NASDAQ	ARTNA	Mon, Mar 1, 2010	17.85	17.94	17.69	17.90
3337	NASDAQ	ARTNA	Fri, Feb 26, 2010	18.15	18.15	17.74	17.74
3336	NASDAQ	ARTNA	Thu, Feb 25, 2010	17.74	17.98	17.74	17.94
3335	NASDAQ	ARTNA	Wed, Feb 24, 2010	18.14	18.15	17.69	17.90
3334	NASDAQ	ARTNA	Tue, Feb 23, 2010	18.25	18.34	18.00	18.00
3333	NASDAQ	ARTNA	Mon, Feb 22, 2010	18.01	18.17	17.96	18.16
3332	NASDAQ	ARTNA	Fri, Feb 19, 2010	18.20	18.32	17.99	18.05
3331	NASDAQ	ARTNA	Thu, Feb 18, 2010	18.17	18.17	17.95	18.14
3330	NASDAQ	ARTNA	Wed, Feb 17, 2010	17.97	18.25	17.95	18.15
3329	NASDAQ	ARTNA	Tue, Feb 16, 2010	17.50	17.89	17.41	17.89
3328	NASDAQ	ARTNA	Fri, Feb 12, 2010	17.48	17.48	17.20	17.42
3327	NASDAQ	ARTNA	Thu, Feb 11, 2010	17.39	17.70	17.39	17.57
3326	NASDAQ	ARTNA	Wed, Feb 10, 2010	17.59	17.63	17.39	17.46
3325	NASDAQ	ARTNA	Tue, Feb 9, 2010	17.60	17.66	17.40	17.49
3324	NASDAQ	ARTNA	Mon, Feb 8, 2010	17.46	17.72	17.36	17.46
3323	NASDAQ	ARTNA	Fri, Feb 5, 2010	17.20	17.53	17.20	17.51
3322	NASDAQ	ARTNA	Thu, Feb 4, 2010	16.99	17.42	16.92	17.15
3321	NASDAQ	ARTNA	Wed, Feb 3, 2010	17.31	17.54	16.93	17.05
3320	NASDAQ	ARTNA	Tue, Feb 2, 2010	17.51	17.79	17.42	17.42
3319	NASDAQ	ARTNA	Mon, Feb 1, 2010	17.77	17.85	17.55	17.61
3318	NASDAQ	ARTNA	Fri, Jan 29, 2010	17.72	17.86	17.65	17.65
3317	NASDAQ	ARTNA	Thu, Jan 28, 2010	17.86	17.91	17.60	17.62
3316	NASDAQ	ARTNA	Wed, Jan 27, 2010	17.75	17.94	17.59	17.84
3315	NASDAQ	ARTNA	Tue, Jan 26, 2010	17.85	18.00	17.72	17.88
3314	NASDAQ	ARTNA	Mon, Jan 25, 2010	18.00	18.07	17.58	17.65
3313	NASDAQ	ARTNA	Fri, Jan 22, 2010	17.75	18.11	17.75	17.84
3312	NASDAQ	ARTNA	Thu, Jan 21, 2010	17.94	18.32	17.68	17.68
3311	NASDAQ	ARTNA	Wed, Jan 20, 2010	18.05	18.57	17.82	17.90
3310	NASDAQ	ARTNA	Tue, Jan 19, 2010	17.92	18.26	17.78	18.19
3309	NASDAQ	ARTNA	Fri, Jan 15, 2010	18.10	18.27	17.82	17.85
3308	NASDAQ	ARTNA	Thu, Jan 14, 2010	18.01	18.56	17.73	18.01
3307	NASDAQ	ARTNA	Wed, Jan 13, 2010	18.33	18.43	18.05	18.13
3306	NASDAQ	ARTNA	Tue, Jan 12, 2010	18.56	18.61	18.06	18.21
3305	NASDAQ	ARTNA	Mon, Jan 11, 2010	18.69	18.73	18.50	18.56
3304	NASDAQ	ARTNA	Fri, Jan 8, 2010	17.85	18.85	17.62	18.62
3303	NASDAQ	ARTNA	Thu, Jan 7, 2010	17.65	17.83	17.63	17.83
3302	NASDAQ	ARTNA	Wed, Jan 6, 2010	18.16	18.26	17.58	17.68
3301	NASDAQ	ARTNA	Tue, Jan 5, 2010	18.47	18.47	18.17	18.17
3300	NASDAQ	ARTNA	Mon, Jan 4, 2010	18.73	18.73	18.05	18.53
3299	NASDAQ	ARTNA	Thu, Dec 31, 2009	18.50	18.73	18.03	18.31
3298	NASDAQ	ARTNA	Wed, Dec 30, 2009	18.06	18.61	17.81	18.61
3297	NASDAQ	ARTNA	Tue, Dec 29, 2009	17.84	18.10	17.68	18.07
3296	NASDAQ	ARTNA	Mon, Dec 28, 2009	17.67	17.83	17.39	17.83
3295	NASDAQ	ARTNA	Thu, Dec 24, 2009	17.63	17.82	17.54	17.54
3294	NASDAQ	ARTNA	Wed, Dec 23, 2009	17.57	17.75	17.42	17.63
3293	NASDAQ	ARTNA	Tue, Dec 22, 2009	17.94	17.94	17.61	17.71
3292	NASDAQ	ARTNA	Mon, Dec 21, 2009	17.36	17.99	17.31	17.99
3291	NASDAQ	ARTNA	Fri, Dec 18, 2009	17.18	17.40	16.91	17.39
3290	NASDAQ	ARTNA	Thu, Dec 17, 2009	17.20	17.20	16.97	17.05
3289	NASDAQ	ARTNA	Wed, Dec 16, 2009	17.16	17.20	16.94	17.16
3288	NASDAQ	ARTNA	Tue, Dec 15, 2009	17.69	17.75	16.91	16.91
3287	NASDAQ	ARTNA	Mon, Dec 14, 2009	17.66	17.81	17.51	17.80
3286	NASDAQ	ARTNA	Fri, Dec 11, 2009	17.44	17.73	17.40	17.50
3285	NASDAQ	ARTNA	Thu, Dec 10, 2009	17.37	17.84	17.27	17.49
3284	NASDAQ	ARTNA	Wed, Dec 9, 2009	17.87	17.87	17.17	17.36
3283	NASDAQ	ARTNA	Tue, Dec 8, 2009	17.64	17.93	17.50	17.84
3282	NASDAQ	ARTNA	Mon, Dec 7, 2009	17.27	17.76	17.17	17.76
3281	NASDAQ	ARTNA	Fri, Dec 4, 2009	17.20	17.29	17.01	17.29
3280	NASDAQ	ARTNA	Thu, Dec 3, 2009	17.11	17.16	16.64	17.07
3279	NASDAQ	ARTNA	Wed, Dec 2, 2009	16.72	17.10	16.72	17.00
3278	NASDAQ	ARTNA	Tue, Dec 1, 2009	16.73	16.99	16.53	16.76
3277	NASDAQ	ARTNA	Mon, Nov 30, 2009	16.59	16.75	16.42	16.75
3276	NASDAQ	ARTNA	Fri, Nov 27, 2009	16.73	16.85	16.47	16.49
3275	NASDAQ	ARTNA	Wed, Nov 25, 2009	16.94	17.10	16.86	17.02
3274	NASDAQ	ARTNA	Tue, Nov 24, 2009	16.71	16.88	16.50	16.88
3273	NASDAQ	ARTNA	Mon, Nov 23, 2009	16.77	17.06	16.55	16.76
3272	NASDAQ	ARTNA	Fri, Nov 20, 2009	16.43	16.69	16.42	16.60
3271	NASDAQ	ARTNA	Thu, Nov 19, 2009	16.57	16.60	16.32	16.40
3270	NASDAQ	ARTNA	Wed, Nov 18, 2009	17.00	17.06	16.64	16.67
3269	NASDAQ	ARTNA	Tue, Nov 17, 2009	17.16	17.38	16.70	17.00
3268	NASDAQ	ARTNA	Mon, Nov 16, 2009	16.15	17.18	16.15	17.12
3267	NASDAQ	ARTNA	Fri, Nov 13, 2009	16.32	16.69	15.54	16.14
3266	NASDAQ	ARTNA	Thu, Nov 12, 2009	16.64	17.03	16.25	16.25
3265	NASDAQ	ARTNA	Wed, Nov 11, 2009	17.25	17.40	16.64	16.65
3264	NASDAQ	ARTNA	Tue, Nov 10, 2009	17.07	17.49	17.01	17.43
3263	NASDAQ	ARTNA	Mon, Nov 9, 2009	16.40	17.29	16.32	17.20
3262	NASDAQ	ARTNA	Fri, Nov 6, 2009	16.27	16.42	15.91	16.40
3261	NASDAQ	ARTNA	Thu, Nov 5, 2009	15.65	16.27	15.65	16.14
3260	NASDAQ	ARTNA	Wed, Nov 4, 2009	15.91	16.12	15.65	15.65
3259	NASDAQ	ARTNA	Tue, Nov 3, 2009	15.94	16.16	15.75	15.91
3258	NASDAQ	ARTNA	Mon, Nov 2, 2009	16.30	16.34	15.74	15.94
3257	NASDAQ	ARTNA	Fri, Oct 30, 2009	16.03	16.35	15.89	16.21
3256	NASDAQ	ARTNA	Thu, Oct 29, 2009	16.15	16.42	16.01	16.07
3255	NASDAQ	ARTNA	Wed, Oct 28, 2009	16.67	16.67	16.01	16.01
3254	NASDAQ	ARTNA	Tue, Oct 27, 2009	16.52	16.71	16.18	16.18
3253	NASDAQ	ARTNA	Mon, Oct 26, 2009	16.79	16.96	16.41	16.54
3252	NASDAQ	ARTNA	Fri, Oct 23, 2009	16.84	16.94	16.58	16.58
3251	NASDAQ	ARTNA	Thu, Oct 22, 2009	16.79	16.79	16.57	16.67
3250	NASDAQ	ARTNA	Wed, Oct 21, 2009	16.59	16.82	16.59	16.59
3249	NASDAQ	ARTNA	Tue, Oct 20, 2009	16.80	16.87	16.67	16.81
3248	NASDAQ	ARTNA	Mon, Oct 19, 2009	16.67	16.92	16.67	16.91
3247	NASDAQ	ARTNA	Fri, Oct 16, 2009	16.52	16.92	16.50	16.59
3246	NASDAQ	ARTNA	Thu, Oct 15, 2009	16.70	17.05	16.51	16.58
3245	NASDAQ	ARTNA	Wed, Oct 14, 2009	16.91	17.05	16.65	16.77
3244	NASDAQ	ARTNA	Tue, Oct 13, 2009	16.94	17.15	16.68	16.69
3243	NASDAQ	ARTNA	Mon, Oct 12, 2009	17.45	17.45	16.91	16.91
3242	NASDAQ	ARTNA	Fri, Oct 9, 2009	16.88	17.14	16.88	17.11
3241	NASDAQ	ARTNA	Thu, Oct 8, 2009	16.99	17.18	16.98	16.99
3240	NASDAQ	ARTNA	Wed, Oct 7, 2009	16.97	17.31	16.82	17.04
3239	NASDAQ	ARTNA	Tue, Oct 6, 2009	17.18	17.27	16.67	17.27
3238	NASDAQ	ARTNA	Mon, Oct 5, 2009	16.80	17.10	16.61	17.06
3237	NASDAQ	ARTNA	Fri, Oct 2, 2009	16.61	17.24	16.61	17.05
3236	NASDAQ	ARTNA	Thu, Oct 1, 2009	16.66	17.37	16.64	16.68
3235	NASDAQ	ARTNA	Wed, Sep 30, 2009	17.02	17.11	16.55	16.82
3234	NASDAQ	ARTNA	Tue, Sep 29, 2009	16.99	17.10	16.90	16.99
3233	NASDAQ	ARTNA	Mon, Sep 28, 2009	17.11	17.15	16.76	16.90
3232	NASDAQ	ARTNA	Fri, Sep 25, 2009	16.92	17.45	16.76	17.39
3231	NASDAQ	ARTNA	Thu, Sep 24, 2009	17.12	17.80	16.71	16.88
3230	NASDAQ	ARTNA	Wed, Sep 23, 2009	17.18	17.29	16.74	17.18
3229	NASDAQ	ARTNA	Tue, Sep 22, 2009	17.10	17.30	17.05	17.15
3228	NASDAQ	ARTNA	Mon, Sep 21, 2009	17.20	17.24	17.05	17.05
3227	NASDAQ	ARTNA	Fri, Sep 18, 2009	17.32	17.45	17.11	17.11
3226	NASDAQ	ARTNA	Thu, Sep 17, 2009	17.91	17.91	17.27	17.50
3225	NASDAQ	ARTNA	Wed, Sep 16, 2009	17.51	17.83	17.51	17.83
3224	NASDAQ	ARTNA	Tue, Sep 15, 2009	17.61	17.85	17.61	17.72
3223	NASDAQ	ARTNA	Mon, Sep 14, 2009	17.50	17.87	17.50	17.64
3222	NASDAQ	ARTNA	Fri, Sep 11, 2009	17.69	17.74	17.51	17.53
3221	NASDAQ	ARTNA	Thu, Sep 10, 2009	17.69	17.84	17.50	17.75
3220	NASDAQ	ARTNA	Wed, Sep 9, 2009	17.61	17.93	17.50	17.78
3219	NASDAQ	ARTNA	Tue, Sep 8, 2009	17.35	17.86	17.28	17.70
3218	NASDAQ	ARTNA	Fri, Sep 4, 2009	17.34	17.49	17.12	17.33
3217	NASDAQ	ARTNA	Thu, Sep 3, 2009	17.61	17.63	16.89	17.41
3216	NASDAQ	ARTNA	Wed, Sep 2, 2009	17.20	17.95	16.97	17.66
3215	NASDAQ	ARTNA	Tue, Sep 1, 2009	17.40	17.78	17.00	17.24
3214	NASDAQ	ARTNA	Mon, Aug 31, 2009	17.43	17.96	17.01	17.68
3213	NASDAQ	ARTNA	Fri, Aug 28, 2009	17.35	18.00	17.06	17.51
3212	NASDAQ	ARTNA	Thu, Aug 27, 2009	17.05	17.47	16.81	17.30
3211	NASDAQ	ARTNA	Wed, Aug 26, 2009	17.27	17.45	16.77	17.20
3210	NASDAQ	ARTNA	Tue, Aug 25, 2009	17.14	17.45	16.71	17.38
3209	NASDAQ	ARTNA	Mon, Aug 24, 2009	17.39	17.50	16.85	16.91
3208	NASDAQ	ARTNA	Fri, Aug 21, 2009	17.00	17.35	16.81	17.35
3207	NASDAQ	ARTNA	Thu, Aug 20, 2009	16.71	16.90	16.63	16.66
3206	NASDAQ	ARTNA	Wed, Aug 19, 2009	16.46	16.97	16.46	16.68
3205	NASDAQ	ARTNA	Tue, Aug 18, 2009	16.18	16.84	16.11	16.47
3204	NASDAQ	ARTNA	Mon, Aug 17, 2009	16.07	16.24	15.99	16.06
3203	NASDAQ	ARTNA	Fri, Aug 14, 2009	16.41	16.75	16.11	16.17
3202	NASDAQ	ARTNA	Thu, Aug 13, 2009	16.66	16.95	16.33	16.55
3201	NASDAQ	ARTNA	Wed, Aug 12, 2009	16.31	16.84	16.31	16.67
3200	NASDAQ	ARTNA	Tue, Aug 11, 2009	16.65	16.88	16.23	16.35
3199	NASDAQ	ARTNA	Mon, Aug 10, 2009	16.56	16.96	16.32	16.96
3198	NASDAQ	ARTNA	Fri, Aug 7, 2009	16.76	16.94	16.60	16.79
3197	NASDAQ	ARTNA	Thu, Aug 6, 2009	16.75	16.94	16.46	16.46
3196	NASDAQ	ARTNA	Wed, Aug 5, 2009	17.19	17.19	16.52	16.52
3195	NASDAQ	ARTNA	Tue, Aug 4, 2009	17.30	17.30	17.01	17.24
3194	NASDAQ	ARTNA	Mon, Aug 3, 2009	17.44	17.67	17.14	17.43
3193	NASDAQ	ARTNA	Fri, Jul 31, 2009	17.19	17.73	17.19	17.69
3192	NASDAQ	ARTNA	Thu, Jul 30, 2009	17.35	17.82	17.09	17.24
3191	NASDAQ	ARTNA	Wed, Jul 29, 2009	17.31	17.65	17.25	17.35
3190	NASDAQ	ARTNA	Tue, Jul 28, 2009	17.65	17.98	17.26	17.75
3189	NASDAQ	ARTNA	Mon, Jul 27, 2009	17.26	17.53	17.00	17.53
3188	NASDAQ	ARTNA	Fri, Jul 24, 2009	17.65	17.65	17.03	17.42
3187	NASDAQ	ARTNA	Thu, Jul 23, 2009	16.80	17.75	16.80	17.66
3186	NASDAQ	ARTNA	Wed, Jul 22, 2009	17.11	17.25	16.75	16.98
3185	NASDAQ	ARTNA	Tue, Jul 21, 2009	16.75	17.17	16.68	16.99
3184	NASDAQ	ARTNA	Mon, Jul 20, 2009	17.09	17.09	16.25	16.86
3183	NASDAQ	ARTNA	Fri, Jul 17, 2009	17.29	17.29	16.90	17.00
3182	NASDAQ	ARTNA	Thu, Jul 16, 2009	17.42	17.50	16.92	17.24
3181	NASDAQ	ARTNA	Wed, Jul 15, 2009	17.14	17.62	16.71	17.62
3180	NASDAQ	ARTNA	Tue, Jul 14, 2009	17.00	17.28	16.41	17.10
3179	NASDAQ	ARTNA	Mon, Jul 13, 2009	16.47	17.34	16.10	17.26
3178	NASDAQ	ARTNA	Fri, Jul 10, 2009	15.87	16.32	15.87	16.22
3177	NASDAQ	ARTNA	Thu, Jul 9, 2009	16.36	16.91	16.03	16.20
3176	NASDAQ	ARTNA	Wed, Jul 8, 2009	16.90	17.30	16.27	16.27
3175	NASDAQ	ARTNA	Tue, Jul 7, 2009	16.46	17.50	16.29	16.92
3174	NASDAQ	ARTNA	Mon, Jul 6, 2009	16.83	18.14	16.40	16.40
3173	NASDAQ	ARTNA	Thu, Jul 2, 2009	16.87	16.87	16.22	16.69
3172	NASDAQ	ARTNA	Wed, Jul 1, 2009	15.56	16.97	15.50	16.92
3171	NASDAQ	ARTNA	Tue, Jun 30, 2009	16.03	16.60	15.49	15.93
3170	NASDAQ	ARTNA	Mon, Jun 29, 2009	16.25	16.50	15.75	15.98
3169	NASDAQ	ARTNA	Fri, Jun 26, 2009	15.57	16.85	15.38	16.44
3168	NASDAQ	ARTNA	Thu, Jun 25, 2009	15.08	15.75	14.72	15.47
3167	NASDAQ	ARTNA	Wed, Jun 24, 2009	14.98	14.99	14.69	14.85
3166	NASDAQ	ARTNA	Tue, Jun 23, 2009	14.69	15.13	14.67	14.85
3165	NASDAQ	ARTNA	Mon, Jun 22, 2009	15.25	15.25	14.67	14.83
3164	NASDAQ	ARTNA	Fri, Jun 19, 2009	14.91	15.30	14.69	15.29
3163	NASDAQ	ARTNA	Thu, Jun 18, 2009	15.43	15.43	14.61	14.61
3162	NASDAQ	ARTNA	Wed, Jun 17, 2009	14.56	15.75	14.40	15.43
3161	NASDAQ	ARTNA	Tue, Jun 16, 2009	14.86	15.06	14.33	14.80
3160	NASDAQ	ARTNA	Mon, Jun 15, 2009	15.03	15.03	14.50	14.50
3159	NASDAQ	ARTNA	Fri, Jun 12, 2009	15.08	15.69	14.90	15.09
3158	NASDAQ	ARTNA	Thu, Jun 11, 2009	15.20	15.80	15.11	15.11
3157	NASDAQ	ARTNA	Wed, Jun 10, 2009	15.30	15.68	15.25	15.25
3156	NASDAQ	ARTNA	Tue, Jun 9, 2009	15.40	15.76	15.17	15.25
3155	NASDAQ	ARTNA	Mon, Jun 8, 2009	15.59	15.75	15.32	15.63
3154	NASDAQ	ARTNA	Fri, Jun 5, 2009	15.49	15.75	15.36	15.39
3153	NASDAQ	ARTNA	Thu, Jun 4, 2009	15.75	15.75	15.55	15.61
3152	NASDAQ	ARTNA	Wed, Jun 3, 2009	15.50	15.73	15.37	15.66
3151	NASDAQ	ARTNA	Tue, Jun 2, 2009	15.57	15.72	15.18	15.41
3150	NASDAQ	ARTNA	Mon, Jun 1, 2009	15.43	16.00	15.43	15.61
3149	NASDAQ	ARTNA	Fri, May 29, 2009	15.11	15.88	15.11	15.88
3148	NASDAQ	ARTNA	Thu, May 28, 2009	15.11	15.14	14.91	14.91
3147	NASDAQ	ARTNA	Wed, May 27, 2009	15.15	15.68	15.15	15.20
3146	NASDAQ	ARTNA	Tue, May 26, 2009	15.47	15.69	15.14	15.37
3145	NASDAQ	ARTNA	Fri, May 22, 2009	15.82	15.82	15.01	15.05
3144	NASDAQ	ARTNA	Thu, May 21, 2009	15.49	15.92	15.24	15.63
3143	NASDAQ	ARTNA	Wed, May 20, 2009	15.28	15.69	15.28	15.55
3142	NASDAQ	ARTNA	Tue, May 19, 2009	15.05	15.96	15.05	15.26
3141	NASDAQ	ARTNA	Mon, May 18, 2009	15.63	15.81	15.31	15.71
3140	NASDAQ	ARTNA	Fri, May 15, 2009	15.06	15.82	15.06	15.75
3139	NASDAQ	ARTNA	Thu, May 14, 2009	15.11	15.13	15.01	15.06
3138	NASDAQ	ARTNA	Wed, May 13, 2009	14.95	15.00	14.82	14.95
3137	NASDAQ	ARTNA	Tue, May 12, 2009	14.44	15.00	14.37	14.95
3136	NASDAQ	ARTNA	Mon, May 11, 2009	14.60	14.60	14.34	14.45
3135	NASDAQ	ARTNA	Fri, May 8, 2009	14.44	14.80	14.26	14.48
3134	NASDAQ	ARTNA	Thu, May 7, 2009	14.27	14.38	14.25	14.25
3133	NASDAQ	ARTNA	Wed, May 6, 2009	14.61	14.89	14.25	14.25
3132	NASDAQ	ARTNA	Tue, May 5, 2009	14.62	14.88	14.56	14.80
3131	NASDAQ	ARTNA	Mon, May 4, 2009	14.50	14.88	14.45	14.45
3130	NASDAQ	ARTNA	Fri, May 1, 2009	14.56	14.77	14.02	14.36
3129	NASDAQ	ARTNA	Thu, Apr 30, 2009	14.94	14.94	14.56	14.66
3128	NASDAQ	ARTNA	Wed, Apr 29, 2009	14.68	14.95	14.42	14.75
3127	NASDAQ	ARTNA	Tue, Apr 28, 2009	14.95	14.95	14.68	14.79
3126	NASDAQ	ARTNA	Mon, Apr 27, 2009	14.35	14.94	14.20	14.80
3125	NASDAQ	ARTNA	Fri, Apr 24, 2009	14.40	14.73	14.15	14.15
3124	NASDAQ	ARTNA	Thu, Apr 23, 2009	14.00	14.86	14.00	14.17
3123	NASDAQ	ARTNA	Wed, Apr 22, 2009	14.13	14.47	14.13	14.24
3122	NASDAQ	ARTNA	Tue, Apr 21, 2009	14.19	14.75	14.11	14.14
3121	NASDAQ	ARTNA	Mon, Apr 20, 2009	14.59	14.59	14.30	14.30
3120	NASDAQ	ARTNA	Fri, Apr 17, 2009	14.22	14.48	14.10	14.48
3119	NASDAQ	ARTNA	Thu, Apr 16, 2009	14.23	14.23	14.07	14.21
3118	NASDAQ	ARTNA	Wed, Apr 15, 2009	14.13	14.40	14.04	14.23
3117	NASDAQ	ARTNA	Tue, Apr 14, 2009	14.75	14.75	14.16	14.18
3116	NASDAQ	ARTNA	Mon, Apr 13, 2009	14.47	15.00	14.45	15.00
3115	NASDAQ	ARTNA	Thu, Apr 9, 2009	14.14	14.75	14.14	14.47
3114	NASDAQ	ARTNA	Wed, Apr 8, 2009	14.10	14.45	14.09	14.14
3113	NASDAQ	ARTNA	Tue, Apr 7, 2009	14.53	14.55	14.03	14.28
3112	NASDAQ	ARTNA	Mon, Apr 6, 2009	14.50	14.50	13.97	14.20
3111	NASDAQ	ARTNA	Fri, Apr 3, 2009	14.39	14.55	14.02	14.22
3110	NASDAQ	ARTNA	Thu, Apr 2, 2009	14.00	14.60	14.00	14.11
3109	NASDAQ	ARTNA	Wed, Apr 1, 2009	14.00	14.20	13.81	13.90
3108	NASDAQ	ARTNA	Tue, Mar 31, 2009	13.98	14.49	13.86	14.02
3107	NASDAQ	ARTNA	Mon, Mar 30, 2009	13.80	13.81	13.64	13.64
3106	NASDAQ	ARTNA	Fri, Mar 27, 2009	13.80	14.00	13.80	13.81
3105	NASDAQ	ARTNA	Thu, Mar 26, 2009	13.94	14.00	13.94	14.00
3104	NASDAQ	ARTNA	Wed, Mar 25, 2009	13.94	14.00	13.85	14.00
3103	NASDAQ	ARTNA	Tue, Mar 24, 2009	13.60	13.88	13.60	13.88
3102	NASDAQ	ARTNA	Mon, Mar 23, 2009	13.94	13.97	13.44	13.85
3101	NASDAQ	ARTNA	Fri, Mar 20, 2009	13.37	13.75	13.37	13.56
3100	NASDAQ	ARTNA	Thu, Mar 19, 2009	14.25	14.77	13.51	13.86
3099	NASDAQ	ARTNA	Wed, Mar 18, 2009	13.96	14.30	13.70	14.05
3098	NASDAQ	ARTNA	Tue, Mar 17, 2009	14.45	14.45	13.71	13.71
3097	NASDAQ	ARTNA	Mon, Mar 16, 2009	13.49	14.41	13.36	14.21
3096	NASDAQ	ARTNA	Fri, Mar 13, 2009	13.50	14.01	13.34	13.71
3095	NASDAQ	ARTNA	Thu, Mar 12, 2009	13.00	13.41	12.95	13.41
3094	NASDAQ	ARTNA	Wed, Mar 11, 2009	13.24	13.55	12.81	12.95
3093	NASDAQ	ARTNA	Tue, Mar 10, 2009	12.89	13.62	12.89	13.34
3092	NASDAQ	ARTNA	Mon, Mar 9, 2009	13.33	13.47	12.81	13.10
3091	NASDAQ	ARTNA	Fri, Mar 6, 2009	13.15	13.50	13.00	13.38
3090	NASDAQ	ARTNA	Thu, Mar 5, 2009	13.42	13.60	13.01	13.60
3089	NASDAQ	ARTNA	Wed, Mar 4, 2009	13.54	13.72	13.05	13.44
3088	NASDAQ	ARTNA	Tue, Mar 3, 2009	13.66	13.99	13.04	13.04
3087	NASDAQ	ARTNA	Mon, Mar 2, 2009	13.98	13.98	13.50	13.95
3086	NASDAQ	ARTNA	Fri, Feb 27, 2009	14.25	14.25	14.17	14.25
3085	NASDAQ	ARTNA	Thu, Feb 26, 2009	14.60	14.92	14.36	14.36
3084	NASDAQ	ARTNA	Wed, Feb 25, 2009	14.25	14.71	14.25	14.71
3083	NASDAQ	ARTNA	Tue, Feb 24, 2009	14.80	14.87	14.40	14.40
3082	NASDAQ	ARTNA	Mon, Feb 23, 2009	15.33	15.60	14.45	14.86
3081	NASDAQ	ARTNA	Fri, Feb 20, 2009	15.80	15.80	15.01	15.01
3080	NASDAQ	ARTNA	Thu, Feb 19, 2009	15.14	15.22	14.81	14.81
3079	NASDAQ	ARTNA	Wed, Feb 18, 2009	15.12	15.17	15.00	15.00
3078	NASDAQ	ARTNA	Tue, Feb 17, 2009	15.25	15.81	15.01	15.19
3077	NASDAQ	ARTNA	Fri, Feb 13, 2009	15.37	15.50	15.25	15.25
3076	NASDAQ	ARTNA	Thu, Feb 12, 2009	15.59	15.59	15.52	15.56
3075	NASDAQ	ARTNA	Wed, Feb 11, 2009	15.81	16.00	15.51	15.96
3074	NASDAQ	ARTNA	Tue, Feb 10, 2009	15.52	15.66	15.50	15.50
3073	NASDAQ	ARTNA	Mon, Feb 9, 2009	15.45	15.51	15.45	15.50
3072	NASDAQ	ARTNA	Fri, Feb 6, 2009	15.48	15.70	15.45	15.52
3071	NASDAQ	ARTNA	Thu, Feb 5, 2009	15.98	15.98	15.49	15.65
3070	NASDAQ	ARTNA	Wed, Feb 4, 2009	15.27	15.65	15.27	15.45
3069	NASDAQ	ARTNA	Tue, Feb 3, 2009	15.32	15.56	15.32	15.32
3068	NASDAQ	ARTNA	Mon, Feb 2, 2009	15.39	15.50	15.30	15.50
3067	NASDAQ	ARTNA	Fri, Jan 30, 2009	15.77	15.81	15.50	15.65
3066	NASDAQ	ARTNA	Thu, Jan 29, 2009	15.23	16.10	15.23	15.97
3065	NASDAQ	ARTNA	Wed, Jan 28, 2009	15.50	15.64	15.19	15.50
3064	NASDAQ	ARTNA	Tue, Jan 27, 2009	15.04	15.56	15.04	15.38
3063	NASDAQ	ARTNA	Mon, Jan 26, 2009	15.49	15.65	15.24	15.65
3062	NASDAQ	ARTNA	Fri, Jan 23, 2009	14.73	15.97	14.73	15.25
3061	NASDAQ	ARTNA	Thu, Jan 22, 2009	14.90	15.35	14.81	15.31
3060	NASDAQ	ARTNA	Wed, Jan 21, 2009	15.42	15.42	14.68	15.00
3059	NASDAQ	ARTNA	Tue, Jan 20, 2009	15.50	15.71	15.11	15.11
3058	NASDAQ	ARTNA	Fri, Jan 16, 2009	15.64	15.66	14.87	15.64
3057	NASDAQ	ARTNA	Thu, Jan 15, 2009	15.63	15.98	15.63	15.98
3056	NASDAQ	ARTNA	Wed, Jan 14, 2009	15.25	16.00	15.21	15.95
3055	NASDAQ	ARTNA	Tue, Jan 13, 2009	15.78	15.78	15.20	15.56
3054	NASDAQ	ARTNA	Mon, Jan 12, 2009	16.00	16.03	15.12	15.31
3053	NASDAQ	ARTNA	Fri, Jan 9, 2009	15.73	16.00	15.02	15.65
3052	NASDAQ	ARTNA	Thu, Jan 8, 2009	15.50	16.00	15.04	16.00
3051	NASDAQ	ARTNA	Wed, Jan 7, 2009	15.55	15.55	15.22	15.42
3050	NASDAQ	ARTNA	Tue, Jan 6, 2009	15.66	15.66	15.05	15.27
3049	NASDAQ	ARTNA	Mon, Jan 5, 2009	16.45	16.50	15.95	15.95
3048	NASDAQ	ARTNA	Fri, Jan 2, 2009	15.69	16.19	15.69	16.19
3047	NASDAQ	ARTNA	Wed, Dec 31, 2008	14.50	15.89	14.38	15.89
3046	NASDAQ	ARTNA	Tue, Dec 30, 2008	14.20	14.35	14.11	14.35
3045	NASDAQ	ARTNA	Mon, Dec 29, 2008	14.06	14.41	14.00	14.00
3044	NASDAQ	ARTNA	Fri, Dec 26, 2008	13.93	14.49	13.93	14.14
3043	NASDAQ	ARTNA	Wed, Dec 24, 2008	14.23	14.44	14.05	14.32
3042	NASDAQ	ARTNA	Tue, Dec 23, 2008	14.30	14.49	13.93	14.48
3041	NASDAQ	ARTNA	Mon, Dec 22, 2008	14.55	14.60	13.99	14.42
3040	NASDAQ	ARTNA	Fri, Dec 19, 2008	14.50	14.81	14.38	14.55
3039	NASDAQ	ARTNA	Thu, Dec 18, 2008	14.11	14.82	13.95	14.51
3038	NASDAQ	ARTNA	Wed, Dec 17, 2008	14.35	14.50	14.10	14.27
3037	NASDAQ	ARTNA	Tue, Dec 16, 2008	14.22	14.32	13.97	14.32
3036	NASDAQ	ARTNA	Mon, Dec 15, 2008	14.94	14.98	13.82	14.01
3035	NASDAQ	ARTNA	Fri, Dec 12, 2008	14.89	15.19	14.51	15.19
3034	NASDAQ	ARTNA	Thu, Dec 11, 2008	15.10	15.34	14.85	14.87
3033	NASDAQ	ARTNA	Wed, Dec 10, 2008	14.90	15.50	14.90	15.10
3032	NASDAQ	ARTNA	Tue, Dec 9, 2008	15.18	15.84	14.85	15.00
3031	NASDAQ	ARTNA	Mon, Dec 8, 2008	16.00	16.00	15.37	15.61
3030	NASDAQ	ARTNA	Fri, Dec 5, 2008	15.26	16.00	14.80	15.98
3029	NASDAQ	ARTNA	Thu, Dec 4, 2008	15.31	16.00	15.31	16.00
3028	NASDAQ	ARTNA	Wed, Dec 3, 2008	15.03	15.99	15.03	15.99
3027	NASDAQ	ARTNA	Tue, Dec 2, 2008	15.00	15.32	14.89	15.31
3026	NASDAQ	ARTNA	Mon, Dec 1, 2008	16.00	16.00	14.61	14.61
3025	NASDAQ	ARTNA	Fri, Nov 28, 2008	15.60	15.99	15.02	15.99
3024	NASDAQ	ARTNA	Wed, Nov 26, 2008	16.00	16.00	15.55	15.99
3023	NASDAQ	ARTNA	Tue, Nov 25, 2008	15.87	16.00	14.56	15.99
3022	NASDAQ	ARTNA	Mon, Nov 24, 2008	14.47	15.50	14.43	15.50
3021	NASDAQ	ARTNA	Fri, Nov 21, 2008	14.22	15.43	14.22	15.36
3020	NASDAQ	ARTNA	Thu, Nov 20, 2008	15.56	15.73	14.25	14.80
3019	NASDAQ	ARTNA	Wed, Nov 19, 2008	14.69	16.91	14.69	16.00
3018	NASDAQ	ARTNA	Tue, Nov 18, 2008	14.07	15.00	14.05	15.00
3017	NASDAQ	ARTNA	Mon, Nov 17, 2008	14.50	14.88	14.02	14.02
3016	NASDAQ	ARTNA	Fri, Nov 14, 2008	14.50	14.97	14.50	14.80
3015	NASDAQ	ARTNA	Thu, Nov 13, 2008	14.99	15.00	14.50	14.97
3014	NASDAQ	ARTNA	Wed, Nov 12, 2008	14.85	14.85	14.71	14.71
3013	NASDAQ	ARTNA	Tue, Nov 11, 2008	15.82	15.82	14.76	14.85
3012	NASDAQ	ARTNA	Mon, Nov 10, 2008	15.87	15.87	14.75	15.62
3011	NASDAQ	ARTNA	Fri, Nov 7, 2008	16.44	16.44	14.29	15.18
3010	NASDAQ	ARTNA	Thu, Nov 6, 2008	15.18	15.19	14.31	14.37
3009	NASDAQ	ARTNA	Wed, Nov 5, 2008	14.40	14.70	14.40	14.70
3008	NASDAQ	ARTNA	Tue, Nov 4, 2008	14.25	16.15	14.25	14.40
3007	NASDAQ	ARTNA	Mon, Nov 3, 2008	14.19	14.24	14.19	14.24
3006	NASDAQ	ARTNA	Fri, Oct 31, 2008	14.34	14.92	13.80	14.43
3005	NASDAQ	ARTNA	Thu, Oct 30, 2008	13.44	14.74	13.44	14.03
3004	NASDAQ	ARTNA	Wed, Oct 29, 2008	14.01	14.36	14.00	14.03
3003	NASDAQ	ARTNA	Tue, Oct 28, 2008	14.00	14.78	13.97	14.00
3002	NASDAQ	ARTNA	Mon, Oct 27, 2008	14.41	14.89	14.00	14.38
3001	NASDAQ	ARTNA	Fri, Oct 24, 2008	14.20	15.26	13.75	13.95
3000	NASDAQ	ARTNA	Thu, Oct 23, 2008	14.71	14.71	14.25	14.35
2999	NASDAQ	ARTNA	Wed, Oct 22, 2008	14.32	15.39	14.25	15.17
2998	NASDAQ	ARTNA	Tue, Oct 21, 2008	14.89	14.89	14.53	14.75
2997	NASDAQ	ARTNA	Mon, Oct 20, 2008	14.82	15.00	14.39	14.74
2996	NASDAQ	ARTNA	Fri, Oct 17, 2008	14.19	14.33	14.06	14.07
2995	NASDAQ	ARTNA	Thu, Oct 16, 2008	13.98	14.10	13.96	14.10
2994	NASDAQ	ARTNA	Wed, Oct 15, 2008	14.10	14.66	13.64	13.99
2993	NASDAQ	ARTNA	Tue, Oct 14, 2008	15.25	15.25	14.11	14.12
2992	NASDAQ	ARTNA	Mon, Oct 13, 2008	14.61	14.65	14.50	14.50
2991	NASDAQ	ARTNA	Fri, Oct 10, 2008	13.05	14.31	13.00	14.00
2990	NASDAQ	ARTNA	Thu, Oct 9, 2008	13.99	14.41	13.81	14.00
2989	NASDAQ	ARTNA	Wed, Oct 8, 2008	13.75	15.00	13.51	14.31
2988	NASDAQ	ARTNA	Tue, Oct 7, 2008	15.05	15.48	14.62	14.62
2987	NASDAQ	ARTNA	Mon, Oct 6, 2008	16.56	16.75	14.92	15.25
2986	NASDAQ	ARTNA	Fri, Oct 3, 2008	16.75	16.80	16.62	16.75
2985	NASDAQ	ARTNA	Thu, Oct 2, 2008	16.80	16.84	16.75	16.84
2984	NASDAQ	ARTNA	Wed, Oct 1, 2008	16.68	16.78	16.68	16.75
2983	NASDAQ	ARTNA	Tue, Sep 30, 2008	16.75	16.93	16.75	16.76
2982	NASDAQ	ARTNA	Mon, Sep 29, 2008	16.91	16.95	16.60	16.90
2981	NASDAQ	ARTNA	Fri, Sep 26, 2008	17.00	17.15	16.82	16.82
2980	NASDAQ	ARTNA	Thu, Sep 25, 2008	17.17	17.53	17.04	17.06
2979	NASDAQ	ARTNA	Wed, Sep 24, 2008	16.77	17.32	16.77	17.13
2978	NASDAQ	ARTNA	Tue, Sep 23, 2008	17.08	17.17	17.05	17.15
2977	NASDAQ	ARTNA	Mon, Sep 22, 2008	17.23	17.23	16.71	16.85
2976	NASDAQ	ARTNA	Fri, Sep 19, 2008	17.01	17.08	16.75	16.75
2975	NASDAQ	ARTNA	Thu, Sep 18, 2008	17.00	17.32	16.72	17.24
2974	NASDAQ	ARTNA	Wed, Sep 17, 2008	16.80	16.93	16.66	16.90
2973	NASDAQ	ARTNA	Tue, Sep 16, 2008	17.15	17.39	17.00	17.10
2972	NASDAQ	ARTNA	Mon, Sep 15, 2008	17.29	17.50	17.21	17.30
2971	NASDAQ	ARTNA	Fri, Sep 12, 2008	17.08	17.52	17.01	17.52
2970	NASDAQ	ARTNA	Thu, Sep 11, 2008	17.00	17.07	17.00	17.05
2969	NASDAQ	ARTNA	Wed, Sep 10, 2008	16.65	17.15	16.65	17.04
2968	NASDAQ	ARTNA	Tue, Sep 9, 2008	16.89	16.96	16.85	16.96
2967	NASDAQ	ARTNA	Mon, Sep 8, 2008	17.26	17.26	16.91	16.91
2966	NASDAQ	ARTNA	Fri, Sep 5, 2008	16.60	16.91	16.51	16.88
2965	NASDAQ	ARTNA	Thu, Sep 4, 2008	17.35	17.35	16.55	16.88
2964	NASDAQ	ARTNA	Wed, Sep 3, 2008	17.43	17.47	17.35	17.47
2963	NASDAQ	ARTNA	Tue, Sep 2, 2008	17.49	17.49	17.35	17.35
2962	NASDAQ	ARTNA	Fri, Aug 29, 2008	17.45	17.98	17.45	17.45
2961	NASDAQ	ARTNA	Thu, Aug 28, 2008	18.12	18.20	17.45	17.45
2960	NASDAQ	ARTNA	Wed, Aug 27, 2008	18.01	18.23	17.85	17.85
2959	NASDAQ	ARTNA	Tue, Aug 26, 2008	18.33	18.44	17.94	17.94
2958	NASDAQ	ARTNA	Mon, Aug 25, 2008	18.49	18.50	18.39	18.50
2957	NASDAQ	ARTNA	Fri, Aug 22, 2008	18.50	18.50	18.01	18.30
2956	NASDAQ	ARTNA	Thu, Aug 21, 2008	17.57	18.49	17.57	18.49
2955	NASDAQ	ARTNA	Wed, Aug 20, 2008	17.74	18.00	17.74	17.91
2954	NASDAQ	ARTNA	Tue, Aug 19, 2008	18.24	18.25	17.61	18.00
2953	NASDAQ	ARTNA	Mon, Aug 18, 2008	18.22	18.25	18.07	18.14
2952	NASDAQ	ARTNA	Fri, Aug 15, 2008	17.91	17.95	17.80	17.80
2951	NASDAQ	ARTNA	Thu, Aug 14, 2008	17.59	17.75	17.40	17.75
2950	NASDAQ	ARTNA	Wed, Aug 13, 2008	17.25	17.58	17.23	17.51
2949	NASDAQ	ARTNA	Tue, Aug 12, 2008	17.59	17.59	17.23	17.45
2948	NASDAQ	ARTNA	Mon, Aug 11, 2008	17.26	17.59	17.25	17.59
2947	NASDAQ	ARTNA	Fri, Aug 8, 2008	16.71	17.46	16.70	17.46
2946	NASDAQ	ARTNA	Thu, Aug 7, 2008	16.95	17.10	16.95	17.00
2945	NASDAQ	ARTNA	Wed, Aug 6, 2008	17.49	17.50	17.26	17.27
2944	NASDAQ	ARTNA	Tue, Aug 5, 2008	17.16	17.50	16.85	17.50
2943	NASDAQ	ARTNA	Mon, Aug 4, 2008	17.15	17.15	16.67	17.15
2942	NASDAQ	ARTNA	Fri, Aug 1, 2008	17.00	17.14	16.92	17.00
2941	NASDAQ	ARTNA	Thu, Jul 31, 2008	16.81	16.99	16.75	16.99
2940	NASDAQ	ARTNA	Wed, Jul 30, 2008	16.80	16.93	16.61	16.81
2939	NASDAQ	ARTNA	Tue, Jul 29, 2008	16.99	17.00	16.73	16.95
2938	NASDAQ	ARTNA	Mon, Jul 28, 2008	16.97	17.00	16.60	16.61
2937	NASDAQ	ARTNA	Fri, Jul 25, 2008	17.10	17.10	16.60	16.87
2936	NASDAQ	ARTNA	Thu, Jul 24, 2008	17.16	17.16	16.24	16.87
2935	NASDAQ	ARTNA	Wed, Jul 23, 2008	17.18	17.18	16.95	17.16
2934	NASDAQ	ARTNA	Tue, Jul 22, 2008	16.97	16.98	16.95	16.98
2933	NASDAQ	ARTNA	Mon, Jul 21, 2008	17.40	17.50	16.95	17.14
2932	NASDAQ	ARTNA	Fri, Jul 18, 2008	16.95	17.23	16.95	17.10
2931	NASDAQ	ARTNA	Thu, Jul 17, 2008	17.36	17.36	16.65	17.02
2930	NASDAQ	ARTNA	Wed, Jul 16, 2008	17.39	17.50	17.11	17.11
2929	NASDAQ	ARTNA	Tue, Jul 15, 2008	17.50	17.50	17.20	17.20
2928	NASDAQ	ARTNA	Mon, Jul 14, 2008	17.50	17.69	16.58	17.50
2927	NASDAQ	ARTNA	Fri, Jul 11, 2008	17.52	17.60	17.48	17.50
2926	NASDAQ	ARTNA	Thu, Jul 10, 2008	17.89	17.99	17.52	17.52
2925	NASDAQ	ARTNA	Wed, Jul 9, 2008	17.98	17.98	17.70	17.70
2924	NASDAQ	ARTNA	Tue, Jul 8, 2008	17.76	17.76	17.76	17.76
2923	NASDAQ	ARTNA	Mon, Jul 7, 2008	18.00	18.25	17.77	17.78
2922	NASDAQ	ARTNA	Thu, Jul 3, 2008	18.41	18.41	18.07	18.07
2921	NASDAQ	ARTNA	Wed, Jul 2, 2008	18.21	18.24	18.13	18.13
2920	NASDAQ	ARTNA	Tue, Jul 1, 2008	18.34	18.39	18.00	18.12
2919	NASDAQ	ARTNA	Mon, Jun 30, 2008	18.04	18.39	17.90	18.39
2918	NASDAQ	ARTNA	Fri, Jun 27, 2008	18.01	18.19	18.00	18.00
2917	NASDAQ	ARTNA	Thu, Jun 26, 2008	18.29	18.37	18.02	18.10
2916	NASDAQ	ARTNA	Wed, Jun 25, 2008	18.43	18.43	18.17	18.17
2915	NASDAQ	ARTNA	Tue, Jun 24, 2008	18.20	18.44	18.20	18.28
2914	NASDAQ	ARTNA	Mon, Jun 23, 2008	18.52	18.53	18.22	18.32
2913	NASDAQ	ARTNA	Fri, Jun 20, 2008	18.47	18.77	18.20	18.67
2912	NASDAQ	ARTNA	Thu, Jun 19, 2008	18.50	18.51	18.12	18.46
2911	NASDAQ	ARTNA	Wed, Jun 18, 2008	18.10	18.50	18.10	18.50
2910	NASDAQ	ARTNA	Tue, Jun 17, 2008	18.68	18.77	18.17	18.17
2909	NASDAQ	ARTNA	Mon, Jun 16, 2008	18.45	18.45	18.41	18.42
2908	NASDAQ	ARTNA	Fri, Jun 13, 2008	18.44	18.60	18.36	18.60
2907	NASDAQ	ARTNA	Thu, Jun 12, 2008	18.45	18.64	18.37	18.55
2906	NASDAQ	ARTNA	Wed, Jun 11, 2008	18.92	18.92	18.41	18.41
2905	NASDAQ	ARTNA	Tue, Jun 10, 2008	18.64	18.86	18.46	18.75
2904	NASDAQ	ARTNA	Mon, Jun 9, 2008	18.62	18.87	18.35	18.74
2903	NASDAQ	ARTNA	Fri, Jun 6, 2008	18.67	18.67	18.28	18.50
2902	NASDAQ	ARTNA	Thu, Jun 5, 2008	18.22	18.61	18.22	18.53
2901	NASDAQ	ARTNA	Wed, Jun 4, 2008	18.49	18.49	18.20	18.30
2900	NASDAQ	ARTNA	Tue, Jun 3, 2008	18.15	18.47	18.15	18.39
2899	NASDAQ	ARTNA	Mon, Jun 2, 2008	18.50	18.50	18.10	18.40
2898	NASDAQ	ARTNA	Fri, May 30, 2008	18.49	18.49	18.08	18.49
2897	NASDAQ	ARTNA	Thu, May 29, 2008	18.34	18.35	18.20	18.35
2896	NASDAQ	ARTNA	Wed, May 28, 2008	18.29	18.50	18.20	18.45
2895	NASDAQ	ARTNA	Tue, May 27, 2008	18.80	18.95	18.21	18.61
2894	NASDAQ	ARTNA	Fri, May 23, 2008	18.46	18.79	18.15	18.79
2893	NASDAQ	ARTNA	Thu, May 22, 2008	18.87	18.87	18.06	18.46
2892	NASDAQ	ARTNA	Wed, May 21, 2008	18.59	18.63	18.18	18.63
2891	NASDAQ	ARTNA	Tue, May 20, 2008	18.52	18.60	18.41	18.60
2890	NASDAQ	ARTNA	Mon, May 19, 2008	18.46	18.52	18.44	18.52
2889	NASDAQ	ARTNA	Fri, May 16, 2008	18.55	18.55	18.29	18.29
2888	NASDAQ	ARTNA	Thu, May 15, 2008	18.40	18.55	18.12	18.41
2887	NASDAQ	ARTNA	Wed, May 14, 2008	18.66	18.79	18.05	18.43
2886	NASDAQ	ARTNA	Tue, May 13, 2008	18.36	18.79	18.31	18.79
2885	NASDAQ	ARTNA	Mon, May 12, 2008	18.30	18.74	18.30	18.63
2884	NASDAQ	ARTNA	Fri, May 9, 2008	18.23	18.67	18.15	18.67
2883	NASDAQ	ARTNA	Thu, May 8, 2008	18.08	18.70	18.08	18.60
2882	NASDAQ	ARTNA	Wed, May 7, 2008	18.35	18.58	18.28	18.56
2881	NASDAQ	ARTNA	Tue, May 6, 2008	18.35	18.69	18.20	18.69
2880	NASDAQ	ARTNA	Mon, May 5, 2008	19.00	19.00	18.11	18.61
2879	NASDAQ	ARTNA	Fri, May 2, 2008	18.78	19.00	18.02	19.00
2878	NASDAQ	ARTNA	Thu, May 1, 2008	18.48	18.61	18.48	18.61
2877	NASDAQ	ARTNA	Wed, Apr 30, 2008	18.69	18.74	18.31	18.56
2876	NASDAQ	ARTNA	Tue, Apr 29, 2008	18.65	18.70	18.16	18.61
2875	NASDAQ	ARTNA	Mon, Apr 28, 2008	18.30	18.65	18.30	18.65
2874	NASDAQ	ARTNA	Fri, Apr 25, 2008	18.70	18.70	18.20	18.70
2873	NASDAQ	ARTNA	Thu, Apr 24, 2008	18.38	18.74	18.00	18.00
2872	NASDAQ	ARTNA	Wed, Apr 23, 2008	18.00	18.10	17.98	18.00
2871	NASDAQ	ARTNA	Tue, Apr 22, 2008	18.14	18.25	18.12	18.12
2870	NASDAQ	ARTNA	Mon, Apr 21, 2008	18.07	18.47	18.04	18.47
2869	NASDAQ	ARTNA	Fri, Apr 18, 2008	18.66	18.66	18.03	18.39
2868	NASDAQ	ARTNA	Thu, Apr 17, 2008	18.15	18.39	17.97	18.27
2867	NASDAQ	ARTNA	Wed, Apr 16, 2008	18.25	18.44	18.00	18.05
2866	NASDAQ	ARTNA	Tue, Apr 15, 2008	18.21	18.25	18.00	18.25
2865	NASDAQ	ARTNA	Mon, Apr 14, 2008	18.48	18.49	18.13	18.16
2864	NASDAQ	ARTNA	Fri, Apr 11, 2008	18.44	18.45	18.04	18.44
2863	NASDAQ	ARTNA	Thu, Apr 10, 2008	18.41	18.43	17.75	18.43
2862	NASDAQ	ARTNA	Wed, Apr 9, 2008	18.23	18.42	18.00	18.20
2861	NASDAQ	ARTNA	Tue, Apr 8, 2008	18.47	18.47	18.00	18.13
2860	NASDAQ	ARTNA	Mon, Apr 7, 2008	18.09	18.79	18.07	18.21
2859	NASDAQ	ARTNA	Fri, Apr 4, 2008	18.47	18.47	18.40	18.41
2858	NASDAQ	ARTNA	Thu, Apr 3, 2008	18.33	18.90	18.33	18.45
2857	NASDAQ	ARTNA	Wed, Apr 2, 2008	18.53	18.70	18.50	18.70
2856	NASDAQ	ARTNA	Tue, Apr 1, 2008	18.53	18.53	18.26	18.51
2855	NASDAQ	ARTNA	Mon, Mar 31, 2008	18.00	18.53	18.00	18.51
2854	NASDAQ	ARTNA	Fri, Mar 28, 2008	18.30	18.45	18.10	18.10
2853	NASDAQ	ARTNA	Thu, Mar 27, 2008	18.53	18.53	18.41	18.43
2852	NASDAQ	ARTNA	Wed, Mar 26, 2008	18.43	18.43	18.42	18.43
2851	NASDAQ	ARTNA	Tue, Mar 25, 2008	18.19	18.21	18.11	18.20
2850	NASDAQ	ARTNA	Mon, Mar 24, 2008	18.31	18.44	18.06	18.09
2849	NASDAQ	ARTNA	Thu, Mar 20, 2008	18.31	18.31	17.95	18.05
2848	NASDAQ	ARTNA	Wed, Mar 19, 2008	18.34	18.50	17.81	18.35
2847	NASDAQ	ARTNA	Tue, Mar 18, 2008	18.54	18.54	18.25	18.35
2846	NASDAQ	ARTNA	Mon, Mar 17, 2008	18.26	18.52	18.25	18.38
2845	NASDAQ	ARTNA	Fri, Mar 14, 2008	18.57	18.57	18.26	18.33
2844	NASDAQ	ARTNA	Thu, Mar 13, 2008	18.43	18.43	18.26	18.26
2843	NASDAQ	ARTNA	Wed, Mar 12, 2008	18.35	18.60	18.35	18.56
2842	NASDAQ	ARTNA	Tue, Mar 11, 2008	18.51	18.68	18.35	18.44
2841	NASDAQ	ARTNA	Mon, Mar 10, 2008	18.90	18.90	18.50	18.52
2840	NASDAQ	ARTNA	Fri, Mar 7, 2008	18.90	18.98	18.51	18.96
2839	NASDAQ	ARTNA	Thu, Mar 6, 2008	19.01	19.05	19.01	19.05
2838	NASDAQ	ARTNA	Wed, Mar 5, 2008	18.91	19.09	18.75	19.02
2837	NASDAQ	ARTNA	Tue, Mar 4, 2008	18.61	19.00	18.60	18.91
2836	NASDAQ	ARTNA	Mon, Mar 3, 2008	18.78	19.00	18.78	18.99
2835	NASDAQ	ARTNA	Fri, Feb 29, 2008	18.68	18.99	18.68	18.98
2834	NASDAQ	ARTNA	Thu, Feb 28, 2008	18.97	19.11	18.91	18.91
2833	NASDAQ	ARTNA	Wed, Feb 27, 2008	18.75	19.07	18.69	18.70
2832	NASDAQ	ARTNA	Tue, Feb 26, 2008	18.69	19.15	18.69	19.15
2831	NASDAQ	ARTNA	Mon, Feb 25, 2008	18.81	19.13	18.47	18.56
2830	NASDAQ	ARTNA	Fri, Feb 22, 2008	18.84	19.15	18.60	19.00
2829	NASDAQ	ARTNA	Thu, Feb 21, 2008	18.92	18.93	18.51	18.52
2828	NASDAQ	ARTNA	Wed, Feb 20, 2008	18.66	18.85	18.41	18.85
2827	NASDAQ	ARTNA	Tue, Feb 19, 2008	18.35	18.74	18.35	18.40
2826	NASDAQ	ARTNA	Fri, Feb 15, 2008	18.76	18.77	18.65	18.71
2825	NASDAQ	ARTNA	Thu, Feb 14, 2008	19.00	19.01	18.89	18.89
2824	NASDAQ	ARTNA	Wed, Feb 13, 2008	18.89	19.00	18.89	19.00
2823	NASDAQ	ARTNA	Tue, Feb 12, 2008	18.95	18.95	18.39	18.95
2822	NASDAQ	ARTNA	Mon, Feb 11, 2008	18.75	18.92	18.39	18.80
2821	NASDAQ	ARTNA	Fri, Feb 8, 2008	18.35	18.79	18.35	18.79
2820	NASDAQ	ARTNA	Thu, Feb 7, 2008	18.62	18.87	18.35	18.61
2819	NASDAQ	ARTNA	Wed, Feb 6, 2008	18.60	18.66	18.60	18.66
2818	NASDAQ	ARTNA	Tue, Feb 5, 2008	18.47	18.74	18.47	18.58
2817	NASDAQ	ARTNA	Mon, Feb 4, 2008	18.93	18.93	18.27	18.82
2816	NASDAQ	ARTNA	Fri, Feb 1, 2008	18.92	19.31	18.70	19.24
2815	NASDAQ	ARTNA	Thu, Jan 31, 2008	18.95	18.98	18.33	18.58
2814	NASDAQ	ARTNA	Wed, Jan 30, 2008	18.63	18.63	18.26	18.58
2813	NASDAQ	ARTNA	Tue, Jan 29, 2008	18.49	18.56	18.36	18.46
2812	NASDAQ	ARTNA	Mon, Jan 28, 2008	18.29	18.64	18.29	18.64
2811	NASDAQ	ARTNA	Fri, Jan 25, 2008	18.59	18.59	18.50	18.50
2810	NASDAQ	ARTNA	Thu, Jan 24, 2008	18.62	18.69	18.36	18.50
2809	NASDAQ	ARTNA	Wed, Jan 23, 2008	18.49	18.55	18.30	18.36
2808	NASDAQ	ARTNA	Tue, Jan 22, 2008	18.49	18.66	18.30	18.38
2807	NASDAQ	ARTNA	Fri, Jan 18, 2008	18.81	18.99	18.75	18.98
2806	NASDAQ	ARTNA	Thu, Jan 17, 2008	19.15	19.15	18.89	18.89
2805	NASDAQ	ARTNA	Wed, Jan 16, 2008	18.75	19.00	18.75	18.99
2804	NASDAQ	ARTNA	Tue, Jan 15, 2008	18.87	18.95	18.85	18.94
2803	NASDAQ	ARTNA	Mon, Jan 14, 2008	18.85	18.88	18.85	18.88
2802	NASDAQ	ARTNA	Fri, Jan 11, 2008	18.85	19.19	18.85	18.98
2801	NASDAQ	ARTNA	Thu, Jan 10, 2008	19.06	19.07	18.85	18.99
2800	NASDAQ	ARTNA	Wed, Jan 9, 2008	18.96	18.98	18.85	18.91
2799	NASDAQ	ARTNA	Tue, Jan 8, 2008	19.18	19.24	18.86	19.10
2798	NASDAQ	ARTNA	Mon, Jan 7, 2008	18.85	19.00	18.85	18.95
2797	NASDAQ	ARTNA	Fri, Jan 4, 2008	19.08	19.08	18.93	18.95
2796	NASDAQ	ARTNA	Thu, Jan 3, 2008	19.06	19.06	18.85	18.85
2795	NASDAQ	ARTNA	Wed, Jan 2, 2008	18.96	18.98	18.90	18.97
2794	NASDAQ	ARTNA	Mon, Dec 31, 2007	18.85	19.00	18.85	18.90
2793	NASDAQ	ARTNA	Fri, Dec 28, 2007	19.23	19.23	18.86	18.99
2792	NASDAQ	ARTNA	Thu, Dec 27, 2007	18.97	19.00	18.97	19.00
2791	NASDAQ	ARTNA	Wed, Dec 26, 2007	18.88	19.12	18.88	19.07
2790	NASDAQ	ARTNA	Mon, Dec 24, 2007	18.97	19.17	18.93	19.15
2789	NASDAQ	ARTNA	Fri, Dec 21, 2007	18.91	19.29	18.87	19.29
2788	NASDAQ	ARTNA	Thu, Dec 20, 2007	19.33	19.33	18.95	19.02
2787	NASDAQ	ARTNA	Wed, Dec 19, 2007	19.25	19.33	18.90	19.33
2786	NASDAQ	ARTNA	Tue, Dec 18, 2007	19.25	19.25	18.89	19.10
2785	NASDAQ	ARTNA	Mon, Dec 17, 2007	18.99	19.14	18.90	19.02
2784	NASDAQ	ARTNA	Fri, Dec 14, 2007	19.25	19.25	19.00	19.21
2783	NASDAQ	ARTNA	Thu, Dec 13, 2007	19.33	19.33	19.03	19.20
2782	NASDAQ	ARTNA	Wed, Dec 12, 2007	19.13	19.47	19.05	19.22
2781	NASDAQ	ARTNA	Tue, Dec 11, 2007	19.12	19.25	19.05	19.23
2780	NASDAQ	ARTNA	Mon, Dec 10, 2007	19.15	19.30	19.15	19.29
2779	NASDAQ	ARTNA	Fri, Dec 7, 2007	19.50	19.50	19.01	19.30
2778	NASDAQ	ARTNA	Thu, Dec 6, 2007	19.30	19.49	18.90	19.49
2777	NASDAQ	ARTNA	Wed, Dec 5, 2007	19.40	19.40	18.77	19.05
2776	NASDAQ	ARTNA	Tue, Dec 4, 2007	19.02	19.16	18.91	19.16
2775	NASDAQ	ARTNA	Mon, Dec 3, 2007	19.00	19.37	18.75	19.37
2774	NASDAQ	ARTNA	Fri, Nov 30, 2007	19.45	19.45	18.75	19.00
2773	NASDAQ	ARTNA	Thu, Nov 29, 2007	18.90	19.35	18.90	19.24
2772	NASDAQ	ARTNA	Wed, Nov 28, 2007	19.20	19.20	18.98	19.19
2771	NASDAQ	ARTNA	Tue, Nov 27, 2007	19.02	19.14	18.70	19.11
2770	NASDAQ	ARTNA	Mon, Nov 26, 2007	19.39	19.42	18.92	19.20
2769	NASDAQ	ARTNA	Fri, Nov 23, 2007	19.45	19.45	18.83	19.20
2768	NASDAQ	ARTNA	Wed, Nov 21, 2007	19.28	19.28	18.72	19.05
2767	NASDAQ	ARTNA	Tue, Nov 20, 2007	19.39	19.39	18.76	18.76
2766	NASDAQ	ARTNA	Mon, Nov 19, 2007	19.23	19.39	19.09	19.20
2765	NASDAQ	ARTNA	Fri, Nov 16, 2007	19.04	19.24	19.02	19.24
2764	NASDAQ	ARTNA	Thu, Nov 15, 2007	19.10	19.10	18.61	19.01
2763	NASDAQ	ARTNA	Wed, Nov 14, 2007	19.10	19.10	18.90	19.08
2762	NASDAQ	ARTNA	Tue, Nov 13, 2007	19.05	19.05	18.44	19.00
2761	NASDAQ	ARTNA	Mon, Nov 12, 2007	18.92	19.10	18.65	19.05
2760	NASDAQ	ARTNA	Fri, Nov 9, 2007	19.10	19.10	18.66	18.73
2759	NASDAQ	ARTNA	Thu, Nov 8, 2007	19.03	19.08	18.78	19.03
2758	NASDAQ	ARTNA	Wed, Nov 7, 2007	19.03	19.03	18.50	19.02
2757	NASDAQ	ARTNA	Tue, Nov 6, 2007	19.09	19.09	18.89	19.01
2756	NASDAQ	ARTNA	Mon, Nov 5, 2007	19.25	19.25	18.45	18.93
2755	NASDAQ	ARTNA	Fri, Nov 2, 2007	19.08	19.13	18.50	19.06
2754	NASDAQ	ARTNA	Thu, Nov 1, 2007	19.00	19.00	18.80	18.90
2753	NASDAQ	ARTNA	Wed, Oct 31, 2007	19.24	19.24	18.91	19.00
2752	NASDAQ	ARTNA	Tue, Oct 30, 2007	19.24	19.24	19.11	19.20
2751	NASDAQ	ARTNA	Mon, Oct 29, 2007	19.22	19.22	19.11	19.11
2750	NASDAQ	ARTNA	Fri, Oct 26, 2007	19.33	19.33	18.80	19.00
2749	NASDAQ	ARTNA	Thu, Oct 25, 2007	19.09	19.12	18.80	19.01
2748	NASDAQ	ARTNA	Wed, Oct 24, 2007	19.00	19.04	18.86	19.04
2747	NASDAQ	ARTNA	Tue, Oct 23, 2007	19.23	19.23	18.61	19.00
2746	NASDAQ	ARTNA	Mon, Oct 22, 2007	18.70	19.05	18.70	19.00
2745	NASDAQ	ARTNA	Fri, Oct 19, 2007	19.19	19.19	18.81	18.95
2744	NASDAQ	ARTNA	Thu, Oct 18, 2007	18.95	19.17	18.85	19.06
2743	NASDAQ	ARTNA	Wed, Oct 17, 2007	19.14	19.15	18.71	18.80
2742	NASDAQ	ARTNA	Tue, Oct 16, 2007	19.13	19.28	19.13	19.13
2741	NASDAQ	ARTNA	Mon, Oct 15, 2007	18.97	19.47	18.91	19.44
2740	NASDAQ	ARTNA	Fri, Oct 12, 2007	19.23	19.23	18.97	19.12
2739	NASDAQ	ARTNA	Thu, Oct 11, 2007	18.98	19.50	18.66	19.15
2738	NASDAQ	ARTNA	Wed, Oct 10, 2007	19.02	19.39	19.00	19.13
2737	NASDAQ	ARTNA	Tue, Oct 9, 2007	19.50	19.50	19.21	19.21
2736	NASDAQ	ARTNA	Mon, Oct 8, 2007	19.19	19.47	19.15	19.41
2735	NASDAQ	ARTNA	Fri, Oct 5, 2007	19.47	19.50	19.27	19.34
2734	NASDAQ	ARTNA	Thu, Oct 4, 2007	19.12	19.50	18.98	19.20
2733	NASDAQ	ARTNA	Wed, Oct 3, 2007	18.53	19.10	18.53	19.10
2732	NASDAQ	ARTNA	Tue, Oct 2, 2007	18.61	18.68	18.51	18.68
2731	NASDAQ	ARTNA	Mon, Oct 1, 2007	18.61	18.84	18.57	18.69
2730	NASDAQ	ARTNA	Fri, Sep 28, 2007	18.73	19.00	18.50	19.00
2729	NASDAQ	ARTNA	Thu, Sep 27, 2007	18.90	18.90	18.55	18.61
2728	NASDAQ	ARTNA	Wed, Sep 26, 2007	19.00	19.00	18.57	18.67
2727	NASDAQ	ARTNA	Tue, Sep 25, 2007	18.87	18.87	18.75	18.75
2726	NASDAQ	ARTNA	Mon, Sep 24, 2007	19.00	19.00	18.70	18.87
2725	NASDAQ	ARTNA	Fri, Sep 21, 2007	18.61	19.00	18.56	18.94
2724	NASDAQ	ARTNA	Thu, Sep 20, 2007	19.01	19.15	18.90	18.91
2723	NASDAQ	ARTNA	Wed, Sep 19, 2007	18.70	19.20	18.70	19.20
2722	NASDAQ	ARTNA	Tue, Sep 18, 2007	18.36	19.17	18.34	19.17
2721	NASDAQ	ARTNA	Mon, Sep 17, 2007	18.76	18.90	18.52	18.52
2720	NASDAQ	ARTNA	Fri, Sep 14, 2007	19.06	19.06	18.76	18.79
2719	NASDAQ	ARTNA	Thu, Sep 13, 2007	18.99	19.09	18.99	19.09
2718	NASDAQ	ARTNA	Wed, Sep 12, 2007	18.77	19.09	18.65	19.07
2717	NASDAQ	ARTNA	Tue, Sep 11, 2007	19.10	19.10	18.52	18.99
2716	NASDAQ	ARTNA	Mon, Sep 10, 2007	18.98	19.15	18.86	19.15
2715	NASDAQ	ARTNA	Fri, Sep 7, 2007	18.95	19.10	18.86	19.10
2714	NASDAQ	ARTNA	Thu, Sep 6, 2007	19.01	19.15	19.00	19.15
2713	NASDAQ	ARTNA	Wed, Sep 5, 2007	19.13	19.35	18.91	19.12
2712	NASDAQ	ARTNA	Tue, Sep 4, 2007	19.16	19.24	18.99	19.15
2711	NASDAQ	ARTNA	Fri, Aug 31, 2007	18.63	19.30	18.60	19.30
2710	NASDAQ	ARTNA	Thu, Aug 30, 2007	18.64	19.13	18.59	19.00
2709	NASDAQ	ARTNA	Wed, Aug 29, 2007	18.64	19.24	18.64	19.00
2708	NASDAQ	ARTNA	Tue, Aug 28, 2007	18.62	19.00	18.50	18.91
2707	NASDAQ	ARTNA	Mon, Aug 27, 2007	18.95	19.00	18.46	18.85
2706	NASDAQ	ARTNA	Fri, Aug 24, 2007	19.25	19.25	18.50	18.79
2705	NASDAQ	ARTNA	Thu, Aug 23, 2007	18.78	18.93	18.70	18.93
2704	NASDAQ	ARTNA	Wed, Aug 22, 2007	18.87	19.15	18.87	19.15
2703	NASDAQ	ARTNA	Tue, Aug 21, 2007	18.78	19.00	18.51	18.75
2702	NASDAQ	ARTNA	Mon, Aug 20, 2007	18.38	18.70	18.31	18.60
2701	NASDAQ	ARTNA	Fri, Aug 17, 2007	19.00	19.00	18.34	18.41
2700	NASDAQ	ARTNA	Thu, Aug 16, 2007	18.31	19.05	18.26	18.75
2699	NASDAQ	ARTNA	Wed, Aug 15, 2007	18.97	18.97	18.50	18.50
2698	NASDAQ	ARTNA	Tue, Aug 14, 2007	19.00	19.03	18.69	19.00
2697	NASDAQ	ARTNA	Mon, Aug 13, 2007	18.60	19.36	18.60	18.80
2696	NASDAQ	ARTNA	Fri, Aug 10, 2007	19.15	19.15	18.26	18.75
2695	NASDAQ	ARTNA	Thu, Aug 9, 2007	18.77	19.42	18.36	19.40
2694	NASDAQ	ARTNA	Wed, Aug 8, 2007	19.27	19.30	18.42	19.18
2693	NASDAQ	ARTNA	Tue, Aug 7, 2007	19.00	19.27	19.00	19.27
2692	NASDAQ	ARTNA	Mon, Aug 6, 2007	19.05	19.28	19.03	19.25
2691	NASDAQ	ARTNA	Fri, Aug 3, 2007	19.23	19.23	19.10	19.10
2690	NASDAQ	ARTNA	Thu, Aug 2, 2007	19.26	19.26	19.05	19.14
2689	NASDAQ	ARTNA	Wed, Aug 1, 2007	19.25	19.25	18.92	19.01
2688	NASDAQ	ARTNA	Tue, Jul 31, 2007	19.26	19.26	19.05	19.10
2687	NASDAQ	ARTNA	Mon, Jul 30, 2007	19.05	19.18	19.03	19.15
2686	NASDAQ	ARTNA	Fri, Jul 27, 2007	19.04	19.15	18.84	19.15
2685	NASDAQ	ARTNA	Thu, Jul 26, 2007	19.00	19.08	18.55	19.07
2684	NASDAQ	ARTNA	Wed, Jul 25, 2007	19.00	19.17	19.00	19.17
2683	NASDAQ	ARTNA	Tue, Jul 24, 2007	19.40	19.40	19.00	19.00
2682	NASDAQ	ARTNA	Mon, Jul 23, 2007	19.37	19.37	19.10	19.29
2681	NASDAQ	ARTNA	Fri, Jul 20, 2007	19.50	19.50	19.15	19.21
2680	NASDAQ	ARTNA	Thu, Jul 19, 2007	19.34	19.36	19.11	19.30
2679	NASDAQ	ARTNA	Wed, Jul 18, 2007	19.16	19.50	19.10	19.50
2678	NASDAQ	ARTNA	Tue, Jul 17, 2007	19.14	19.16	19.01	19.16
2677	NASDAQ	ARTNA	Mon, Jul 16, 2007	19.05	19.19	19.00	19.00
2676	NASDAQ	ARTNA	Fri, Jul 13, 2007	19.09	19.13	19.06	19.11
2675	NASDAQ	ARTNA	Thu, Jul 12, 2007	19.34	19.35	19.07	19.19
2674	NASDAQ	ARTNA	Wed, Jul 11, 2007	19.20	19.35	19.01	19.10
2673	NASDAQ	ARTNA	Tue, Jul 10, 2007	19.08	19.30	19.08	19.20
2672	NASDAQ	ARTNA	Mon, Jul 9, 2007	19.16	19.29	19.11	19.29
2671	NASDAQ	ARTNA	Fri, Jul 6, 2007	19.30	19.30	19.18	19.30
2670	NASDAQ	ARTNA	Thu, Jul 5, 2007	19.48	19.48	19.10	19.25
2669	NASDAQ	ARTNA	Tue, Jul 3, 2007	19.13	19.48	19.02	19.30
2668	NASDAQ	ARTNA	Mon, Jul 2, 2007	19.20	19.28	19.00	19.00
2667	NASDAQ	ARTNA	Fri, Jun 29, 2007	19.03	19.21	18.80	19.12
2666	NASDAQ	ARTNA	Thu, Jun 28, 2007	19.05	19.20	19.00	19.01
2665	NASDAQ	ARTNA	Wed, Jun 27, 2007	18.65	19.00	18.65	19.00
2664	NASDAQ	ARTNA	Tue, Jun 26, 2007	18.96	18.96	18.60	18.71
2663	NASDAQ	ARTNA	Mon, Jun 25, 2007	19.09	19.09	18.70	18.75
2662	NASDAQ	ARTNA	Fri, Jun 22, 2007	18.99	18.99	18.70	18.85
2661	NASDAQ	ARTNA	Thu, Jun 21, 2007	19.05	19.05	18.68	18.81
2660	NASDAQ	ARTNA	Wed, Jun 20, 2007	19.12	19.12	18.84	18.90
2659	NASDAQ	ARTNA	Tue, Jun 19, 2007	19.12	19.12	18.84	19.00
2658	NASDAQ	ARTNA	Mon, Jun 18, 2007	18.83	19.12	18.81	19.00
2657	NASDAQ	ARTNA	Fri, Jun 15, 2007	18.90	19.08	18.70	18.98
2656	NASDAQ	ARTNA	Thu, Jun 14, 2007	19.00	19.13	18.75	18.75
2655	NASDAQ	ARTNA	Wed, Jun 13, 2007	19.31	19.31	19.01	19.30
2654	NASDAQ	ARTNA	Tue, Jun 12, 2007	19.37	19.37	19.00	19.11
2653	NASDAQ	ARTNA	Mon, Jun 11, 2007	19.27	19.35	19.21	19.21
2652	NASDAQ	ARTNA	Fri, Jun 8, 2007	19.40	19.48	19.36	19.43
2651	NASDAQ	ARTNA	Thu, Jun 7, 2007	19.63	19.64	19.32	19.39
2650	NASDAQ	ARTNA	Wed, Jun 6, 2007	19.70	20.15	19.33	19.43
2649	NASDAQ	ARTNA	Tue, Jun 5, 2007	19.75	19.75	19.41	19.50
2648	NASDAQ	ARTNA	Mon, Jun 4, 2007	19.67	19.79	19.50	19.55
2647	NASDAQ	ARTNA	Fri, Jun 1, 2007	20.48	20.48	20.00	20.07
2646	NASDAQ	ARTNA	Thu, May 31, 2007	19.60	19.69	19.49	19.49
2645	NASDAQ	ARTNA	Wed, May 30, 2007	19.75	19.84	19.65	19.65
2644	NASDAQ	ARTNA	Tue, May 29, 2007	19.70	20.35	19.51	19.60
2643	NASDAQ	ARTNA	Fri, May 25, 2007	20.37	20.37	19.90	19.98
2642	NASDAQ	ARTNA	Thu, May 24, 2007	20.01	20.39	19.85	19.85
2641	NASDAQ	ARTNA	Wed, May 23, 2007	19.55	20.25	19.40	19.85
2640	NASDAQ	ARTNA	Tue, May 22, 2007	19.73	20.36	19.56	19.70
2639	NASDAQ	ARTNA	Mon, May 21, 2007	19.87	19.87	19.40	19.65
2638	NASDAQ	ARTNA	Fri, May 18, 2007	19.79	19.79	19.65	19.75
2637	NASDAQ	ARTNA	Thu, May 17, 2007	19.38	19.54	19.38	19.52
2636	NASDAQ	ARTNA	Wed, May 16, 2007	19.99	19.99	19.40	19.56
2635	NASDAQ	ARTNA	Tue, May 15, 2007	19.75	19.98	19.36	19.98
2634	NASDAQ	ARTNA	Mon, May 14, 2007	19.84	19.84	19.75	19.82
2633	NASDAQ	ARTNA	Fri, May 11, 2007	20.05	20.05	19.75	19.75
2632	NASDAQ	ARTNA	Thu, May 10, 2007	19.92	19.96	19.75	19.75
2631	NASDAQ	ARTNA	Wed, May 9, 2007	20.10	20.10	19.58	19.91
2630	NASDAQ	ARTNA	Tue, May 8, 2007	19.76	20.02	19.72	19.90
2629	NASDAQ	ARTNA	Mon, May 7, 2007	19.83	20.15	19.83	20.15
2628	NASDAQ	ARTNA	Fri, May 4, 2007	19.98	20.11	19.98	20.10
2627	NASDAQ	ARTNA	Thu, May 3, 2007	19.99	20.00	19.75	19.75
2626	NASDAQ	ARTNA	Wed, May 2, 2007	19.96	20.01	19.85	19.90
2625	NASDAQ	ARTNA	Tue, May 1, 2007	19.88	20.19	19.75	20.05
2624	NASDAQ	ARTNA	Mon, Apr 30, 2007	20.27	20.27	20.06	20.13
2623	NASDAQ	ARTNA	Fri, Apr 27, 2007	20.29	20.29	20.01	20.15
2622	NASDAQ	ARTNA	Thu, Apr 26, 2007	20.13	20.30	20.05	20.05
2621	NASDAQ	ARTNA	Wed, Apr 25, 2007	20.21	20.28	19.91	20.00
2620	NASDAQ	ARTNA	Tue, Apr 24, 2007	19.94	20.13	19.83	19.99
2619	NASDAQ	ARTNA	Mon, Apr 23, 2007	19.89	20.14	19.29	19.95
2618	NASDAQ	ARTNA	Fri, Apr 20, 2007	19.63	20.01	19.51	19.99
2617	NASDAQ	ARTNA	Thu, Apr 19, 2007	19.60	20.22	19.53	19.60
2616	NASDAQ	ARTNA	Wed, Apr 18, 2007	19.81	19.95	19.79	19.83
2615	NASDAQ	ARTNA	Tue, Apr 17, 2007	20.14	20.23	20.00	20.02
2614	NASDAQ	ARTNA	Mon, Apr 16, 2007	20.14	20.14	19.85	20.08
2613	NASDAQ	ARTNA	Fri, Apr 13, 2007	20.01	20.18	19.98	19.98
2612	NASDAQ	ARTNA	Thu, Apr 12, 2007	19.87	20.15	19.87	20.15
2611	NASDAQ	ARTNA	Wed, Apr 11, 2007	20.00	20.05	20.00	20.00
2610	NASDAQ	ARTNA	Tue, Apr 10, 2007	20.13	20.14	19.85	20.05
2609	NASDAQ	ARTNA	Mon, Apr 9, 2007	20.11	20.46	19.72	20.46
2608	NASDAQ	ARTNA	Thu, Apr 5, 2007	20.50	20.57	20.50	20.57
2607	NASDAQ	ARTNA	Wed, Apr 4, 2007	20.46	20.46	20.25	20.35
2606	NASDAQ	ARTNA	Tue, Apr 3, 2007	20.26	20.60	20.20	20.59
2605	NASDAQ	ARTNA	Mon, Apr 2, 2007	19.81	20.34	19.56	19.91
2604	NASDAQ	ARTNA	Fri, Mar 30, 2007	20.14	20.63	20.11	20.52
2603	NASDAQ	ARTNA	Thu, Mar 29, 2007	19.88	20.15	19.54	20.15
2602	NASDAQ	ARTNA	Wed, Mar 28, 2007	20.09	20.53	19.93	20.12
2601	NASDAQ	ARTNA	Tue, Mar 27, 2007	20.17	20.25	19.51	19.92
2600	NASDAQ	ARTNA	Mon, Mar 26, 2007	19.66	20.12	19.65	20.12
2599	NASDAQ	ARTNA	Fri, Mar 23, 2007	19.84	19.96	19.79	19.83
2598	NASDAQ	ARTNA	Thu, Mar 22, 2007	19.80	19.87	19.50	19.74
2597	NASDAQ	ARTNA	Wed, Mar 21, 2007	19.77	19.80	19.65	19.77
2596	NASDAQ	ARTNA	Tue, Mar 20, 2007	19.50	19.81	19.21	19.80
2595	NASDAQ	ARTNA	Mon, Mar 19, 2007	19.68	19.75	19.48	19.73
2594	NASDAQ	ARTNA	Fri, Mar 16, 2007	19.44	19.69	19.00	19.35
2593	NASDAQ	ARTNA	Thu, Mar 15, 2007	19.18	19.29	19.00	19.24
2592	NASDAQ	ARTNA	Wed, Mar 14, 2007	19.13	19.75	19.13	19.73
2591	NASDAQ	ARTNA	Tue, Mar 13, 2007	19.20	19.58	19.18	19.41
2590	NASDAQ	ARTNA	Mon, Mar 12, 2007	19.05	19.77	18.46	19.73
2589	NASDAQ	ARTNA	Fri, Mar 9, 2007	19.62	19.62	19.05	19.16
2588	NASDAQ	ARTNA	Thu, Mar 8, 2007	19.98	19.98	19.08	19.36
2587	NASDAQ	ARTNA	Wed, Mar 7, 2007	19.30	19.80	19.30	19.80
2586	NASDAQ	ARTNA	Tue, Mar 6, 2007	19.90	19.90	18.81	19.29
2585	NASDAQ	ARTNA	Mon, Mar 5, 2007	19.33	19.92	19.33	19.66
2584	NASDAQ	ARTNA	Fri, Mar 2, 2007	19.79	20.25	19.70	20.05
2583	NASDAQ	ARTNA	Thu, Mar 1, 2007	19.63	20.39	19.63	20.39
2582	NASDAQ	ARTNA	Wed, Feb 28, 2007	19.95	20.17	19.25	19.35
2581	NASDAQ	ARTNA	Tue, Feb 27, 2007	20.20	20.67	19.92	20.22
2580	NASDAQ	ARTNA	Mon, Feb 26, 2007	19.92	20.25	19.92	20.25
2579	NASDAQ	ARTNA	Fri, Feb 23, 2007	20.30	20.30	19.94	20.05
2578	NASDAQ	ARTNA	Thu, Feb 22, 2007	20.10	20.12	20.00	20.10
2577	NASDAQ	ARTNA	Wed, Feb 21, 2007	20.00	20.05	19.91	20.05
2576	NASDAQ	ARTNA	Tue, Feb 20, 2007	19.92	20.00	19.92	20.00
2575	NASDAQ	ARTNA	Fri, Feb 16, 2007	19.94	20.00	19.66	19.98
2574	NASDAQ	ARTNA	Thu, Feb 15, 2007	19.74	20.00	19.36	19.82
2573	NASDAQ	ARTNA	Wed, Feb 14, 2007	19.67	20.00	19.67	19.88
2572	NASDAQ	ARTNA	Tue, Feb 13, 2007	19.07	19.88	19.05	19.88
2571	NASDAQ	ARTNA	Mon, Feb 12, 2007	19.21	19.49	19.19	19.26
2570	NASDAQ	ARTNA	Fri, Feb 9, 2007	19.63	19.98	19.50	19.82
2569	NASDAQ	ARTNA	Thu, Feb 8, 2007	19.49	19.70	19.21	19.49
2568	NASDAQ	ARTNA	Wed, Feb 7, 2007	19.04	19.50	18.89	19.48
2567	NASDAQ	ARTNA	Tue, Feb 6, 2007	19.28	19.48	19.17	19.48
2566	NASDAQ	ARTNA	Mon, Feb 5, 2007	19.01	19.42	19.01	19.28
2565	NASDAQ	ARTNA	Fri, Feb 2, 2007	18.98	19.42	18.98	19.42
2564	NASDAQ	ARTNA	Thu, Feb 1, 2007	18.59	19.00	18.56	18.99
2563	NASDAQ	ARTNA	Wed, Jan 31, 2007	18.73	18.79	18.65	18.71
2562	NASDAQ	ARTNA	Tue, Jan 30, 2007	19.02	19.02	18.71	18.82
2561	NASDAQ	ARTNA	Mon, Jan 29, 2007	18.85	19.14	18.85	18.85
2560	NASDAQ	ARTNA	Fri, Jan 26, 2007	19.00	19.04	18.85	19.04
2559	NASDAQ	ARTNA	Thu, Jan 25, 2007	19.08	19.22	19.01	19.01
2558	NASDAQ	ARTNA	Wed, Jan 24, 2007	19.09	19.38	19.05	19.28
2557	NASDAQ	ARTNA	Tue, Jan 23, 2007	19.02	19.34	19.02	19.05
2556	NASDAQ	ARTNA	Mon, Jan 22, 2007	19.28	19.60	19.10	19.50
2555	NASDAQ	ARTNA	Fri, Jan 19, 2007	19.09	19.44	19.09	19.44
2554	NASDAQ	ARTNA	Thu, Jan 18, 2007	19.44	19.44	19.16	19.16
2553	NASDAQ	ARTNA	Wed, Jan 17, 2007	19.08	19.44	19.02	19.44
2552	NASDAQ	ARTNA	Tue, Jan 16, 2007	19.00	19.42	19.00	19.09
2551	NASDAQ	ARTNA	Fri, Jan 12, 2007	19.49	19.49	19.18	19.18
2550	NASDAQ	ARTNA	Thu, Jan 11, 2007	19.49	19.49	19.29	19.46
2549	NASDAQ	ARTNA	Wed, Jan 10, 2007	19.42	19.47	19.25	19.47
2548	NASDAQ	ARTNA	Tue, Jan 9, 2007	19.34	19.39	19.26	19.26
2547	NASDAQ	ARTNA	Mon, Jan 8, 2007	19.11	19.41	19.11	19.32
2546	NASDAQ	ARTNA	Fri, Jan 5, 2007	19.10	19.35	18.62	19.35
2545	NASDAQ	ARTNA	Thu, Jan 4, 2007	19.00	19.00	18.67	18.71
2544	NASDAQ	ARTNA	Wed, Jan 3, 2007	19.05	19.13	18.62	18.87
2543	NASDAQ	ARTNA	Fri, Dec 29, 2006	19.40	19.67	19.27	19.66
2542	NASDAQ	ARTNA	Thu, Dec 28, 2006	19.50	19.60	19.46	19.60
2541	NASDAQ	ARTNA	Wed, Dec 27, 2006	19.31	19.80	19.31	19.65
2540	NASDAQ	ARTNA	Tue, Dec 26, 2006	19.27	19.74	19.27	19.70
2539	NASDAQ	ARTNA	Fri, Dec 22, 2006	19.37	19.49	19.35	19.49
2538	NASDAQ	ARTNA	Thu, Dec 21, 2006	19.39	19.64	19.39	19.48
2537	NASDAQ	ARTNA	Wed, Dec 20, 2006	19.42	19.64	19.39	19.64
2536	NASDAQ	ARTNA	Tue, Dec 19, 2006	19.01	19.40	19.01	19.40
2535	NASDAQ	ARTNA	Mon, Dec 18, 2006	19.15	19.48	19.06	19.26
2534	NASDAQ	ARTNA	Fri, Dec 15, 2006	19.38	19.40	18.75	19.40
2533	NASDAQ	ARTNA	Thu, Dec 14, 2006	19.16	19.36	19.16	19.36
2532	NASDAQ	ARTNA	Wed, Dec 13, 2006	18.92	18.96	18.70	18.73
2531	NASDAQ	ARTNA	Tue, Dec 12, 2006	19.01	19.07	18.50	19.05
2530	NASDAQ	ARTNA	Mon, Dec 11, 2006	19.13	19.50	19.01	19.01
2529	NASDAQ	ARTNA	Fri, Dec 8, 2006	19.26	19.39	19.02	19.18
2528	NASDAQ	ARTNA	Thu, Dec 7, 2006	19.51	19.64	19.01	19.16
2527	NASDAQ	ARTNA	Wed, Dec 6, 2006	19.50	19.63	19.50	19.63
2526	NASDAQ	ARTNA	Tue, Dec 5, 2006	19.47	19.67	19.47	19.65
2525	NASDAQ	ARTNA	Mon, Dec 4, 2006	18.86	19.45	18.86	19.45
2524	NASDAQ	ARTNA	Fri, Dec 1, 2006	18.95	19.00	18.95	19.00
2523	NASDAQ	ARTNA	Thu, Nov 30, 2006	19.66	19.80	18.95	18.96
2522	NASDAQ	ARTNA	Wed, Nov 29, 2006	19.21	19.25	18.98	19.13
2521	NASDAQ	ARTNA	Tue, Nov 28, 2006	19.11	19.24	18.99	19.02
2520	NASDAQ	ARTNA	Mon, Nov 27, 2006	19.23	19.37	19.11	19.11
2519	NASDAQ	ARTNA	Fri, Nov 24, 2006	19.61	19.92	19.35	19.35
2518	NASDAQ	ARTNA	Wed, Nov 22, 2006	19.71	19.99	19.31	19.46
2517	NASDAQ	ARTNA	Tue, Nov 21, 2006	19.32	19.99	19.05	19.53
2516	NASDAQ	ARTNA	Mon, Nov 20, 2006	18.99	18.99	18.95	18.98
2515	NASDAQ	ARTNA	Fri, Nov 17, 2006	19.42	19.42	18.90	19.31
2514	NASDAQ	ARTNA	Thu, Nov 16, 2006	19.48	19.48	18.88	19.20
2513	NASDAQ	ARTNA	Wed, Nov 15, 2006	19.51	19.52	19.24	19.32
2512	NASDAQ	ARTNA	Tue, Nov 14, 2006	18.45	19.84	18.45	19.51
2511	NASDAQ	ARTNA	Mon, Nov 13, 2006	18.23	18.59	18.23	18.47
2510	NASDAQ	ARTNA	Fri, Nov 10, 2006	18.40	18.92	18.28	18.36
2509	NASDAQ	ARTNA	Thu, Nov 9, 2006	18.60	18.70	18.48	18.48
2508	NASDAQ	ARTNA	Wed, Nov 8, 2006	18.63	18.68	18.52	18.68
2507	NASDAQ	ARTNA	Tue, Nov 7, 2006	18.88	18.88	18.46	18.59
2506	NASDAQ	ARTNA	Mon, Nov 6, 2006	18.98	19.00	18.70	18.88
2505	NASDAQ	ARTNA	Fri, Nov 3, 2006	18.95	18.97	18.51	18.51
2504	NASDAQ	ARTNA	Thu, Nov 2, 2006	18.62	18.80	18.60	18.60
2503	NASDAQ	ARTNA	Wed, Nov 1, 2006	18.65	18.65	18.41	18.48
2502	NASDAQ	ARTNA	Tue, Oct 31, 2006	18.45	18.60	18.40	18.47
2501	NASDAQ	ARTNA	Mon, Oct 30, 2006	18.50	18.58	18.38	18.45
2500	NASDAQ	ARTNA	Fri, Oct 27, 2006	18.64	18.77	18.05	18.70
2499	NASDAQ	ARTNA	Thu, Oct 26, 2006	18.97	18.97	18.35	18.49
2498	NASDAQ	ARTNA	Wed, Oct 25, 2006	18.46	18.76	18.36	18.76
2497	NASDAQ	ARTNA	Tue, Oct 24, 2006	18.50	18.80	18.50	18.80
2496	NASDAQ	ARTNA	Mon, Oct 23, 2006	18.50	18.79	18.36	18.53
2495	NASDAQ	ARTNA	Fri, Oct 20, 2006	18.50	18.80	18.50	18.53
2494	NASDAQ	ARTNA	Thu, Oct 19, 2006	18.50	18.57	18.40	18.50
2493	NASDAQ	ARTNA	Wed, Oct 18, 2006	18.80	18.80	18.49	18.51
2492	NASDAQ	ARTNA	Tue, Oct 17, 2006	18.67	18.75	18.44	18.62
2491	NASDAQ	ARTNA	Mon, Oct 16, 2006	18.50	18.75	18.27	18.44
2490	NASDAQ	ARTNA	Fri, Oct 13, 2006	18.36	18.80	18.36	18.54
2489	NASDAQ	ARTNA	Thu, Oct 12, 2006	18.35	18.40	18.08	18.25
2488	NASDAQ	ARTNA	Wed, Oct 11, 2006	18.35	18.37	18.35	18.35
2487	NASDAQ	ARTNA	Tue, Oct 10, 2006	18.30	18.80	18.27	18.56
2486	NASDAQ	ARTNA	Mon, Oct 9, 2006	18.30	18.30	18.28	18.30
2485	NASDAQ	ARTNA	Fri, Oct 6, 2006	18.35	18.62	18.05	18.35
2484	NASDAQ	ARTNA	Thu, Oct 5, 2006	18.44	18.59	18.11	18.35
2483	NASDAQ	ARTNA	Wed, Oct 4, 2006	18.98	18.99	18.46	18.72
2482	NASDAQ	ARTNA	Tue, Oct 3, 2006	18.65	18.95	18.61	18.81
2481	NASDAQ	ARTNA	Mon, Oct 2, 2006	18.43	18.76	18.43	18.65
2480	NASDAQ	ARTNA	Fri, Sep 29, 2006	18.86	18.98	18.35	18.81
2479	NASDAQ	ARTNA	Thu, Sep 28, 2006	18.70	18.70	18.63	18.65
2478	NASDAQ	ARTNA	Wed, Sep 27, 2006	18.27	18.40	18.22	18.40
2477	NASDAQ	ARTNA	Tue, Sep 26, 2006	18.25	18.28	18.03	18.27
2476	NASDAQ	ARTNA	Mon, Sep 25, 2006	18.50	18.60	17.90	18.03
2475	NASDAQ	ARTNA	Fri, Sep 22, 2006	18.15	18.58	18.07	18.54
2474	NASDAQ	ARTNA	Thu, Sep 21, 2006	18.73	18.77	18.33	18.42
2473	NASDAQ	ARTNA	Wed, Sep 20, 2006	18.66	19.12	18.66	18.80
2472	NASDAQ	ARTNA	Tue, Sep 19, 2006	19.56	19.60	18.76	18.80
2471	NASDAQ	ARTNA	Mon, Sep 18, 2006	19.48	19.60	18.72	18.80
2470	NASDAQ	ARTNA	Fri, Sep 15, 2006	19.15	19.31	19.03	19.05
2469	NASDAQ	ARTNA	Thu, Sep 14, 2006	19.44	19.47	19.11	19.44
2468	NASDAQ	ARTNA	Wed, Sep 13, 2006	19.60	19.60	19.11	19.60
2467	NASDAQ	ARTNA	Tue, Sep 12, 2006	19.31	19.58	19.10	19.31
2466	NASDAQ	ARTNA	Mon, Sep 11, 2006	19.25	19.34	19.03	19.17
2465	NASDAQ	ARTNA	Fri, Sep 8, 2006	19.76	20.01	19.10	19.59
2464	NASDAQ	ARTNA	Wed, Sep 6, 2006	20.00	20.00	19.50	19.50
2463	NASDAQ	ARTNA	Tue, Sep 5, 2006	19.84	19.96	19.83	19.96
2462	NASDAQ	ARTNA	Fri, Sep 1, 2006	19.57	19.75	19.50	19.70
2461	NASDAQ	ARTNA	Thu, Aug 31, 2006	19.95	19.95	19.86	19.90
2460	NASDAQ	ARTNA	Wed, Aug 30, 2006	19.94	19.94	19.86	19.86
2459	NASDAQ	ARTNA	Tue, Aug 29, 2006	19.68	19.95	19.68	19.81
2458	NASDAQ	ARTNA	Mon, Aug 28, 2006	19.35	19.88	19.35	19.47
2457	NASDAQ	ARTNA	Fri, Aug 25, 2006	19.94	19.94	19.27	19.50
2456	NASDAQ	ARTNA	Thu, Aug 24, 2006	19.78	19.78	19.49	19.50
2455	NASDAQ	ARTNA	Wed, Aug 23, 2006	19.50	19.77	19.35	19.35
2454	NASDAQ	ARTNA	Tue, Aug 22, 2006	19.89	19.89	19.50	19.50
2453	NASDAQ	ARTNA	Mon, Aug 21, 2006	19.40	19.59	19.40	19.40
2452	NASDAQ	ARTNA	Fri, Aug 18, 2006	19.30	19.59	19.14	19.58
2451	NASDAQ	ARTNA	Thu, Aug 17, 2006	19.39	19.60	19.03	19.23
2450	NASDAQ	ARTNA	Wed, Aug 16, 2006	19.39	19.39	19.06	19.30
2449	NASDAQ	ARTNA	Tue, Aug 15, 2006	19.50	19.50	18.80	19.17
2448	NASDAQ	ARTNA	Mon, Aug 14, 2006	18.85	19.42	18.63	19.10
2447	NASDAQ	ARTNA	Fri, Aug 11, 2006	19.54	19.54	19.54	19.54
2446	NASDAQ	ARTNA	Thu, Aug 10, 2006	18.80	19.49	18.59	19.49
2445	NASDAQ	ARTNA	Wed, Aug 9, 2006	19.30	19.38	18.71	19.38
2444	NASDAQ	ARTNA	Tue, Aug 8, 2006	19.40	20.25	19.24	19.50
2443	NASDAQ	ARTNA	Mon, Aug 7, 2006	19.55	19.59	19.55	19.55
2442	NASDAQ	ARTNA	Fri, Aug 4, 2006	19.70	19.79	19.56	19.60
2441	NASDAQ	ARTNA	Thu, Aug 3, 2006	19.70	19.75	19.55	19.70
2440	NASDAQ	ARTNA	Wed, Aug 2, 2006	19.50	19.94	19.50	19.72
2439	NASDAQ	ARTNA	Tue, Aug 1, 2006	19.50	19.84	19.50	19.62
2438	NASDAQ	ARTNA	Mon, Jul 31, 2006	19.85	19.85	19.36	19.44
2437	NASDAQ	ARTNA	Fri, Jul 28, 2006	19.78	19.78	19.24	19.75
2436	NASDAQ	ARTNA	Thu, Jul 27, 2006	19.50	19.79	19.50	19.50
2435	NASDAQ	ARTNA	Wed, Jul 26, 2006	19.90	19.90	18.50	19.70
2434	NASDAQ	ARTNA	Tue, Jul 25, 2006	19.41	20.35	18.69	19.94
2433	NASDAQ	ARTNA	Mon, Jul 24, 2006	20.39	20.43	20.13	20.41
2432	NASDAQ	ARTNA	Fri, Jul 21, 2006	19.58	20.00	19.58	20.00
2431	NASDAQ	ARTNA	Thu, Jul 20, 2006	19.87	19.94	19.35	19.52
2430	NASDAQ	ARTNA	Wed, Jul 19, 2006	18.08	19.35	18.06	19.35
2429	NASDAQ	ARTNA	Tue, Jul 18, 2006	19.09	19.10	18.64	18.79
2428	NASDAQ	ARTNA	Mon, Jul 17, 2006	19.05	19.35	19.05	19.16
2427	NASDAQ	ARTNA	Fri, Jul 14, 2006	19.06	19.06	19.06	19.06
2426	NASDAQ	ARTNA	Thu, Jul 13, 2006	19.55	19.55	19.35	19.35
2425	NASDAQ	ARTNA	Wed, Jul 12, 2006	19.81	19.85	19.55	19.60
2424	NASDAQ	ARTNA	Tue, Jul 11, 2006	19.62	19.85	19.54	19.65
2423	NASDAQ	ARTNA	Mon, Jul 10, 2006	19.60	19.87	19.50	19.64
2422	NASDAQ	ARTNA	Fri, Jul 7, 2006	19.63	19.80	19.50	19.70
2421	NASDAQ	ARTNA	Thu, Jul 6, 2006	19.97	19.97	19.64	19.79
2420	NASDAQ	ARTNA	Wed, Jul 5, 2006	19.36	19.92	19.35	19.50
2419	NASDAQ	ARTNA	Mon, Jul 3, 2006	19.30	19.85	18.23	19.85
2418	NASDAQ	ARTNA	Fri, Jun 30, 2006	19.97	19.97	19.21	19.48
2417	NASDAQ	ARTNA	Thu, Jun 29, 2006	18.72	19.07	18.72	18.89
2416	NASDAQ	ARTNA	Wed, Jun 28, 2006	19.12	19.41	19.12	19.41
2415	NASDAQ	ARTNA	Tue, Jun 27, 2006	18.59	18.93	18.51	18.93
2414	NASDAQ	ARTNA	Mon, Jun 26, 2006	18.33	18.61	18.33	18.40
2413	NASDAQ	ARTNA	Fri, Jun 23, 2006	18.75	18.75	18.75	18.75
2412	NASDAQ	ARTNA	Thu, Jun 22, 2006	19.30	19.30	18.80	18.80
2411	NASDAQ	ARTNA	Wed, Jun 21, 2006	18.67	18.99	18.37	18.99
2410	NASDAQ	ARTNA	Tue, Jun 20, 2006	18.87	18.98	18.87	18.98
2409	NASDAQ	ARTNA	Mon, Jun 19, 2006	19.40	19.40	19.17	19.17
2408	NASDAQ	ARTNA	Fri, Jun 16, 2006	18.83	19.33	18.73	19.33
2407	NASDAQ	ARTNA	Thu, Jun 15, 2006	18.89	18.89	18.87	18.89
2406	NASDAQ	ARTNA	Wed, Jun 14, 2006	19.39	19.49	18.83	18.89
2405	NASDAQ	ARTNA	Tue, Jun 13, 2006	19.50	19.50	19.33	19.50
2404	NASDAQ	ARTNA	Mon, Jun 12, 2006	19.70	19.77	19.51	19.51
2403	NASDAQ	ARTNA	Fri, Jun 9, 2006	20.00	20.00	19.70	19.70
2402	NASDAQ	ARTNA	Thu, Jun 8, 2006	20.50	20.50	20.01	20.01
2401	NASDAQ	ARTNA	Wed, Jun 7, 2006	20.49	20.49	20.48	20.49
2400	NASDAQ	ARTNA	Tue, Jun 6, 2006	20.34	20.34	20.23	20.23
2399	NASDAQ	ARTNA	Mon, Jun 5, 2006	20.17	20.50	20.17	20.50
2398	NASDAQ	ARTNA	Thu, Jun 1, 2006	19.95	20.33	19.95	20.33
2397	NASDAQ	ARTNA	Wed, May 31, 2006	20.11	20.13	20.04	20.05
2396	NASDAQ	ARTNA	Tue, May 30, 2006	20.33	20.50	20.17	20.44
2395	NASDAQ	ARTNA	Fri, May 26, 2006	20.33	20.33	20.11	20.28
2394	NASDAQ	ARTNA	Thu, May 25, 2006	20.30	20.30	20.00	20.00
2393	NASDAQ	ARTNA	Wed, May 24, 2006	20.23	20.25	19.78	19.95
2392	NASDAQ	ARTNA	Tue, May 23, 2006	20.07	20.19	20.07	20.07
2391	NASDAQ	ARTNA	Mon, May 22, 2006	20.33	20.33	19.94	20.00
2390	NASDAQ	ARTNA	Fri, May 19, 2006	20.00	20.45	20.00	20.45
2389	NASDAQ	ARTNA	Thu, May 18, 2006	20.06	20.20	20.06	20.20
2388	NASDAQ	ARTNA	Wed, May 17, 2006	20.02	20.45	20.01	20.37
2387	NASDAQ	ARTNA	Tue, May 16, 2006	20.60	20.60	20.00	20.56
2386	NASDAQ	ARTNA	Mon, May 15, 2006	21.11	21.11	20.35	20.35
2385	NASDAQ	ARTNA	Fri, May 12, 2006	20.03	21.11	20.03	21.11
2384	NASDAQ	ARTNA	Thu, May 11, 2006	20.34	20.62	20.07	20.58
2383	NASDAQ	ARTNA	Wed, May 10, 2006	20.30	20.95	20.30	20.80
2382	NASDAQ	ARTNA	Tue, May 9, 2006	20.21	20.66	20.21	20.66
2381	NASDAQ	ARTNA	Mon, May 8, 2006	20.67	20.83	20.40	20.49
2380	NASDAQ	ARTNA	Fri, May 5, 2006	20.52	21.00	20.51	21.00
2379	NASDAQ	ARTNA	Thu, May 4, 2006	21.04	21.04	20.95	20.95
2378	NASDAQ	ARTNA	Wed, May 3, 2006	20.76	21.27	20.76	21.27
2377	NASDAQ	ARTNA	Tue, May 2, 2006	21.00	21.15	21.00	21.15
2376	NASDAQ	ARTNA	Mon, May 1, 2006	21.15	21.15	20.91	21.00
2375	NASDAQ	ARTNA	Fri, Apr 28, 2006	21.07	21.07	20.88	20.99
2374	NASDAQ	ARTNA	Thu, Apr 27, 2006	20.71	21.23	20.71	21.10
2373	NASDAQ	ARTNA	Wed, Apr 26, 2006	20.47	21.24	20.47	21.07
2372	NASDAQ	ARTNA	Tue, Apr 25, 2006	20.67	20.84	20.67	20.67
2371	NASDAQ	ARTNA	Mon, Apr 24, 2006	20.99	21.33	20.71	20.72
2370	NASDAQ	ARTNA	Fri, Apr 21, 2006	20.23	20.73	20.22	20.73
2369	NASDAQ	ARTNA	Thu, Apr 20, 2006	20.79	20.79	20.45	20.66
2368	NASDAQ	ARTNA	Wed, Apr 19, 2006	20.42	20.63	20.42	20.53
2367	NASDAQ	ARTNA	Tue, Apr 18, 2006	20.37	20.58	20.23	20.58
2366	NASDAQ	ARTNA	Mon, Apr 17, 2006	20.51	20.67	20.51	20.65
2365	NASDAQ	ARTNA	Thu, Apr 13, 2006	20.87	20.87	20.77	20.77
2364	NASDAQ	ARTNA	Wed, Apr 12, 2006	20.73	21.05	20.73	20.87
2363	NASDAQ	ARTNA	Tue, Apr 11, 2006	20.79	21.00	20.79	21.00
2362	NASDAQ	ARTNA	Mon, Apr 10, 2006	20.76	20.76	20.73	20.73
2361	NASDAQ	ARTNA	Fri, Apr 7, 2006	20.99	20.99	20.99	20.99
2360	NASDAQ	ARTNA	Thu, Apr 6, 2006	21.70	21.70	21.15	21.15
2359	NASDAQ	ARTNA	Wed, Apr 5, 2006	21.00	21.95	20.67	21.11
2358	NASDAQ	ARTNA	Tue, Apr 4, 2006	22.27	22.27	20.93	21.97
2357	NASDAQ	ARTNA	Mon, Apr 3, 2006	22.00	22.27	22.00	22.27
2356	NASDAQ	ARTNA	Fri, Mar 31, 2006	22.16	22.33	22.09	22.27
2355	NASDAQ	ARTNA	Thu, Mar 30, 2006	21.90	22.17	21.90	22.17
2354	NASDAQ	ARTNA	Wed, Mar 29, 2006	21.33	22.15	21.25	22.09
2353	NASDAQ	ARTNA	Tue, Mar 28, 2006	20.63	21.33	20.63	21.33
2352	NASDAQ	ARTNA	Mon, Mar 27, 2006	20.81	20.81	20.20	20.50
2351	NASDAQ	ARTNA	Fri, Mar 24, 2006	20.11	20.65	20.11	20.65
2350	NASDAQ	ARTNA	Thu, Mar 23, 2006	20.01	20.59	19.94	20.59
2349	NASDAQ	ARTNA	Wed, Mar 22, 2006	19.92	20.13	19.77	20.13
2348	NASDAQ	ARTNA	Tue, Mar 21, 2006	20.13	20.13	19.78	20.13
2347	NASDAQ	ARTNA	Mon, Mar 20, 2006	20.06	20.07	19.77	20.04
2346	NASDAQ	ARTNA	Fri, Mar 17, 2006	20.03	20.17	19.70	19.81
2345	NASDAQ	ARTNA	Thu, Mar 16, 2006	19.67	19.93	19.67	19.93
2344	NASDAQ	ARTNA	Wed, Mar 15, 2006	19.83	19.93	19.70	19.73
2343	NASDAQ	ARTNA	Tue, Mar 14, 2006	19.74	19.74	19.67	19.74
2342	NASDAQ	ARTNA	Mon, Mar 13, 2006	19.61	19.91	19.60	19.75
2341	NASDAQ	ARTNA	Fri, Mar 10, 2006	19.67	19.93	19.60	19.83
2340	NASDAQ	ARTNA	Thu, Mar 9, 2006	19.67	20.00	19.65	19.66
2339	NASDAQ	ARTNA	Wed, Mar 8, 2006	19.55	19.91	19.53	19.67
2338	NASDAQ	ARTNA	Tue, Mar 7, 2006	19.83	19.83	19.83	19.83
2337	NASDAQ	ARTNA	Mon, Mar 6, 2006	19.83	19.83	19.50	19.83
2336	NASDAQ	ARTNA	Fri, Mar 3, 2006	19.83	19.83	19.62	19.70
2335	NASDAQ	ARTNA	Thu, Mar 2, 2006	19.51	19.73	19.51	19.60
2334	NASDAQ	ARTNA	Wed, Mar 1, 2006	19.83	19.83	19.50	19.74
2333	NASDAQ	ARTNA	Tue, Feb 28, 2006	19.63	19.89	19.50	19.64
2332	NASDAQ	ARTNA	Mon, Feb 27, 2006	19.81	19.85	19.45	19.76
2331	NASDAQ	ARTNA	Fri, Feb 24, 2006	19.90	19.90	19.43	19.76
2330	NASDAQ	ARTNA	Thu, Feb 23, 2006	19.40	19.83	19.40	19.83
2329	NASDAQ	ARTNA	Wed, Feb 22, 2006	19.80	19.87	19.67	19.87
2328	NASDAQ	ARTNA	Tue, Feb 21, 2006	19.59	19.77	19.44	19.65
2327	NASDAQ	ARTNA	Fri, Feb 17, 2006	19.67	19.85	19.50	19.85
2326	NASDAQ	ARTNA	Thu, Feb 16, 2006	19.71	19.90	19.71	19.87
2325	NASDAQ	ARTNA	Wed, Feb 15, 2006	19.67	19.90	19.67	19.82
2324	NASDAQ	ARTNA	Tue, Feb 14, 2006	19.45	19.84	19.45	19.84
2323	NASDAQ	ARTNA	Mon, Feb 13, 2006	19.34	19.91	19.34	19.67
2322	NASDAQ	ARTNA	Fri, Feb 10, 2006	19.50	19.60	19.50	19.60
2321	NASDAQ	ARTNA	Thu, Feb 9, 2006	19.93	19.93	19.39	19.87
2320	NASDAQ	ARTNA	Wed, Feb 8, 2006	19.78	19.95	19.63	19.95
2319	NASDAQ	ARTNA	Tue, Feb 7, 2006	19.47	19.83	19.47	19.83
2318	NASDAQ	ARTNA	Mon, Feb 6, 2006	19.34	19.92	19.34	19.82
2317	NASDAQ	ARTNA	Fri, Feb 3, 2006	19.86	19.93	19.42	19.42
2316	NASDAQ	ARTNA	Thu, Feb 2, 2006	19.71	19.71	19.53	19.62
2315	NASDAQ	ARTNA	Wed, Feb 1, 2006	20.00	20.01	19.69	19.90
2314	NASDAQ	ARTNA	Tue, Jan 31, 2006	19.53	19.92	19.53	19.83
2313	NASDAQ	ARTNA	Mon, Jan 30, 2006	19.55	19.83	19.55	19.75
2312	NASDAQ	ARTNA	Fri, Jan 27, 2006	19.33	19.95	19.33	19.85
2311	NASDAQ	ARTNA	Thu, Jan 26, 2006	19.73	19.74	19.57	19.74
2310	NASDAQ	ARTNA	Wed, Jan 25, 2006	19.67	19.67	19.67	19.67
2309	NASDAQ	ARTNA	Tue, Jan 24, 2006	19.80	19.87	19.73	19.73
2308	NASDAQ	ARTNA	Mon, Jan 23, 2006	20.01	20.01	19.80	19.80
2307	NASDAQ	ARTNA	Fri, Jan 20, 2006	19.90	19.90	19.90	19.90
2306	NASDAQ	ARTNA	Thu, Jan 19, 2006	19.69	19.87	19.67	19.87
2305	NASDAQ	ARTNA	Wed, Jan 18, 2006	19.47	19.85	19.47	19.85
2304	NASDAQ	ARTNA	Tue, Jan 17, 2006	19.86	19.95	19.44	19.95
2303	NASDAQ	ARTNA	Fri, Jan 13, 2006	19.67	19.67	19.42	19.51
2302	NASDAQ	ARTNA	Thu, Jan 12, 2006	19.73	19.73	19.67	19.67
2301	NASDAQ	ARTNA	Wed, Jan 11, 2006	19.41	19.67	19.41	19.67
2300	NASDAQ	ARTNA	Tue, Jan 10, 2006	19.46	19.67	19.46	19.67
2299	NASDAQ	ARTNA	Mon, Jan 9, 2006	19.38	19.73	19.38	19.67
2298	NASDAQ	ARTNA	Fri, Jan 6, 2006	19.97	20.00	19.40	19.67
2297	NASDAQ	ARTNA	Thu, Jan 5, 2006	19.47	19.75	19.37	19.70
2296	NASDAQ	ARTNA	Wed, Jan 4, 2006	19.68	19.75	19.60	19.75
2295	NASDAQ	ARTNA	Tue, Jan 3, 2006	19.97	19.97	19.50	19.67
2294	NASDAQ	ARTNA	Fri, Dec 30, 2005	19.78	19.83	19.55	19.73
2293	NASDAQ	ARTNA	Thu, Dec 29, 2005	19.97	19.97	19.53	19.53
2292	NASDAQ	ARTNA	Wed, Dec 28, 2005	19.61	19.89	19.60	19.85
2291	NASDAQ	ARTNA	Tue, Dec 27, 2005	19.60	19.97	19.35	19.97
2290	NASDAQ	ARTNA	Fri, Dec 23, 2005	19.49	19.83	19.49	19.74
2289	NASDAQ	ARTNA	Thu, Dec 22, 2005	19.35	19.49	19.04	19.33
2288	NASDAQ	ARTNA	Wed, Dec 21, 2005	19.56	19.58	19.07	19.58
2287	NASDAQ	ARTNA	Tue, Dec 20, 2005	19.40	19.70	19.33	19.70
2286	NASDAQ	ARTNA	Mon, Dec 19, 2005	19.61	19.73	19.61	19.61
2285	NASDAQ	ARTNA	Fri, Dec 16, 2005	19.73	19.83	19.73	19.83
2284	NASDAQ	ARTNA	Thu, Dec 15, 2005	19.79	20.03	19.59	19.59
2283	NASDAQ	ARTNA	Wed, Dec 14, 2005	19.99	20.00	19.89	20.00
2282	NASDAQ	ARTNA	Tue, Dec 13, 2005	19.79	20.00	19.79	19.93
2281	NASDAQ	ARTNA	Mon, Dec 12, 2005	19.90	19.90	19.80	19.80
2280	NASDAQ	ARTNA	Fri, Dec 9, 2005	20.00	20.00	19.79	19.90
2279	NASDAQ	ARTNA	Thu, Dec 8, 2005	19.79	20.00	19.79	19.90
2278	NASDAQ	ARTNA	Wed, Dec 7, 2005	19.89	19.89	19.67	19.87
2277	NASDAQ	ARTNA	Tue, Dec 6, 2005	19.87	19.87	19.83	19.83
2276	NASDAQ	ARTNA	Mon, Dec 5, 2005	19.87	20.15	19.87	20.02
2275	NASDAQ	ARTNA	Fri, Dec 2, 2005	20.00	20.00	19.90	19.91
2274	NASDAQ	ARTNA	Thu, Dec 1, 2005	19.83	20.15	19.83	20.00
2273	NASDAQ	ARTNA	Wed, Nov 30, 2005	19.64	19.86	19.64	19.83
2272	NASDAQ	ARTNA	Tue, Nov 29, 2005	19.45	20.00	19.45	20.00
2271	NASDAQ	ARTNA	Mon, Nov 28, 2005	19.61	19.85	19.37	19.85
2270	NASDAQ	ARTNA	Fri, Nov 25, 2005	19.90	19.99	19.90	19.99
2269	NASDAQ	ARTNA	Wed, Nov 23, 2005	19.93	20.00	19.33	20.00
2268	NASDAQ	ARTNA	Tue, Nov 22, 2005	20.00	20.00	19.60	19.79
2267	NASDAQ	ARTNA	Mon, Nov 21, 2005	20.00	20.26	19.90	20.06
2266	NASDAQ	ARTNA	Fri, Nov 18, 2005	19.67	20.13	19.62	20.13
2265	NASDAQ	ARTNA	Thu, Nov 17, 2005	20.10	20.10	19.90	20.00
2264	NASDAQ	ARTNA	Wed, Nov 16, 2005	19.60	20.17	19.60	20.00
2263	NASDAQ	ARTNA	Tue, Nov 15, 2005	19.64	20.27	19.61	19.61
2262	NASDAQ	ARTNA	Mon, Nov 14, 2005	19.81	20.10	19.81	19.90
2261	NASDAQ	ARTNA	Fri, Nov 11, 2005	20.00	20.33	20.00	20.17
2260	NASDAQ	ARTNA	Thu, Nov 10, 2005	20.06	20.61	20.06	20.17
2259	NASDAQ	ARTNA	Wed, Nov 9, 2005	20.73	20.79	19.85	20.04
2258	NASDAQ	ARTNA	Tue, Nov 8, 2005	20.55	20.55	20.55	20.55
2257	NASDAQ	ARTNA	Mon, Nov 7, 2005	20.71	20.80	20.31	20.31
2256	NASDAQ	ARTNA	Fri, Nov 4, 2005	19.22	20.05	19.22	19.55
2255	NASDAQ	ARTNA	Thu, Nov 3, 2005	20.16	20.16	19.71	19.90
2254	NASDAQ	ARTNA	Wed, Nov 2, 2005	19.84	20.40	19.69	19.93
2253	NASDAQ	ARTNA	Tue, Nov 1, 2005	19.75	19.75	19.63	19.63
2252	NASDAQ	ARTNA	Mon, Oct 31, 2005	19.80	19.80	19.19	19.32
2251	NASDAQ	ARTNA	Fri, Oct 28, 2005	19.69	19.69	19.31	19.39
2250	NASDAQ	ARTNA	Thu, Oct 27, 2005	19.58	19.58	19.52	19.53
2249	NASDAQ	ARTNA	Wed, Oct 26, 2005	19.79	19.84	19.58	19.58
2248	NASDAQ	ARTNA	Tue, Oct 25, 2005	19.33	19.73	19.33	19.73
2247	NASDAQ	ARTNA	Mon, Oct 24, 2005	19.30	19.40	19.19	19.40
2246	NASDAQ	ARTNA	Fri, Oct 21, 2005	18.75	19.53	18.75	19.29
2245	NASDAQ	ARTNA	Thu, Oct 20, 2005	19.82	19.83	19.37	19.41
2244	NASDAQ	ARTNA	Wed, Oct 19, 2005	19.79	19.93	19.40	19.40
2243	NASDAQ	ARTNA	Tue, Oct 18, 2005	19.85	19.85	19.43	19.67
2242	NASDAQ	ARTNA	Mon, Oct 17, 2005	19.69	19.74	19.57	19.66
2241	NASDAQ	ARTNA	Fri, Oct 14, 2005	19.37	19.81	19.37	19.37
2240	NASDAQ	ARTNA	Thu, Oct 13, 2005	19.60	19.65	19.37	19.63
2239	NASDAQ	ARTNA	Wed, Oct 12, 2005	19.97	19.98	19.67	19.67
2238	NASDAQ	ARTNA	Mon, Oct 10, 2005	20.21	20.21	19.97	19.97
2237	NASDAQ	ARTNA	Fri, Oct 7, 2005	20.00	20.00	19.60	19.60
2236	NASDAQ	ARTNA	Thu, Oct 6, 2005	20.10	20.13	19.93	19.93
2235	NASDAQ	ARTNA	Wed, Oct 5, 2005	20.32	21.00	20.07	20.10
2234	NASDAQ	ARTNA	Tue, Oct 4, 2005	20.35	20.67	20.35	20.67
2233	NASDAQ	ARTNA	Mon, Oct 3, 2005	20.53	20.67	20.53	20.67
2232	NASDAQ	ARTNA	Fri, Sep 30, 2005	20.05	20.33	20.05	20.33
2231	NASDAQ	ARTNA	Thu, Sep 29, 2005	20.47	20.49	20.15	20.23
2230	NASDAQ	ARTNA	Wed, Sep 28, 2005	20.13	20.53	20.13	20.41
2229	NASDAQ	ARTNA	Tue, Sep 27, 2005	20.33	20.33	20.05	20.31
2228	NASDAQ	ARTNA	Mon, Sep 26, 2005	20.59	20.59	20.53	20.53
2227	NASDAQ	ARTNA	Fri, Sep 23, 2005	20.99	21.00	20.68	20.68
2226	NASDAQ	ARTNA	Thu, Sep 22, 2005	21.27	21.32	20.77	21.32
2225	NASDAQ	ARTNA	Wed, Sep 21, 2005	21.13	21.33	21.13	21.13
2224	NASDAQ	ARTNA	Tue, Sep 20, 2005	20.88	21.33	20.41	21.33
2223	NASDAQ	ARTNA	Mon, Sep 19, 2005	20.38	20.55	20.23	20.55
2222	NASDAQ	ARTNA	Fri, Sep 16, 2005	20.90	20.90	20.39	20.67
2221	NASDAQ	ARTNA	Thu, Sep 15, 2005	19.70	20.58	19.70	20.58
2220	NASDAQ	ARTNA	Wed, Sep 14, 2005	20.07	20.07	19.77	19.99
2219	NASDAQ	ARTNA	Tue, Sep 13, 2005	20.00	20.29	20.00	20.07
2218	NASDAQ	ARTNA	Mon, Sep 12, 2005	20.65	20.65	20.01	20.22
2217	NASDAQ	ARTNA	Fri, Sep 9, 2005	20.56	20.80	20.50	20.51
2216	NASDAQ	ARTNA	Thu, Sep 8, 2005	20.20	20.46	20.20	20.40
2215	NASDAQ	ARTNA	Wed, Sep 7, 2005	20.47	20.47	20.00	20.41
2214	NASDAQ	ARTNA	Tue, Sep 6, 2005	19.95	20.55	19.83	19.93
2213	NASDAQ	ARTNA	Fri, Sep 2, 2005	20.00	20.60	19.87	19.88
2212	NASDAQ	ARTNA	Thu, Sep 1, 2005	20.17	20.17	20.00	20.03
2211	NASDAQ	ARTNA	Wed, Aug 31, 2005	20.07	20.52	20.00	20.05
2210	NASDAQ	ARTNA	Tue, Aug 30, 2005	20.57	20.57	20.00	20.03
2209	NASDAQ	ARTNA	Mon, Aug 29, 2005	20.80	20.80	20.18	20.20
2208	NASDAQ	ARTNA	Fri, Aug 26, 2005	21.02	21.02	20.39	20.39
2207	NASDAQ	ARTNA	Thu, Aug 25, 2005	20.33	20.39	20.00	20.38
2206	NASDAQ	ARTNA	Wed, Aug 24, 2005	20.29	20.31	20.10	20.10
2205	NASDAQ	ARTNA	Tue, Aug 23, 2005	20.17	20.33	20.00	20.01
2204	NASDAQ	ARTNA	Mon, Aug 22, 2005	20.50	20.50	20.00	20.09
2203	NASDAQ	ARTNA	Fri, Aug 19, 2005	20.18	20.43	20.01	20.43
2202	NASDAQ	ARTNA	Thu, Aug 18, 2005	20.50	20.65	20.01	20.06
2201	NASDAQ	ARTNA	Wed, Aug 17, 2005	21.00	21.00	20.52	20.57
2200	NASDAQ	ARTNA	Tue, Aug 16, 2005	21.03	21.03	20.67	20.68
2199	NASDAQ	ARTNA	Mon, Aug 15, 2005	21.30	21.30	21.07	21.07
2198	NASDAQ	ARTNA	Fri, Aug 12, 2005	21.68	21.68	21.17	21.35
2197	NASDAQ	ARTNA	Thu, Aug 11, 2005	21.35	21.79	21.33	21.50
2196	NASDAQ	ARTNA	Wed, Aug 10, 2005	22.00	22.00	21.47	21.53
2195	NASDAQ	ARTNA	Tue, Aug 9, 2005	21.39	21.40	21.37	21.37
2194	NASDAQ	ARTNA	Mon, Aug 8, 2005	21.56	21.95	21.45	21.49
2193	NASDAQ	ARTNA	Fri, Aug 5, 2005	21.93	21.93	21.37	21.50
2192	NASDAQ	ARTNA	Thu, Aug 4, 2005	21.91	21.93	21.91	21.93
2191	NASDAQ	ARTNA	Wed, Aug 3, 2005	21.36	21.97	21.33	21.89
2190	NASDAQ	ARTNA	Tue, Aug 2, 2005	21.93	21.93	21.65	21.67
2189	NASDAQ	ARTNA	Mon, Aug 1, 2005	21.34	21.43	21.33	21.43
2188	NASDAQ	ARTNA	Fri, Jul 29, 2005	21.27	21.99	21.27	21.57
2187	NASDAQ	ARTNA	Thu, Jul 28, 2005	20.83	21.69	20.83	21.50
2186	NASDAQ	ARTNA	Wed, Jul 27, 2005	20.67	21.13	20.67	21.13
2185	NASDAQ	ARTNA	Tue, Jul 26, 2005	20.26	20.65	20.08	20.10
2184	NASDAQ	ARTNA	Mon, Jul 25, 2005	20.03	20.03	19.97	19.99
2183	NASDAQ	ARTNA	Fri, Jul 22, 2005	19.99	20.17	19.99	20.01
2182	NASDAQ	ARTNA	Thu, Jul 21, 2005	20.26	20.26	19.58	19.83
2181	NASDAQ	ARTNA	Wed, Jul 20, 2005	19.57	19.95	19.57	19.95
2180	NASDAQ	ARTNA	Tue, Jul 19, 2005	20.57	20.57	19.57	19.68
2179	NASDAQ	ARTNA	Mon, Jul 18, 2005	20.57	20.57	20.00	20.25
2178	NASDAQ	ARTNA	Fri, Jul 15, 2005	20.10	20.55	20.00	20.21
2177	NASDAQ	ARTNA	Thu, Jul 14, 2005	20.33	20.39	20.10	20.39
2176	NASDAQ	ARTNA	Wed, Jul 13, 2005	20.02	20.33	20.02	20.33
2175	NASDAQ	ARTNA	Tue, Jul 12, 2005	20.34	20.57	20.00	20.11
2174	NASDAQ	ARTNA	Mon, Jul 11, 2005	20.33	20.57	20.17	20.57
2173	NASDAQ	ARTNA	Fri, Jul 8, 2005	20.03	20.33	20.03	20.33
2172	NASDAQ	ARTNA	Thu, Jul 7, 2005	19.47	20.27	19.47	20.00
2171	NASDAQ	ARTNA	Wed, Jul 6, 2005	19.47	20.32	19.47	19.72
2170	NASDAQ	ARTNA	Tue, Jul 5, 2005	20.17	20.33	19.83	20.07
2169	NASDAQ	ARTNA	Fri, Jul 1, 2005	19.99	20.17	19.92	19.92
2168	NASDAQ	ARTNA	Thu, Jun 30, 2005	20.57	20.57	19.74	19.74
2167	NASDAQ	ARTNA	Wed, Jun 29, 2005	20.01	20.50	20.01	20.50
2166	NASDAQ	ARTNA	Tue, Jun 28, 2005	20.50	20.83	20.40	20.40
2165	NASDAQ	ARTNA	Mon, Jun 27, 2005	20.58	20.67	20.44	20.67
2164	NASDAQ	ARTNA	Fri, Jun 24, 2005	20.61	20.67	20.61	20.63
2163	NASDAQ	ARTNA	Thu, Jun 23, 2005	20.63	20.67	20.51	20.61
2162	NASDAQ	ARTNA	Wed, Jun 22, 2005	20.15	20.66	20.15	20.47
2161	NASDAQ	ARTNA	Tue, Jun 21, 2005	19.33	20.23	19.33	19.85
2160	NASDAQ	ARTNA	Mon, Jun 20, 2005	19.66	19.66	19.05	19.45
2159	NASDAQ	ARTNA	Fri, Jun 17, 2005	18.95	19.44	18.95	19.44
2158	NASDAQ	ARTNA	Thu, Jun 16, 2005	19.39	19.67	19.20	19.20
2157	NASDAQ	ARTNA	Wed, Jun 15, 2005	19.77	19.77	19.11	19.65
2156	NASDAQ	ARTNA	Tue, Jun 14, 2005	19.77	19.77	19.21	19.58
2155	NASDAQ	ARTNA	Mon, Jun 13, 2005	19.19	19.76	19.19	19.27
2154	NASDAQ	ARTNA	Fri, Jun 10, 2005	19.53	19.67	19.10	19.35
2153	NASDAQ	ARTNA	Thu, Jun 9, 2005	20.39	20.39	19.68	19.75
2152	NASDAQ	ARTNA	Wed, Jun 8, 2005	20.74	20.98	20.39	20.39
2151	NASDAQ	ARTNA	Tue, Jun 7, 2005	21.02	21.25	20.96	20.97
2150	NASDAQ	ARTNA	Mon, Jun 6, 2005	20.96	21.33	20.96	21.33
2149	NASDAQ	ARTNA	Fri, Jun 3, 2005	20.97	20.97	20.97	20.97
2148	NASDAQ	ARTNA	Thu, Jun 2, 2005	20.94	21.17	20.94	21.07
2147	NASDAQ	ARTNA	Wed, Jun 1, 2005	21.43	21.47	20.93	21.15
2146	NASDAQ	ARTNA	Tue, May 31, 2005	21.99	21.99	21.33	21.51
2145	NASDAQ	ARTNA	Fri, May 27, 2005	21.67	21.78	21.26	21.33
2144	NASDAQ	ARTNA	Thu, May 26, 2005	21.65	21.66	21.25	21.27
2143	NASDAQ	ARTNA	Wed, May 25, 2005	21.44	21.67	21.35	21.35
2142	NASDAQ	ARTNA	Tue, May 24, 2005	21.18	21.27	21.18	21.27
2141	NASDAQ	ARTNA	Mon, May 23, 2005	21.07	21.07	20.95	21.07
2140	NASDAQ	ARTNA	Fri, May 20, 2005	21.11	21.33	20.85	20.85
2139	NASDAQ	ARTNA	Thu, May 19, 2005	21.67	21.92	21.17	21.17
2138	NASDAQ	ARTNA	Wed, May 18, 2005	21.21	22.60	20.93	21.67
2137	NASDAQ	ARTNA	Tue, May 17, 2005	20.70	21.99	20.70	21.99
2136	NASDAQ	ARTNA	Mon, May 16, 2005	20.96	21.92	20.96	21.59
2135	NASDAQ	ARTNA	Fri, May 13, 2005	22.62	22.62	20.60	21.93
2134	NASDAQ	ARTNA	Thu, May 12, 2005	22.00	22.00	20.00	21.19
2133	NASDAQ	ARTNA	Wed, May 11, 2005	20.83	20.83	20.35	20.83
2132	NASDAQ	ARTNA	Tue, May 10, 2005	20.30	20.50	19.99	20.50
2131	NASDAQ	ARTNA	Mon, May 9, 2005	20.27	20.30	19.91	19.91
2130	NASDAQ	ARTNA	Fri, May 6, 2005	20.00	20.53	20.00	20.10
2129	NASDAQ	ARTNA	Thu, May 5, 2005	20.83	20.83	20.21	20.29
2128	NASDAQ	ARTNA	Wed, May 4, 2005	20.53	20.83	20.44	20.54
2127	NASDAQ	ARTNA	Tue, May 3, 2005	20.00	21.14	20.00	20.69
2126	NASDAQ	ARTNA	Mon, May 2, 2005	19.81	20.33	19.81	20.02
2125	NASDAQ	ARTNA	Fri, Apr 29, 2005	19.75	19.82	18.81	19.82
2124	NASDAQ	ARTNA	Thu, Apr 28, 2005	19.15	19.15	18.79	18.99
2123	NASDAQ	ARTNA	Wed, Apr 27, 2005	19.17	19.17	18.73	18.91
2122	NASDAQ	ARTNA	Tue, Apr 26, 2005	20.56	21.05	19.00	19.16
2121	NASDAQ	ARTNA	Mon, Apr 25, 2005	20.00	20.00	19.23	19.23
2120	NASDAQ	ARTNA	Fri, Apr 22, 2005	19.63	19.97	19.63	19.97
2119	NASDAQ	ARTNA	Thu, Apr 21, 2005	19.51	19.89	19.47	19.73
2118	NASDAQ	ARTNA	Wed, Apr 20, 2005	18.67	19.47	18.21	19.47
2117	NASDAQ	ARTNA	Tue, Apr 19, 2005	20.00	20.00	18.68	18.68
2116	NASDAQ	ARTNA	Mon, Apr 18, 2005	18.53	20.69	18.53	19.86
2115	NASDAQ	ARTNA	Fri, Apr 15, 2005	18.53	18.53	18.26	18.53
2114	NASDAQ	ARTNA	Thu, Apr 14, 2005	18.27	18.47	18.06	18.09
2113	NASDAQ	ARTNA	Wed, Apr 13, 2005	18.05	18.53	18.05	18.33
2112	NASDAQ	ARTNA	Tue, Apr 12, 2005	17.97	18.27	17.97	18.06
2111	NASDAQ	ARTNA	Mon, Apr 11, 2005	17.41	17.96	17.41	17.95
2110	NASDAQ	ARTNA	Fri, Apr 8, 2005	17.78	17.78	17.47	17.78
2109	NASDAQ	ARTNA	Thu, Apr 7, 2005	17.60	17.78	17.45	17.45
2108	NASDAQ	ARTNA	Wed, Apr 6, 2005	17.40	17.57	17.39	17.57
2107	NASDAQ	ARTNA	Tue, Apr 5, 2005	17.50	17.59	17.37	17.59
2106	NASDAQ	ARTNA	Mon, Apr 4, 2005	17.39	17.59	17.39	17.47
2105	NASDAQ	ARTNA	Fri, Apr 1, 2005	17.37	17.45	17.35	17.43
2104	NASDAQ	ARTNA	Thu, Mar 31, 2005	17.50	17.50	17.37	17.37
2103	NASDAQ	ARTNA	Wed, Mar 30, 2005	17.51	17.58	17.50	17.58
2102	NASDAQ	ARTNA	Tue, Mar 29, 2005	17.41	17.99	17.41	17.47
2101	NASDAQ	ARTNA	Mon, Mar 28, 2005	18.27	18.27	17.37	17.37
2100	NASDAQ	ARTNA	Thu, Mar 24, 2005	17.20	17.95	17.20	17.35
2099	NASDAQ	ARTNA	Wed, Mar 23, 2005	17.67	18.09	17.67	18.09
2098	NASDAQ	ARTNA	Tue, Mar 22, 2005	18.07	18.10	17.83	17.87
2097	NASDAQ	ARTNA	Mon, Mar 21, 2005	18.11	18.11	17.87	18.11
2096	NASDAQ	ARTNA	Fri, Mar 18, 2005	17.35	17.99	17.35	17.87
2095	NASDAQ	ARTNA	Wed, Mar 16, 2005	17.73	17.81	17.35	17.35
2094	NASDAQ	ARTNA	Tue, Mar 15, 2005	18.01	18.13	17.35	17.65
2093	NASDAQ	ARTNA	Mon, Mar 14, 2005	17.50	17.60	17.47	17.51
2092	NASDAQ	ARTNA	Fri, Mar 11, 2005	17.71	17.99	17.34	17.39
2091	NASDAQ	ARTNA	Thu, Mar 10, 2005	17.90	17.95	17.83	17.94
2090	NASDAQ	ARTNA	Wed, Mar 9, 2005	17.92	18.15	17.90	17.90
2089	NASDAQ	ARTNA	Tue, Mar 8, 2005	18.11	18.11	17.91	18.07
2088	NASDAQ	ARTNA	Mon, Mar 7, 2005	17.91	18.13	17.67	17.91
2087	NASDAQ	ARTNA	Fri, Mar 4, 2005	18.17	18.17	17.93	18.15
2086	NASDAQ	ARTNA	Thu, Mar 3, 2005	18.01	18.01	17.91	17.93
2085	NASDAQ	ARTNA	Wed, Mar 2, 2005	17.94	18.09	17.70	17.81
2084	NASDAQ	ARTNA	Tue, Mar 1, 2005	18.00	18.02	18.00	18.02
2083	NASDAQ	ARTNA	Mon, Feb 28, 2005	18.12	18.24	18.11	18.11
2082	NASDAQ	ARTNA	Fri, Feb 25, 2005	18.32	18.32	18.01	18.05
2081	NASDAQ	ARTNA	Thu, Feb 24, 2005	18.30	18.32	18.30	18.32
2080	NASDAQ	ARTNA	Wed, Feb 23, 2005	17.95	18.21	17.95	18.15
2079	NASDAQ	ARTNA	Tue, Feb 22, 2005	18.01	18.32	17.94	17.95
2078	NASDAQ	ARTNA	Fri, Feb 18, 2005	18.26	18.43	18.14	18.20
2077	NASDAQ	ARTNA	Thu, Feb 17, 2005	18.25	18.25	18.08	18.08
2076	NASDAQ	ARTNA	Wed, Feb 16, 2005	18.01	18.22	18.01	18.22
2075	NASDAQ	ARTNA	Tue, Feb 15, 2005	18.29	18.29	18.03	18.15
2074	NASDAQ	ARTNA	Mon, Feb 14, 2005	18.37	18.37	18.03	18.36
2073	NASDAQ	ARTNA	Fri, Feb 11, 2005	18.43	19.05	18.07	18.47
2072	NASDAQ	ARTNA	Thu, Feb 10, 2005	18.16	19.31	18.09	18.42
2071	NASDAQ	ARTNA	Wed, Feb 9, 2005	19.05	19.05	18.99	18.99
2070	NASDAQ	ARTNA	Tue, Feb 8, 2005	19.01	19.05	18.84	19.05
2069	NASDAQ	ARTNA	Mon, Feb 7, 2005	19.00	19.49	19.00	19.35
2068	NASDAQ	ARTNA	Fri, Feb 4, 2005	18.95	19.57	18.95	19.41
2067	NASDAQ	ARTNA	Thu, Feb 3, 2005	18.74	18.94	18.74	18.94
2066	NASDAQ	ARTNA	Wed, Feb 2, 2005	19.19	19.19	18.73	18.74
2065	NASDAQ	ARTNA	Tue, Feb 1, 2005	19.42	19.53	19.36	19.36
2064	NASDAQ	ARTNA	Mon, Jan 31, 2005	19.43	19.43	19.31	19.31
2063	NASDAQ	ARTNA	Fri, Jan 28, 2005	19.37	19.37	19.21	19.21
2062	NASDAQ	ARTNA	Thu, Jan 27, 2005	18.62	19.37	18.62	19.36
2061	NASDAQ	ARTNA	Wed, Jan 26, 2005	18.89	19.31	18.89	19.31
2060	NASDAQ	ARTNA	Tue, Jan 25, 2005	18.53	18.70	18.53	18.53
2059	NASDAQ	ARTNA	Mon, Jan 24, 2005	18.67	18.67	18.65	18.65
2058	NASDAQ	ARTNA	Fri, Jan 21, 2005	18.95	19.49	18.95	19.07
2057	NASDAQ	ARTNA	Thu, Jan 20, 2005	18.68	19.63	18.53	19.63
2056	NASDAQ	ARTNA	Wed, Jan 19, 2005	19.02	19.26	18.79	19.26
2055	NASDAQ	ARTNA	Tue, Jan 18, 2005	18.67	18.97	18.55	18.83
2054	NASDAQ	ARTNA	Fri, Jan 14, 2005	18.75	18.79	18.67	18.79
2053	NASDAQ	ARTNA	Thu, Jan 13, 2005	18.67	18.77	18.67	18.77
2052	NASDAQ	ARTNA	Wed, Jan 12, 2005	18.79	18.79	18.35	18.71
2051	NASDAQ	ARTNA	Tue, Jan 11, 2005	18.33	18.63	18.25	18.25
2050	NASDAQ	ARTNA	Mon, Jan 10, 2005	18.34	18.37	18.20	18.33
2049	NASDAQ	ARTNA	Fri, Jan 7, 2005	18.32	18.34	17.97	18.31
2048	NASDAQ	ARTNA	Thu, Jan 6, 2005	17.83	18.36	17.83	18.11
2047	NASDAQ	ARTNA	Wed, Jan 5, 2005	18.20	18.43	18.00	18.27
2046	NASDAQ	ARTNA	Tue, Jan 4, 2005	18.21	18.21	17.33	17.94
2045	NASDAQ	ARTNA	Mon, Jan 3, 2005	18.49	18.49	18.24	18.27
2044	NASDAQ	ARTNA	Fri, Dec 31, 2004	18.65	18.75	18.65	18.75
2043	NASDAQ	ARTNA	Thu, Dec 30, 2004	18.60	18.64	18.60	18.64
2042	NASDAQ	ARTNA	Wed, Dec 29, 2004	18.43	18.64	18.40	18.56
2041	NASDAQ	ARTNA	Tue, Dec 28, 2004	18.33	18.65	18.33	18.65
2040	NASDAQ	ARTNA	Mon, Dec 27, 2004	18.61	18.65	18.61	18.61
2039	NASDAQ	ARTNA	Thu, Dec 23, 2004	18.56	18.56	18.50	18.50
2038	NASDAQ	ARTNA	Wed, Dec 22, 2004	18.53	18.65	18.52	18.65
2037	NASDAQ	ARTNA	Tue, Dec 21, 2004	19.09	19.10	18.34	18.51
2036	NASDAQ	ARTNA	Mon, Dec 20, 2004	19.41	19.41	19.05	19.24
2035	NASDAQ	ARTNA	Fri, Dec 17, 2004	19.37	19.37	19.11	19.11
2034	NASDAQ	ARTNA	Thu, Dec 16, 2004	19.13	19.19	18.96	19.13
2033	NASDAQ	ARTNA	Wed, Dec 15, 2004	18.91	19.36	18.91	19.36
2032	NASDAQ	ARTNA	Tue, Dec 14, 2004	18.88	19.30	18.88	19.22
2031	NASDAQ	ARTNA	Mon, Dec 13, 2004	19.30	19.30	18.85	18.90
2030	NASDAQ	ARTNA	Fri, Dec 10, 2004	19.23	19.29	18.99	19.05
2029	NASDAQ	ARTNA	Thu, Dec 9, 2004	19.23	19.67	19.23	19.59
2028	NASDAQ	ARTNA	Wed, Dec 8, 2004	19.27	19.33	19.23	19.30
2027	NASDAQ	ARTNA	Tue, Dec 7, 2004	19.59	19.67	19.36	19.46
2026	NASDAQ	ARTNA	Mon, Dec 6, 2004	19.41	19.47	19.33	19.33
2025	NASDAQ	ARTNA	Fri, Dec 3, 2004	19.66	19.66	19.42	19.63
2024	NASDAQ	ARTNA	Thu, Dec 2, 2004	19.21	19.67	19.21	19.67
2023	NASDAQ	ARTNA	Wed, Dec 1, 2004	19.39	19.53	19.22	19.40
2022	NASDAQ	ARTNA	Tue, Nov 30, 2004	19.53	19.53	19.21	19.37
2021	NASDAQ	ARTNA	Mon, Nov 29, 2004	19.67	19.67	19.38	19.56
2020	NASDAQ	ARTNA	Fri, Nov 26, 2004	19.62	19.67	19.47	19.66
2019	NASDAQ	ARTNA	Wed, Nov 24, 2004	19.84	20.04	19.37	19.37
2018	NASDAQ	ARTNA	Tue, Nov 23, 2004	19.95	19.97	19.55	19.84
2017	NASDAQ	ARTNA	Mon, Nov 22, 2004	19.97	19.97	18.87	19.75
2016	NASDAQ	ARTNA	Fri, Nov 19, 2004	19.33	19.47	19.33	19.33
2015	NASDAQ	ARTNA	Thu, Nov 18, 2004	19.29	19.73	18.87	19.33
2014	NASDAQ	ARTNA	Wed, Nov 17, 2004	19.35	19.40	18.95	18.95
2013	NASDAQ	ARTNA	Tue, Nov 16, 2004	19.32	19.32	19.07	19.07
2012	NASDAQ	ARTNA	Mon, Nov 15, 2004	19.20	19.33	19.08	19.32
2011	NASDAQ	ARTNA	Fri, Nov 12, 2004	19.20	19.30	19.02	19.17
2010	NASDAQ	ARTNA	Thu, Nov 11, 2004	19.33	19.33	19.01	19.33
2009	NASDAQ	ARTNA	Wed, Nov 10, 2004	19.03	19.33	19.03	19.20
2008	NASDAQ	ARTNA	Tue, Nov 9, 2004	19.19	19.19	18.71	18.71
2007	NASDAQ	ARTNA	Mon, Nov 8, 2004	17.86	18.77	17.86	18.77
2006	NASDAQ	ARTNA	Fri, Nov 5, 2004	18.87	18.87	18.87	18.87
2005	NASDAQ	ARTNA	Thu, Nov 4, 2004	18.83	18.99	18.67	18.70
2004	NASDAQ	ARTNA	Wed, Nov 3, 2004	18.83	18.83	18.41	18.69
2003	NASDAQ	ARTNA	Tue, Nov 2, 2004	18.41	18.83	18.41	18.83
2002	NASDAQ	ARTNA	Mon, Nov 1, 2004	18.63	18.66	18.47	18.58
2001	NASDAQ	ARTNA	Fri, Oct 29, 2004	18.67	18.67	18.50	18.66
2000	NASDAQ	ARTNA	Thu, Oct 28, 2004	18.67	18.67	18.53	18.53
1999	NASDAQ	ARTNA	Wed, Oct 27, 2004	18.44	18.67	18.44	18.67
1998	NASDAQ	ARTNA	Tue, Oct 26, 2004	18.47	18.47	18.43	18.47
1997	NASDAQ	ARTNA	Mon, Oct 25, 2004	18.34	18.55	18.34	18.47
1996	NASDAQ	ARTNA	Fri, Oct 22, 2004	18.20	18.67	18.04	18.63
1995	NASDAQ	ARTNA	Thu, Oct 21, 2004	18.22	18.29	18.22	18.29
1994	NASDAQ	ARTNA	Wed, Oct 20, 2004	18.47	18.47	18.02	18.35
1993	NASDAQ	ARTNA	Tue, Oct 19, 2004	18.08	18.43	18.08	18.43
1992	NASDAQ	ARTNA	Mon, Oct 18, 2004	17.87	18.00	17.87	18.00
1991	NASDAQ	ARTNA	Fri, Oct 15, 2004	18.00	18.00	17.87	17.99
1990	NASDAQ	ARTNA	Thu, Oct 14, 2004	17.90	17.90	17.90	17.90
1989	NASDAQ	ARTNA	Wed, Oct 13, 2004	18.00	18.00	17.99	17.99
1988	NASDAQ	ARTNA	Tue, Oct 12, 2004	18.13	18.13	17.83	17.90
1987	NASDAQ	ARTNA	Mon, Oct 11, 2004	17.81	18.00	17.69	18.00
1986	NASDAQ	ARTNA	Fri, Oct 8, 2004	17.71	17.72	17.69	17.69
1985	NASDAQ	ARTNA	Thu, Oct 7, 2004	17.69	17.99	17.69	17.83
1984	NASDAQ	ARTNA	Wed, Oct 6, 2004	17.87	17.89	17.85	17.85
1983	NASDAQ	ARTNA	Tue, Oct 5, 2004	17.99	17.99	17.80	17.90
1982	NASDAQ	ARTNA	Mon, Oct 4, 2004	17.99	18.00	17.99	18.00
1981	NASDAQ	ARTNA	Fri, Oct 1, 2004	18.13	18.13	17.89	18.00
1980	NASDAQ	ARTNA	Thu, Sep 30, 2004	17.80	18.12	17.71	18.12
1979	NASDAQ	ARTNA	Wed, Sep 29, 2004	17.93	18.01	17.78	17.98
1978	NASDAQ	ARTNA	Tue, Sep 28, 2004	17.85	18.12	17.85	17.94
1977	NASDAQ	ARTNA	Mon, Sep 27, 2004	17.97	17.98	17.96	17.98
1976	NASDAQ	ARTNA	Fri, Sep 24, 2004	17.63	17.93	17.63	17.67
1975	NASDAQ	ARTNA	Thu, Sep 23, 2004	17.90	17.90	17.50	17.57
1974	NASDAQ	ARTNA	Wed, Sep 22, 2004	17.41	17.41	17.41	17.41
1973	NASDAQ	ARTNA	Tue, Sep 21, 2004	17.57	17.67	17.33	17.48
1972	NASDAQ	ARTNA	Mon, Sep 20, 2004	17.50	17.57	17.41	17.41
1971	NASDAQ	ARTNA	Fri, Sep 17, 2004	17.23	17.67	17.23	17.49
1970	NASDAQ	ARTNA	Thu, Sep 16, 2004	17.15	17.70	16.86	17.22
1969	NASDAQ	ARTNA	Wed, Sep 15, 2004	17.49	17.61	17.13	17.13
1968	NASDAQ	ARTNA	Tue, Sep 14, 2004	17.84	17.93	17.52	17.52
1967	NASDAQ	ARTNA	Mon, Sep 13, 2004	17.93	18.00	17.84	17.85
1966	NASDAQ	ARTNA	Fri, Sep 10, 2004	17.97	17.97	17.96	17.97
1965	NASDAQ	ARTNA	Thu, Sep 9, 2004	18.17	18.17	17.88	17.98
1964	NASDAQ	ARTNA	Wed, Sep 8, 2004	18.41	18.65	18.00	18.54
1963	NASDAQ	ARTNA	Tue, Sep 7, 2004	18.60	18.65	18.33	18.37
1962	NASDAQ	ARTNA	Fri, Sep 3, 2004	18.66	18.66	18.17	18.46
1961	NASDAQ	ARTNA	Thu, Sep 2, 2004	18.33	18.67	18.33	18.67
1960	NASDAQ	ARTNA	Wed, Sep 1, 2004	18.33	18.33	17.93	18.33
1959	NASDAQ	ARTNA	Tue, Aug 31, 2004	17.82	18.46	17.82	18.39
1958	NASDAQ	ARTNA	Mon, Aug 30, 2004	17.91	17.91	17.57	17.84
1957	NASDAQ	ARTNA	Fri, Aug 27, 2004	17.93	17.93	17.89	17.89
1956	NASDAQ	ARTNA	Thu, Aug 26, 2004	17.38	18.04	17.38	17.97
1955	NASDAQ	ARTNA	Wed, Aug 25, 2004	18.12	18.22	17.91	17.96
1954	NASDAQ	ARTNA	Tue, Aug 24, 2004	17.85	18.07	17.73	18.00
1953	NASDAQ	ARTNA	Mon, Aug 23, 2004	17.67	17.95	17.58	17.80
1952	NASDAQ	ARTNA	Fri, Aug 20, 2004	17.30	17.49	17.30	17.49
1951	NASDAQ	ARTNA	Thu, Aug 19, 2004	16.71	17.12	16.71	17.12
1950	NASDAQ	ARTNA	Wed, Aug 18, 2004	16.79	16.79	16.65	16.65
1949	NASDAQ	ARTNA	Tue, Aug 17, 2004	16.87	16.87	16.35	16.73
1948	NASDAQ	ARTNA	Mon, Aug 16, 2004	16.65	16.89	16.37	16.68
1947	NASDAQ	ARTNA	Fri, Aug 13, 2004	16.46	16.64	16.37	16.37
1946	NASDAQ	ARTNA	Thu, Aug 12, 2004	16.57	16.64	16.43	16.64
1945	NASDAQ	ARTNA	Wed, Aug 11, 2004	16.63	16.73	16.45	16.57
1944	NASDAQ	ARTNA	Tue, Aug 10, 2004	16.27	16.66	15.91	16.55
1943	NASDAQ	ARTNA	Mon, Aug 9, 2004	16.61	16.69	16.60	16.61
1942	NASDAQ	ARTNA	Fri, Aug 6, 2004	16.04	16.95	16.04	16.95
1941	NASDAQ	ARTNA	Thu, Aug 5, 2004	15.80	16.35	15.80	16.20
1940	NASDAQ	ARTNA	Wed, Aug 4, 2004	15.69	16.21	15.69	16.13
1939	NASDAQ	ARTNA	Tue, Aug 3, 2004	15.57	16.00	15.35	15.89
1938	NASDAQ	ARTNA	Mon, Aug 2, 2004	16.02	16.25	16.00	16.11
1937	NASDAQ	ARTNA	Fri, Jul 30, 2004	16.69	16.69	16.11	16.27
1936	NASDAQ	ARTNA	Thu, Jul 29, 2004	15.59	16.69	15.59	16.69
1935	NASDAQ	ARTNA	Wed, Jul 28, 2004	15.20	15.51	15.20	15.50
1934	NASDAQ	ARTNA	Tue, Jul 27, 2004	15.33	15.59	15.18	15.19
1933	NASDAQ	ARTNA	Mon, Jul 26, 2004	16.10	16.10	15.33	15.50
1932	NASDAQ	ARTNA	Fri, Jul 23, 2004	16.34	16.34	16.13	16.13
1931	NASDAQ	ARTNA	Thu, Jul 22, 2004	16.60	16.61	16.42	16.42
1930	NASDAQ	ARTNA	Wed, Jul 21, 2004	16.65	16.81	16.62	16.71
1929	NASDAQ	ARTNA	Tue, Jul 20, 2004	16.60	17.85	16.60	16.72
1928	NASDAQ	ARTNA	Mon, Jul 19, 2004	17.05	17.05	16.61	16.71
1927	NASDAQ	ARTNA	Fri, Jul 16, 2004	17.30	17.58	17.13	17.14
1926	NASDAQ	ARTNA	Thu, Jul 15, 2004	17.39	17.39	17.33	17.33
1925	NASDAQ	ARTNA	Wed, Jul 14, 2004	17.35	17.51	17.35	17.50
1924	NASDAQ	ARTNA	Tue, Jul 13, 2004	17.50	17.59	17.36	17.59
1923	NASDAQ	ARTNA	Mon, Jul 12, 2004	17.36	17.60	17.36	17.60
1922	NASDAQ	ARTNA	Fri, Jul 9, 2004	17.65	17.65	17.37	17.37
1921	NASDAQ	ARTNA	Thu, Jul 8, 2004	17.81	17.81	17.45	17.80
1920	NASDAQ	ARTNA	Wed, Jul 7, 2004	17.79	17.81	17.79	17.81
1919	NASDAQ	ARTNA	Tue, Jul 6, 2004	17.76	17.79	17.53	17.53
1918	NASDAQ	ARTNA	Fri, Jul 2, 2004	17.54	17.75	17.54	17.60
1917	NASDAQ	ARTNA	Thu, Jul 1, 2004	17.64	17.81	17.53	17.81
1916	NASDAQ	ARTNA	Wed, Jun 30, 2004	17.85	17.85	17.55	17.63
1915	NASDAQ	ARTNA	Tue, Jun 29, 2004	17.64	17.65	17.64	17.65
1914	NASDAQ	ARTNA	Mon, Jun 28, 2004	17.79	17.79	17.51	17.63
1913	NASDAQ	ARTNA	Fri, Jun 25, 2004	17.52	17.84	17.51	17.53
1912	NASDAQ	ARTNA	Thu, Jun 24, 2004	17.51	17.62	17.51	17.60
1911	NASDAQ	ARTNA	Wed, Jun 23, 2004	17.70	17.70	17.53	17.53
1910	NASDAQ	ARTNA	Tue, Jun 22, 2004	17.83	18.00	17.69	17.70
1909	NASDAQ	ARTNA	Mon, Jun 21, 2004	17.87	17.94	17.83	17.91
1908	NASDAQ	ARTNA	Fri, Jun 18, 2004	17.89	18.11	17.87	17.87
1907	NASDAQ	ARTNA	Thu, Jun 17, 2004	17.87	18.16	17.87	18.06
1906	NASDAQ	ARTNA	Wed, Jun 16, 2004	18.16	18.16	18.16	18.16
1905	NASDAQ	ARTNA	Tue, Jun 15, 2004	17.97	18.29	17.92	17.92
1904	NASDAQ	ARTNA	Mon, Jun 14, 2004	18.53	18.53	17.96	17.96
1903	NASDAQ	ARTNA	Thu, Jun 10, 2004	18.26	18.44	18.24	18.44
1902	NASDAQ	ARTNA	Tue, Jun 8, 2004	18.22	18.37	18.22	18.23
1901	NASDAQ	ARTNA	Mon, Jun 7, 2004	18.20	18.37	18.19	18.37
1900	NASDAQ	ARTNA	Fri, Jun 4, 2004	18.24	18.31	18.01	18.19
1899	NASDAQ	ARTNA	Thu, Jun 3, 2004	18.11	18.29	18.11	18.23
1898	NASDAQ	ARTNA	Wed, Jun 2, 2004	18.30	18.32	18.25	18.25
1897	NASDAQ	ARTNA	Tue, Jun 1, 2004	18.18	18.31	18.13	18.31
1896	NASDAQ	ARTNA	Fri, May 28, 2004	18.13	18.23	18.13	18.19
1895	NASDAQ	ARTNA	Thu, May 27, 2004	18.00	18.17	17.99	18.12
1894	NASDAQ	ARTNA	Wed, May 26, 2004	17.86	17.99	17.86	17.99
1893	NASDAQ	ARTNA	Tue, May 25, 2004	17.51	17.99	17.51	17.99
1892	NASDAQ	ARTNA	Mon, May 24, 2004	17.73	17.73	17.23	17.49
1891	NASDAQ	ARTNA	Fri, May 21, 2004	17.75	17.75	17.56	17.56
1890	NASDAQ	ARTNA	Thu, May 20, 2004	17.75	17.75	17.54	17.70
1889	NASDAQ	ARTNA	Wed, May 19, 2004	17.67	17.67	17.53	17.67
1888	NASDAQ	ARTNA	Tue, May 18, 2004	17.54	17.54	17.54	17.54
1887	NASDAQ	ARTNA	Mon, May 17, 2004	17.34	17.51	17.34	17.51
1886	NASDAQ	ARTNA	Fri, May 14, 2004	17.37	17.60	17.37	17.60
1885	NASDAQ	ARTNA	Thu, May 13, 2004	17.57	17.60	17.19	17.59
1884	NASDAQ	ARTNA	Wed, May 12, 2004	17.50	17.53	17.50	17.53
1883	NASDAQ	ARTNA	Tue, May 11, 2004	17.68	17.69	17.36	17.50
1882	NASDAQ	ARTNA	Mon, May 10, 2004	17.33	17.99	17.33	17.71
1881	NASDAQ	ARTNA	Fri, May 7, 2004	17.33	17.86	17.33	17.82
1880	NASDAQ	ARTNA	Thu, May 6, 2004	17.67	18.00	17.34	17.91
1879	NASDAQ	ARTNA	Wed, May 5, 2004	18.07	18.15	17.89	18.03
1878	NASDAQ	ARTNA	Tue, May 4, 2004	18.39	18.40	17.87	17.87
1877	NASDAQ	ARTNA	Mon, May 3, 2004	18.40	18.40	18.40	18.40
1876	NASDAQ	ARTNA	Fri, Apr 30, 2004	18.17	18.19	18.15	18.15
1875	NASDAQ	ARTNA	Thu, Apr 29, 2004	18.51	18.61	18.11	18.60
1874	NASDAQ	ARTNA	Wed, Apr 28, 2004	18.57	18.57	18.33	18.33
1873	NASDAQ	ARTNA	Tue, Apr 27, 2004	18.11	18.61	18.11	18.61
1872	NASDAQ	ARTNA	Mon, Apr 26, 2004	18.37	18.59	18.20	18.59
1871	NASDAQ	ARTNA	Fri, Apr 23, 2004	18.75	18.75	18.39	18.51
1870	NASDAQ	ARTNA	Thu, Apr 22, 2004	18.77	18.77	18.60	18.60
1869	NASDAQ	ARTNA	Wed, Apr 21, 2004	18.50	18.51	18.46	18.47
1868	NASDAQ	ARTNA	Tue, Apr 20, 2004	18.91	18.92	18.50	18.70
1867	NASDAQ	ARTNA	Mon, Apr 19, 2004	18.67	18.87	18.54	18.87
1866	NASDAQ	ARTNA	Fri, Apr 16, 2004	18.79	18.97	18.63	18.87
1865	NASDAQ	ARTNA	Thu, Apr 15, 2004	19.02	19.02	18.82	18.83
1864	NASDAQ	ARTNA	Wed, Apr 14, 2004	18.80	18.81	18.79	18.79
1863	NASDAQ	ARTNA	Tue, Apr 13, 2004	19.00	19.09	18.81	18.90
1862	NASDAQ	ARTNA	Mon, Apr 12, 2004	19.11	19.11	18.87	18.87
1861	NASDAQ	ARTNA	Thu, Apr 8, 2004	19.11	19.11	18.87	18.87
1860	NASDAQ	ARTNA	Wed, Apr 7, 2004	18.87	18.87	18.87	18.87
1859	NASDAQ	ARTNA	Tue, Apr 6, 2004	18.87	18.87	18.81	18.87
1858	NASDAQ	ARTNA	Mon, Apr 5, 2004	18.94	18.97	18.69	18.97
1857	NASDAQ	ARTNA	Fri, Apr 2, 2004	18.94	18.94	18.69	18.93
1856	NASDAQ	ARTNA	Thu, Apr 1, 2004	18.43	18.97	18.43	18.81
1855	NASDAQ	ARTNA	Wed, Mar 31, 2004	18.63	18.82	18.63	18.82
1854	NASDAQ	ARTNA	Tue, Mar 30, 2004	18.49	18.49	18.37	18.44
1853	NASDAQ	ARTNA	Mon, Mar 29, 2004	18.49	18.49	18.34	18.34
1852	NASDAQ	ARTNA	Fri, Mar 26, 2004	18.63	18.63	18.40	18.41
1851	NASDAQ	ARTNA	Thu, Mar 25, 2004	18.67	18.92	18.63	18.79
1850	NASDAQ	ARTNA	Wed, Mar 24, 2004	18.60	18.76	18.60	18.67
1849	NASDAQ	ARTNA	Tue, Mar 23, 2004	18.61	19.16	18.57	18.77
1848	NASDAQ	ARTNA	Mon, Mar 22, 2004	18.60	18.61	18.35	18.37
1847	NASDAQ	ARTNA	Fri, Mar 19, 2004	18.82	18.82	18.58	18.61
1846	NASDAQ	ARTNA	Thu, Mar 18, 2004	18.66	18.66	18.60	18.60
1845	NASDAQ	ARTNA	Wed, Mar 17, 2004	18.39	18.79	18.33	18.48
1844	NASDAQ	ARTNA	Tue, Mar 16, 2004	18.48	18.48	18.11	18.20
1843	NASDAQ	ARTNA	Mon, Mar 15, 2004	18.55	18.71	18.39	18.71
1842	NASDAQ	ARTNA	Fri, Mar 12, 2004	18.65	18.70	18.27	18.29
1841	NASDAQ	ARTNA	Thu, Mar 11, 2004	18.43	18.54	18.43	18.54
1840	NASDAQ	ARTNA	Wed, Mar 10, 2004	18.53	18.67	18.43	18.47
1839	NASDAQ	ARTNA	Tue, Mar 9, 2004	18.53	18.71	18.53	18.67
1838	NASDAQ	ARTNA	Mon, Mar 8, 2004	18.79	18.79	18.44	18.51
1837	NASDAQ	ARTNA	Fri, Mar 5, 2004	18.57	18.63	18.57	18.62
1836	NASDAQ	ARTNA	Thu, Mar 4, 2004	18.81	18.82	18.33	18.33
1835	NASDAQ	ARTNA	Wed, Mar 3, 2004	18.82	18.82	18.82	18.82
1834	NASDAQ	ARTNA	Tue, Mar 2, 2004	18.79	18.79	18.53	18.69
1833	NASDAQ	ARTNA	Mon, Mar 1, 2004	18.67	18.79	18.66	18.67
1832	NASDAQ	ARTNA	Fri, Feb 27, 2004	18.51	18.80	18.51	18.80
1831	NASDAQ	ARTNA	Thu, Feb 26, 2004	18.81	18.81	18.66	18.81
1830	NASDAQ	ARTNA	Wed, Feb 25, 2004	18.76	18.76	18.73	18.73
1829	NASDAQ	ARTNA	Tue, Feb 24, 2004	18.84	18.84	18.61	18.61
1828	NASDAQ	ARTNA	Mon, Feb 23, 2004	18.82	18.84	18.60	18.67
1827	NASDAQ	ARTNA	Fri, Feb 20, 2004	18.87	18.87	18.54	18.57
1826	NASDAQ	ARTNA	Thu, Feb 19, 2004	18.70	18.79	18.59	18.79
1825	NASDAQ	ARTNA	Wed, Feb 18, 2004	18.83	18.83	18.70	18.70
1824	NASDAQ	ARTNA	Tue, Feb 17, 2004	19.19	19.19	18.73	18.73
1823	NASDAQ	ARTNA	Fri, Feb 13, 2004	18.99	19.15	18.99	19.15
1822	NASDAQ	ARTNA	Wed, Feb 11, 2004	19.17	19.17	18.85	18.87
1821	NASDAQ	ARTNA	Tue, Feb 10, 2004	18.79	19.17	18.60	19.17
1820	NASDAQ	ARTNA	Mon, Feb 9, 2004	18.83	18.96	18.61	18.61
1819	NASDAQ	ARTNA	Fri, Feb 6, 2004	18.69	18.83	18.61	18.83
1818	NASDAQ	ARTNA	Thu, Feb 5, 2004	18.79	18.80	18.50	18.50
1817	NASDAQ	ARTNA	Wed, Feb 4, 2004	18.95	19.19	18.77	19.15
1816	NASDAQ	ARTNA	Tue, Feb 3, 2004	18.83	19.33	18.76	19.08
1815	NASDAQ	ARTNA	Mon, Feb 2, 2004	18.83	18.97	18.76	18.77
1814	NASDAQ	ARTNA	Thu, Jan 29, 2004	18.83	19.03	18.77	19.03
1813	NASDAQ	ARTNA	Wed, Jan 28, 2004	18.91	19.11	18.87	19.11
1812	NASDAQ	ARTNA	Tue, Jan 27, 2004	19.20	19.61	18.94	19.12
1811	NASDAQ	ARTNA	Mon, Jan 26, 2004	19.43	19.69	18.84	19.33
1810	NASDAQ	ARTNA	Fri, Jan 23, 2004	19.43	19.43	19.40	19.40
1809	NASDAQ	ARTNA	Thu, Jan 22, 2004	19.73	19.79	19.37	19.37
1808	NASDAQ	ARTNA	Wed, Jan 21, 2004	19.51	19.80	19.51	19.56
1807	NASDAQ	ARTNA	Tue, Jan 20, 2004	19.47	19.67	19.21	19.67
1806	NASDAQ	ARTNA	Fri, Jan 16, 2004	19.33	19.45	19.33	19.33
1805	NASDAQ	ARTNA	Thu, Jan 15, 2004	19.91	19.91	19.17	19.47
1804	NASDAQ	ARTNA	Wed, Jan 14, 2004	19.25	19.49	19.25	19.33
1803	NASDAQ	ARTNA	Tue, Jan 13, 2004	19.58	20.01	19.18	19.66
1802	NASDAQ	ARTNA	Mon, Jan 12, 2004	19.33	19.93	19.33	19.58
1801	NASDAQ	ARTNA	Fri, Jan 9, 2004	19.15	19.33	19.00	19.33
1800	NASDAQ	ARTNA	Thu, Jan 8, 2004	18.91	19.71	18.91	19.31
1799	NASDAQ	ARTNA	Wed, Jan 7, 2004	19.17	19.21	18.78	19.21
1798	NASDAQ	ARTNA	Tue, Jan 6, 2004	18.07	19.10	18.07	19.00
1797	NASDAQ	ARTNA	Mon, Jan 5, 2004	17.84	18.55	17.71	18.55
1796	NASDAQ	ARTNA	Fri, Jan 2, 2004	18.01	18.60	18.01	18.51
1795	NASDAQ	ARTNA	Wed, Dec 31, 2003	18.67	18.67	18.11	18.57
1794	NASDAQ	ARTNA	Tue, Dec 30, 2003	18.85	18.87	18.17	18.79
1793	NASDAQ	ARTNA	Mon, Dec 29, 2003	18.86	18.86	18.60	18.85
1792	NASDAQ	ARTNA	Fri, Dec 26, 2003	18.65	18.86	18.50	18.60
1791	NASDAQ	ARTNA	Wed, Dec 24, 2003	18.85	18.85	18.85	18.85
1790	NASDAQ	ARTNA	Tue, Dec 23, 2003	18.50	18.85	18.50	18.85
1789	NASDAQ	ARTNA	Mon, Dec 22, 2003	18.74	18.82	18.67	18.67
1788	NASDAQ	ARTNA	Fri, Dec 19, 2003	18.77	19.07	18.75	19.07
1787	NASDAQ	ARTNA	Thu, Dec 18, 2003	19.33	19.33	18.72	18.77
1786	NASDAQ	ARTNA	Wed, Dec 17, 2003	19.00	19.26	18.72	19.00
1785	NASDAQ	ARTNA	Tue, Dec 16, 2003	19.32	19.32	18.85	19.00
1784	NASDAQ	ARTNA	Mon, Dec 15, 2003	19.42	19.42	18.71	19.32
1783	NASDAQ	ARTNA	Fri, Dec 12, 2003	19.11	19.45	19.01	19.01
1782	NASDAQ	ARTNA	Thu, Dec 11, 2003	19.27	19.33	19.11	19.11
1781	NASDAQ	ARTNA	Wed, Dec 10, 2003	19.01	19.47	18.67	19.17
1780	NASDAQ	ARTNA	Tue, Dec 9, 2003	18.03	19.83	18.03	19.55
1779	NASDAQ	ARTNA	Mon, Dec 8, 2003	18.04	18.33	18.04	18.33
1778	NASDAQ	ARTNA	Fri, Dec 5, 2003	17.88	18.16	17.88	18.16
1777	NASDAQ	ARTNA	Thu, Dec 4, 2003	18.05	18.05	17.90	18.00
1776	NASDAQ	ARTNA	Wed, Dec 3, 2003	18.11	18.11	17.85	17.85
1775	NASDAQ	ARTNA	Tue, Dec 2, 2003	17.39	18.13	17.39	18.13
1774	NASDAQ	ARTNA	Mon, Dec 1, 2003	17.99	18.00	17.57	17.83
1773	NASDAQ	ARTNA	Fri, Nov 28, 2003	17.34	18.00	17.34	17.50
1772	NASDAQ	ARTNA	Wed, Nov 26, 2003	17.65	17.99	17.44	17.99
1771	NASDAQ	ARTNA	Tue, Nov 25, 2003	17.43	17.67	17.43	17.59
1770	NASDAQ	ARTNA	Mon, Nov 24, 2003	17.34	17.57	17.24	17.43
1769	NASDAQ	ARTNA	Fri, Nov 21, 2003	17.49	17.49	17.30	17.49
1768	NASDAQ	ARTNA	Thu, Nov 20, 2003	17.43	17.43	17.12	17.19
1767	NASDAQ	ARTNA	Wed, Nov 19, 2003	17.47	17.47	17.19	17.21
1766	NASDAQ	ARTNA	Tue, Nov 18, 2003	17.42	17.46	17.19	17.46
1765	NASDAQ	ARTNA	Mon, Nov 17, 2003	17.83	17.83	17.15	17.33
1764	NASDAQ	ARTNA	Fri, Nov 14, 2003	17.33	17.33	17.12	17.12
1763	NASDAQ	ARTNA	Thu, Nov 13, 2003	16.93	17.32	16.93	17.32
1762	NASDAQ	ARTNA	Wed, Nov 12, 2003	17.49	17.49	17.33	17.49
1761	NASDAQ	ARTNA	Tue, Nov 11, 2003	17.34	17.63	17.34	17.34
1760	NASDAQ	ARTNA	Mon, Nov 10, 2003	17.79	17.79	17.34	17.34
1759	NASDAQ	ARTNA	Fri, Nov 7, 2003	17.50	17.83	17.34	17.36
1758	NASDAQ	ARTNA	Thu, Nov 6, 2003	17.49	17.49	17.49	17.49
1757	NASDAQ	ARTNA	Wed, Nov 5, 2003	17.61	17.67	17.51	17.67
1756	NASDAQ	ARTNA	Tue, Nov 4, 2003	17.89	17.89	17.60	17.60
1755	NASDAQ	ARTNA	Mon, Nov 3, 2003	17.71	17.89	17.49	17.89
1754	NASDAQ	ARTNA	Fri, Oct 31, 2003	17.63	18.00	17.37	17.83
1753	NASDAQ	ARTNA	Thu, Oct 30, 2003	17.65	17.65	17.37	17.63
1752	NASDAQ	ARTNA	Wed, Oct 29, 2003	17.50	17.53	17.50	17.53
1751	NASDAQ	ARTNA	Tue, Oct 28, 2003	17.47	17.52	17.27	17.27
1750	NASDAQ	ARTNA	Mon, Oct 27, 2003	17.41	17.41	17.19	17.21
1749	NASDAQ	ARTNA	Fri, Oct 24, 2003	17.43	17.50	17.30	17.33
1748	NASDAQ	ARTNA	Thu, Oct 23, 2003	17.63	17.66	17.63	17.63
1747	NASDAQ	ARTNA	Wed, Oct 22, 2003	17.60	17.67	17.35	17.35
1746	NASDAQ	ARTNA	Tue, Oct 21, 2003	17.79	17.90	17.53	17.53
1745	NASDAQ	ARTNA	Mon, Oct 20, 2003	17.83	17.83	17.59	17.59
1744	NASDAQ	ARTNA	Fri, Oct 17, 2003	17.83	17.83	17.67	17.67
1743	NASDAQ	ARTNA	Thu, Oct 16, 2003	17.93	17.93	17.64	17.89
1742	NASDAQ	ARTNA	Wed, Oct 15, 2003	17.81	17.83	17.67	17.82
1741	NASDAQ	ARTNA	Tue, Oct 14, 2003	17.57	17.67	17.55	17.67
1740	NASDAQ	ARTNA	Mon, Oct 13, 2003	17.56	17.57	17.35	17.57
1739	NASDAQ	ARTNA	Fri, Oct 10, 2003	17.42	17.57	17.23	17.56
1738	NASDAQ	ARTNA	Thu, Oct 9, 2003	17.60	17.74	17.19	17.34
1737	NASDAQ	ARTNA	Wed, Oct 8, 2003	17.33	17.60	17.33	17.60
1736	NASDAQ	ARTNA	Tue, Oct 7, 2003	17.51	17.60	17.35	17.53
1735	NASDAQ	ARTNA	Mon, Oct 6, 2003	17.47	18.05	17.47	17.60
1734	NASDAQ	ARTNA	Fri, Oct 3, 2003	17.34	18.07	17.34	17.93
1733	NASDAQ	ARTNA	Thu, Oct 2, 2003	17.67	18.00	17.34	17.34
1732	NASDAQ	ARTNA	Wed, Oct 1, 2003	16.99	17.73	16.99	17.73
1731	NASDAQ	ARTNA	Tue, Sep 30, 2003	16.74	17.13	16.74	16.83
1730	NASDAQ	ARTNA	Mon, Sep 29, 2003	16.92	16.92	16.71	16.87
1729	NASDAQ	ARTNA	Fri, Sep 26, 2003	17.05	17.13	16.73	16.73
1728	NASDAQ	ARTNA	Thu, Sep 25, 2003	16.99	17.07	16.66	17.01
1727	NASDAQ	ARTNA	Wed, Sep 24, 2003	17.00	17.00	16.71	16.99
1726	NASDAQ	ARTNA	Tue, Sep 23, 2003	16.58	16.97	16.58	16.97
1725	NASDAQ	ARTNA	Mon, Sep 22, 2003	16.79	16.80	16.42	16.80
1724	NASDAQ	ARTNA	Fri, Sep 19, 2003	16.80	16.80	16.69	16.69
1723	NASDAQ	ARTNA	Thu, Sep 18, 2003	16.55	16.79	16.55	16.79
1722	NASDAQ	ARTNA	Wed, Sep 17, 2003	16.79	16.79	16.46	16.53
1721	NASDAQ	ARTNA	Tue, Sep 16, 2003	16.59	16.80	16.39	16.39
1720	NASDAQ	ARTNA	Mon, Sep 15, 2003	16.63	16.66	16.27	16.49
1719	NASDAQ	ARTNA	Fri, Sep 12, 2003	16.49	16.49	16.49	16.49
1718	NASDAQ	ARTNA	Thu, Sep 11, 2003	16.47	16.67	16.29	16.30
1717	NASDAQ	ARTNA	Wed, Sep 10, 2003	16.15	16.31	16.15	16.31
1716	NASDAQ	ARTNA	Tue, Sep 9, 2003	16.08	16.16	16.08	16.12
1715	NASDAQ	ARTNA	Mon, Sep 8, 2003	16.07	16.08	15.98	15.98
1714	NASDAQ	ARTNA	Fri, Sep 5, 2003	15.93	16.08	15.93	15.97
1713	NASDAQ	ARTNA	Thu, Sep 4, 2003	15.64	15.96	15.59	15.96
1712	NASDAQ	ARTNA	Wed, Sep 3, 2003	16.13	16.14	15.43	15.47
1711	NASDAQ	ARTNA	Tue, Sep 2, 2003	15.65	15.90	15.65	15.88
1710	NASDAQ	ARTNA	Fri, Aug 29, 2003	15.74	15.97	15.64	15.81
1709	NASDAQ	ARTNA	Thu, Aug 28, 2003	15.99	15.99	15.53	15.76
1708	NASDAQ	ARTNA	Wed, Aug 27, 2003	16.09	16.09	15.99	15.99
1707	NASDAQ	ARTNA	Tue, Aug 26, 2003	16.63	16.63	16.00	16.00
1706	NASDAQ	ARTNA	Mon, Aug 25, 2003	16.49	16.65	16.47	16.50
1705	NASDAQ	ARTNA	Fri, Aug 22, 2003	16.65	16.65	16.50	16.63
1704	NASDAQ	ARTNA	Thu, Aug 21, 2003	16.53	16.80	16.47	16.65
1703	NASDAQ	ARTNA	Wed, Aug 20, 2003	16.89	16.89	16.53	16.53
1702	NASDAQ	ARTNA	Tue, Aug 19, 2003	17.00	17.26	16.68	16.98
1701	NASDAQ	ARTNA	Mon, Aug 18, 2003	16.67	16.97	16.67	16.68
1700	NASDAQ	ARTNA	Fri, Aug 15, 2003	16.75	17.13	16.67	16.87
1699	NASDAQ	ARTNA	Thu, Aug 14, 2003	17.16	17.16	16.67	16.77
1698	NASDAQ	ARTNA	Wed, Aug 13, 2003	16.72	16.89	16.67	16.89
1697	NASDAQ	ARTNA	Tue, Aug 12, 2003	16.66	17.21	16.34	16.85
1696	NASDAQ	ARTNA	Mon, Aug 11, 2003	16.55	16.66	16.55	16.66
1695	NASDAQ	ARTNA	Fri, Aug 8, 2003	16.67	16.67	16.20	16.53
1694	NASDAQ	ARTNA	Thu, Aug 7, 2003	16.78	16.90	16.67	16.67
1693	NASDAQ	ARTNA	Wed, Aug 6, 2003	16.83	16.83	16.67	16.67
1692	NASDAQ	ARTNA	Tue, Aug 5, 2003	16.67	16.85	16.60	16.67
1691	NASDAQ	ARTNA	Mon, Aug 4, 2003	16.67	16.67	16.40	16.67
1690	NASDAQ	ARTNA	Fri, Aug 1, 2003	16.85	16.85	16.41	16.53
1689	NASDAQ	ARTNA	Thu, Jul 31, 2003	16.82	16.89	16.34	16.50
1688	NASDAQ	ARTNA	Wed, Jul 30, 2003	16.67	16.90	16.67	16.70
1687	NASDAQ	ARTNA	Tue, Jul 29, 2003	16.67	16.93	16.67	16.67
1686	NASDAQ	ARTNA	Mon, Jul 28, 2003	16.93	17.02	16.67	16.67
1685	NASDAQ	ARTNA	Fri, Jul 25, 2003	17.01	17.01	16.64	16.93
1684	NASDAQ	ARTNA	Thu, Jul 24, 2003	16.49	17.06	16.27	17.03
1683	NASDAQ	ARTNA	Wed, Jul 23, 2003	16.27	17.00	16.20	16.20
1682	NASDAQ	ARTNA	Tue, Jul 22, 2003	16.49	16.49	16.09	16.33
1681	NASDAQ	ARTNA	Mon, Jul 21, 2003	16.27	16.67	16.26	16.39
1680	NASDAQ	ARTNA	Fri, Jul 18, 2003	16.80	16.81	16.33	16.66
1679	NASDAQ	ARTNA	Thu, Jul 17, 2003	16.57	16.57	16.26	16.33
1678	NASDAQ	ARTNA	Wed, Jul 16, 2003	16.76	16.76	16.31	16.70
1677	NASDAQ	ARTNA	Tue, Jul 15, 2003	16.77	16.77	16.27	16.57
1676	NASDAQ	ARTNA	Mon, Jul 14, 2003	16.83	16.83	16.35	16.73
1675	NASDAQ	ARTNA	Fri, Jul 11, 2003	16.00	16.95	15.87	16.50
1674	NASDAQ	ARTNA	Thu, Jul 10, 2003	16.17	16.17	15.33	16.17
1673	NASDAQ	ARTNA	Wed, Jul 9, 2003	16.33	16.49	16.00	16.17
1672	NASDAQ	ARTNA	Tue, Jul 8, 2003	16.62	16.83	16.00	16.65
1671	NASDAQ	ARTNA	Mon, Jul 7, 2003	16.86	16.86	16.00	16.27
1670	NASDAQ	ARTNA	Thu, Jul 3, 2003	16.59	17.33	16.59	16.75
1669	NASDAQ	ARTNA	Wed, Jul 2, 2003	16.33	17.33	16.33	17.24
1668	NASDAQ	ARTNA	Tue, Jul 1, 2003	15.43	16.33	15.00	16.33
1667	NASDAQ	ARTNA	Mon, Jun 30, 2003	15.78	16.22	15.78	16.00
1666	NASDAQ	ARTNA	Fri, Jun 27, 2003	16.11	16.22	15.72	16.22
1665	NASDAQ	ARTNA	Thu, Jun 26, 2003	15.82	16.27	15.71	16.08
1664	NASDAQ	ARTNA	Wed, Jun 25, 2003	15.71	15.80	15.69	15.78
1663	NASDAQ	ARTNA	Tue, Jun 24, 2003	15.81	15.81	15.71	15.78
1662	NASDAQ	ARTNA	Mon, Jun 23, 2003	16.43	16.43	15.67	15.74
1661	NASDAQ	ARTNA	Fri, Jun 20, 2003	16.38	16.45	16.15	16.15
1660	NASDAQ	ARTNA	Thu, Jun 19, 2003	16.23	16.56	16.13	16.45
1659	NASDAQ	ARTNA	Wed, Jun 18, 2003	16.11	16.11	15.85	16.11
1658	NASDAQ	ARTNA	Tue, Jun 17, 2003	16.38	16.38	15.93	16.01
1657	NASDAQ	ARTNA	Mon, Jun 16, 2003	15.89	16.67	15.89	16.38
1656	NASDAQ	ARTNA	Fri, Jun 13, 2003	16.00	16.23	15.88	16.23
1655	NASDAQ	ARTNA	Thu, Jun 12, 2003	15.96	16.10	15.69	15.89
1654	NASDAQ	ARTNA	Wed, Jun 11, 2003	15.56	15.89	15.56	15.89
1653	NASDAQ	ARTNA	Tue, Jun 10, 2003	15.40	15.62	15.33	15.62
1652	NASDAQ	ARTNA	Mon, Jun 9, 2003	15.38	15.38	15.33	15.33
1651	NASDAQ	ARTNA	Fri, Jun 6, 2003	15.11	15.37	15.05	15.31
1650	NASDAQ	ARTNA	Thu, Jun 5, 2003	15.22	15.27	15.01	15.27
1649	NASDAQ	ARTNA	Wed, Jun 4, 2003	15.20	15.25	15.18	15.20
1648	NASDAQ	ARTNA	Tue, Jun 3, 2003	15.73	15.73	15.20	15.20
1647	NASDAQ	ARTNA	Mon, Jun 2, 2003	15.62	15.65	15.53	15.53
1646	NASDAQ	ARTNA	Fri, May 30, 2003	15.56	15.72	15.52	15.57
1645	NASDAQ	ARTNA	Thu, May 29, 2003	15.55	15.56	15.45	15.56
1644	NASDAQ	ARTNA	Wed, May 28, 2003	15.00	15.56	15.00	15.35
1643	NASDAQ	ARTNA	Tue, May 27, 2003	14.81	15.11	14.81	15.00
1642	NASDAQ	ARTNA	Fri, May 23, 2003	14.87	14.87	14.69	14.86
1641	NASDAQ	ARTNA	Thu, May 22, 2003	14.85	14.87	14.68	14.69
1640	NASDAQ	ARTNA	Wed, May 21, 2003	14.67	14.89	14.67	14.85
1639	NASDAQ	ARTNA	Tue, May 20, 2003	14.60	14.67	14.60	14.67
1638	NASDAQ	ARTNA	Mon, May 19, 2003	14.64	14.64	14.57	14.64
1637	NASDAQ	ARTNA	Fri, May 16, 2003	14.82	14.82	14.31	14.49
1636	NASDAQ	ARTNA	Thu, May 15, 2003	14.54	14.67	14.54	14.67
1635	NASDAQ	ARTNA	Wed, May 14, 2003	14.60	14.66	14.34	14.45
1634	NASDAQ	ARTNA	Tue, May 13, 2003	14.61	14.66	14.57	14.66
1633	NASDAQ	ARTNA	Mon, May 12, 2003	14.77	14.77	14.58	14.66
1632	NASDAQ	ARTNA	Fri, May 9, 2003	14.78	14.78	14.58	14.69
1631	NASDAQ	ARTNA	Thu, May 8, 2003	14.76	14.91	14.76	14.91
1630	NASDAQ	ARTNA	Wed, May 7, 2003	15.02	15.02	14.78	14.82
1629	NASDAQ	ARTNA	Tue, May 6, 2003	14.89	15.05	14.89	15.00
1628	NASDAQ	ARTNA	Mon, May 5, 2003	14.72	14.83	14.67	14.83
1627	NASDAQ	ARTNA	Fri, May 2, 2003	14.66	14.72	14.65	14.71
1626	NASDAQ	ARTNA	Thu, May 1, 2003	14.39	14.67	14.39	14.66
1625	NASDAQ	ARTNA	Wed, Apr 30, 2003	14.22	14.39	14.18	14.39
1624	NASDAQ	ARTNA	Tue, Apr 29, 2003	14.22	14.22	14.16	14.22
1623	NASDAQ	ARTNA	Mon, Apr 28, 2003	14.13	14.19	14.11	14.19
1622	NASDAQ	ARTNA	Fri, Apr 25, 2003	14.22	14.22	14.12	14.13
1621	NASDAQ	ARTNA	Thu, Apr 24, 2003	14.17	14.22	14.17	14.22
1620	NASDAQ	ARTNA	Wed, Apr 23, 2003	14.20	14.20	14.07	14.10
1619	NASDAQ	ARTNA	Tue, Apr 22, 2003	14.17	14.22	14.17	14.20
1618	NASDAQ	ARTNA	Mon, Apr 21, 2003	14.17	14.22	14.16	14.16
1617	NASDAQ	ARTNA	Thu, Apr 17, 2003	14.22	14.45	14.17	14.17
1616	NASDAQ	ARTNA	Wed, Apr 16, 2003	13.97	14.22	13.97	14.22
1615	NASDAQ	ARTNA	Tue, Apr 15, 2003	13.89	14.05	13.89	14.05
1614	NASDAQ	ARTNA	Mon, Apr 14, 2003	13.68	14.06	13.68	13.99
1613	NASDAQ	ARTNA	Fri, Apr 11, 2003	13.63	13.68	13.58	13.61
1612	NASDAQ	ARTNA	Thu, Apr 10, 2003	13.55	13.61	13.55	13.55
1611	NASDAQ	ARTNA	Tue, Apr 8, 2003	13.61	13.61	13.53	13.53
1610	NASDAQ	ARTNA	Mon, Apr 7, 2003	13.44	13.62	13.44	13.55
1609	NASDAQ	ARTNA	Fri, Apr 4, 2003	13.40	13.40	13.40	13.40
1608	NASDAQ	ARTNA	Thu, Apr 3, 2003	13.38	13.43	13.29	13.39
1607	NASDAQ	ARTNA	Wed, Apr 2, 2003	13.23	13.38	13.23	13.38
1606	NASDAQ	ARTNA	Tue, Apr 1, 2003	13.31	13.38	13.27	13.27
1605	NASDAQ	ARTNA	Mon, Mar 31, 2003	13.39	13.42	13.33	13.38
1604	NASDAQ	ARTNA	Fri, Mar 28, 2003	13.45	13.51	13.33	13.33
1603	NASDAQ	ARTNA	Thu, Mar 27, 2003	13.45	13.45	13.45	13.45
1602	NASDAQ	ARTNA	Wed, Mar 26, 2003	13.67	13.67	13.38	13.38
1601	NASDAQ	ARTNA	Tue, Mar 25, 2003	13.49	13.76	13.40	13.45
1600	NASDAQ	ARTNA	Mon, Mar 24, 2003	13.79	13.89	13.38	13.38
1599	NASDAQ	ARTNA	Fri, Mar 21, 2003	14.00	14.00	13.73	13.90
1598	NASDAQ	ARTNA	Thu, Mar 20, 2003	14.09	14.22	14.00	14.00
1597	NASDAQ	ARTNA	Wed, Mar 19, 2003	14.22	14.22	14.00	14.00
1596	NASDAQ	ARTNA	Tue, Mar 18, 2003	14.22	14.22	14.18	14.22
1595	NASDAQ	ARTNA	Mon, Mar 17, 2003	14.18	14.32	14.16	14.21
1594	NASDAQ	ARTNA	Fri, Mar 14, 2003	14.23	14.23	14.01	14.21
1593	NASDAQ	ARTNA	Thu, Mar 13, 2003	13.82	14.49	13.73	14.49
1592	NASDAQ	ARTNA	Wed, Mar 12, 2003	14.06	14.07	13.78	13.78
1591	NASDAQ	ARTNA	Tue, Mar 11, 2003	14.17	14.18	14.06	14.11
1590	NASDAQ	ARTNA	Mon, Mar 10, 2003	14.32	14.43	14.16	14.22
1589	NASDAQ	ARTNA	Fri, Mar 7, 2003	14.11	14.15	14.11	14.13
1588	NASDAQ	ARTNA	Thu, Mar 6, 2003	14.01	14.14	13.89	14.00
1587	NASDAQ	ARTNA	Wed, Mar 5, 2003	14.13	14.13	14.04	14.04
1586	NASDAQ	ARTNA	Tue, Mar 4, 2003	13.89	14.22	13.89	14.09
1585	NASDAQ	ARTNA	Mon, Mar 3, 2003	14.14	14.22	14.14	14.22
1584	NASDAQ	ARTNA	Fri, Feb 28, 2003	14.29	14.29	13.89	14.11
1583	NASDAQ	ARTNA	Thu, Feb 27, 2003	14.33	14.33	14.25	14.25
1582	NASDAQ	ARTNA	Wed, Feb 26, 2003	14.09	14.33	14.09	14.33
1581	NASDAQ	ARTNA	Tue, Feb 25, 2003	14.16	14.22	13.94	14.14
1580	NASDAQ	ARTNA	Mon, Feb 24, 2003	14.22	14.23	14.09	14.22
1579	NASDAQ	ARTNA	Fri, Feb 21, 2003	14.00	14.22	14.00	14.22
1578	NASDAQ	ARTNA	Thu, Feb 20, 2003	13.98	14.00	13.91	14.00
1577	NASDAQ	ARTNA	Wed, Feb 19, 2003	13.98	13.98	13.91	13.98
1576	NASDAQ	ARTNA	Tue, Feb 18, 2003	13.93	14.00	13.89	14.00
1575	NASDAQ	ARTNA	Fri, Feb 14, 2003	13.85	13.93	13.78	13.93
1574	NASDAQ	ARTNA	Thu, Feb 13, 2003	14.01	14.01	13.73	13.92
1573	NASDAQ	ARTNA	Wed, Feb 12, 2003	13.83	13.98	13.78	13.98
1572	NASDAQ	ARTNA	Tue, Feb 11, 2003	14.04	14.05	13.83	13.83
1571	NASDAQ	ARTNA	Mon, Feb 10, 2003	14.02	14.02	13.93	14.00
1570	NASDAQ	ARTNA	Fri, Feb 7, 2003	13.72	14.15	13.72	14.00
1569	NASDAQ	ARTNA	Thu, Feb 6, 2003	13.78	13.88	13.70	13.70
1568	NASDAQ	ARTNA	Wed, Feb 5, 2003	13.78	13.87	13.78	13.87
1567	NASDAQ	ARTNA	Tue, Feb 4, 2003	13.66	13.94	13.66	13.94
1566	NASDAQ	ARTNA	Mon, Feb 3, 2003	13.48	13.65	13.48	13.65
1565	NASDAQ	ARTNA	Fri, Jan 31, 2003	13.58	13.67	13.51	13.56
1564	NASDAQ	ARTNA	Thu, Jan 30, 2003	13.69	13.69	13.33	13.47
1563	NASDAQ	ARTNA	Wed, Jan 29, 2003	13.48	13.48	13.32	13.40
1562	NASDAQ	ARTNA	Tue, Jan 28, 2003	13.43	13.43	13.28	13.35
1561	NASDAQ	ARTNA	Mon, Jan 27, 2003	13.72	13.73	13.46	13.46
1560	NASDAQ	ARTNA	Fri, Jan 24, 2003	13.66	13.85	13.66	13.84
1559	NASDAQ	ARTNA	Thu, Jan 23, 2003	13.33	13.56	13.32	13.56
1558	NASDAQ	ARTNA	Wed, Jan 22, 2003	13.60	13.96	13.11	13.45
1557	NASDAQ	ARTNA	Tue, Jan 21, 2003	14.01	14.11	13.73	13.73
1556	NASDAQ	ARTNA	Fri, Jan 17, 2003	13.55	14.00	13.55	13.93
1555	NASDAQ	ARTNA	Thu, Jan 16, 2003	13.43	13.55	13.43	13.55
1554	NASDAQ	ARTNA	Wed, Jan 15, 2003	13.47	13.51	13.35	13.48
1553	NASDAQ	ARTNA	Tue, Jan 14, 2003	13.23	13.55	13.23	13.45
1552	NASDAQ	ARTNA	Mon, Jan 13, 2003	13.08	13.29	13.08	13.29
1551	NASDAQ	ARTNA	Fri, Jan 10, 2003	13.19	13.19	13.16	13.16
1550	NASDAQ	ARTNA	Thu, Jan 9, 2003	13.16	13.18	13.09	13.18
1549	NASDAQ	ARTNA	Wed, Jan 8, 2003	13.21	13.26	13.16	13.16
1548	NASDAQ	ARTNA	Tue, Jan 7, 2003	13.14	13.15	13.11	13.15
1547	NASDAQ	ARTNA	Mon, Jan 6, 2003	13.12	13.27	13.12	13.14
1546	NASDAQ	ARTNA	Fri, Jan 3, 2003	13.33	13.44	13.24	13.27
1545	NASDAQ	ARTNA	Thu, Jan 2, 2003	13.18	13.27	13.18	13.26
1544	NASDAQ	ARTNA	Tue, Dec 31, 2002	13.18	13.18	13.18	13.18
1543	NASDAQ	ARTNA	Mon, Dec 30, 2002	13.10	13.33	13.03	13.12
1542	NASDAQ	ARTNA	Fri, Dec 27, 2002	13.20	13.27	13.08	13.25
1541	NASDAQ	ARTNA	Thu, Dec 26, 2002	13.17	13.17	13.04	13.10
1540	NASDAQ	ARTNA	Tue, Dec 24, 2002	13.16	13.16	13.16	13.16
1539	NASDAQ	ARTNA	Mon, Dec 23, 2002	13.07	13.07	13.07	13.07
1538	NASDAQ	ARTNA	Fri, Dec 20, 2002	13.08	13.17	12.71	13.03
1537	NASDAQ	ARTNA	Thu, Dec 19, 2002	13.11	13.17	13.05	13.17
1536	NASDAQ	ARTNA	Wed, Dec 18, 2002	13.05	13.11	13.05	13.11
1535	NASDAQ	ARTNA	Tue, Dec 17, 2002	13.09	13.11	12.90	12.90
1534	NASDAQ	ARTNA	Mon, Dec 16, 2002	13.01	13.11	12.98	13.00
1533	NASDAQ	ARTNA	Fri, Dec 13, 2002	13.08	13.08	13.08	13.08
1532	NASDAQ	ARTNA	Thu, Dec 12, 2002	12.87	13.06	12.87	13.05
1531	NASDAQ	ARTNA	Wed, Dec 11, 2002	12.84	12.90	12.69	12.90
1530	NASDAQ	ARTNA	Tue, Dec 10, 2002	12.96	12.96	12.45	12.88
1529	NASDAQ	ARTNA	Mon, Dec 9, 2002	12.83	12.95	12.83	12.95
1528	NASDAQ	ARTNA	Fri, Dec 6, 2002	12.81	12.89	12.81	12.89
1527	NASDAQ	ARTNA	Thu, Dec 5, 2002	12.82	13.02	12.82	12.89
1526	NASDAQ	ARTNA	Wed, Dec 4, 2002	12.72	13.00	12.72	12.83
1525	NASDAQ	ARTNA	Tue, Dec 3, 2002	13.00	13.00	13.00	13.00
1524	NASDAQ	ARTNA	Mon, Dec 2, 2002	13.10	13.10	12.69	12.99
1523	NASDAQ	ARTNA	Fri, Nov 29, 2002	13.00	13.01	12.78	12.78
1522	NASDAQ	ARTNA	Wed, Nov 27, 2002	13.05	13.11	12.69	13.11
1521	NASDAQ	ARTNA	Tue, Nov 26, 2002	13.01	13.01	12.93	12.93
1520	NASDAQ	ARTNA	Mon, Nov 25, 2002	13.09	13.25	12.97	13.17
1519	NASDAQ	ARTNA	Fri, Nov 22, 2002	13.29	13.29	12.87	12.99
1518	NASDAQ	ARTNA	Thu, Nov 21, 2002	13.22	13.29	12.82	13.29
1517	NASDAQ	ARTNA	Wed, Nov 20, 2002	12.66	13.24	12.66	12.81
1516	NASDAQ	ARTNA	Tue, Nov 19, 2002	12.89	12.91	12.58	12.67
1515	NASDAQ	ARTNA	Mon, Nov 18, 2002	13.00	13.15	12.67	12.91
1514	NASDAQ	ARTNA	Fri, Nov 15, 2002	12.89	13.00	12.67	12.85
1513	NASDAQ	ARTNA	Thu, Nov 14, 2002	12.50	13.00	12.50	12.99
1512	NASDAQ	ARTNA	Wed, Nov 13, 2002	12.45	12.76	12.45	12.58
1511	NASDAQ	ARTNA	Tue, Nov 12, 2002	12.71	12.71	12.39	12.40
1510	NASDAQ	ARTNA	Mon, Nov 11, 2002	12.67	12.89	12.39	12.40
1509	NASDAQ	ARTNA	Fri, Nov 8, 2002	12.72	12.87	12.57	12.86
1508	NASDAQ	ARTNA	Thu, Nov 7, 2002	12.78	12.86	12.51	12.76
1507	NASDAQ	ARTNA	Wed, Nov 6, 2002	13.29	13.29	12.71	12.84
1506	NASDAQ	ARTNA	Tue, Nov 5, 2002	12.67	13.36	12.49	12.89
1505	NASDAQ	ARTNA	Mon, Nov 4, 2002	12.89	12.89	12.45	12.49
1504	NASDAQ	ARTNA	Fri, Nov 1, 2002	12.37	12.85	12.37	12.85
1503	NASDAQ	ARTNA	Thu, Oct 31, 2002	12.29	12.57	12.01	12.38
1502	NASDAQ	ARTNA	Wed, Oct 30, 2002	12.35	12.35	12.06	12.30
1501	NASDAQ	ARTNA	Tue, Oct 29, 2002	12.35	12.40	12.29	12.35
1500	NASDAQ	ARTNA	Mon, Oct 28, 2002	12.00	12.35	11.89	12.25
1499	NASDAQ	ARTNA	Fri, Oct 25, 2002	12.13	12.16	12.05	12.16
1498	NASDAQ	ARTNA	Thu, Oct 24, 2002	12.42	12.42	12.00	12.40
1497	NASDAQ	ARTNA	Wed, Oct 23, 2002	12.01	12.42	12.01	12.42
1496	NASDAQ	ARTNA	Tue, Oct 22, 2002	12.33	12.51	12.01	12.01
1495	NASDAQ	ARTNA	Mon, Oct 21, 2002	12.51	12.61	12.17	12.17
1494	NASDAQ	ARTNA	Fri, Oct 18, 2002	12.44	12.56	12.20	12.56
1493	NASDAQ	ARTNA	Thu, Oct 17, 2002	12.68	12.68	12.18	12.33
1492	NASDAQ	ARTNA	Wed, Oct 16, 2002	12.45	12.69	12.33	12.68
1491	NASDAQ	ARTNA	Tue, Oct 15, 2002	12.89	12.89	12.45	12.49
1490	NASDAQ	ARTNA	Mon, Oct 14, 2002	12.75	12.75	12.74	12.75
1489	NASDAQ	ARTNA	Fri, Oct 11, 2002	12.69	12.75	12.56	12.56
1488	NASDAQ	ARTNA	Thu, Oct 10, 2002	12.69	12.89	12.69	12.69
1487	NASDAQ	ARTNA	Wed, Oct 9, 2002	12.78	12.89	12.78	12.78
1486	NASDAQ	ARTNA	Tue, Oct 8, 2002	12.81	12.99	12.78	12.80
1485	NASDAQ	ARTNA	Mon, Oct 7, 2002	13.00	13.00	12.89	12.89
1484	NASDAQ	ARTNA	Fri, Oct 4, 2002	13.05	13.05	12.79	12.89
1483	NASDAQ	ARTNA	Thu, Oct 3, 2002	12.89	13.06	12.89	13.05
1482	NASDAQ	ARTNA	Wed, Oct 2, 2002	12.67	12.89	12.67	12.89
1481	NASDAQ	ARTNA	Tue, Oct 1, 2002	12.38	12.89	12.38	12.67
1480	NASDAQ	ARTNA	Mon, Sep 30, 2002	12.45	12.67	12.36	12.61
1479	NASDAQ	ARTNA	Fri, Sep 27, 2002	12.45	12.52	12.45	12.45
1478	NASDAQ	ARTNA	Thu, Sep 26, 2002	12.76	12.78	12.45	12.47
1477	NASDAQ	ARTNA	Wed, Sep 25, 2002	12.64	12.80	12.53	12.53
1476	NASDAQ	ARTNA	Tue, Sep 24, 2002	12.44	12.64	12.40	12.64
1475	NASDAQ	ARTNA	Mon, Sep 23, 2002	12.00	12.43	12.00	12.36
1474	NASDAQ	ARTNA	Fri, Sep 20, 2002	12.33	12.54	12.16	12.54
1473	NASDAQ	ARTNA	Thu, Sep 19, 2002	12.01	12.34	12.00	12.34
1472	NASDAQ	ARTNA	Wed, Sep 18, 2002	12.47	12.67	12.00	12.02
1471	NASDAQ	ARTNA	Tue, Sep 17, 2002	12.21	12.41	12.21	12.41
1470	NASDAQ	ARTNA	Mon, Sep 16, 2002	12.24	12.24	12.11	12.12
1469	NASDAQ	ARTNA	Fri, Sep 13, 2002	12.05	12.22	11.87	12.05
1468	NASDAQ	ARTNA	Thu, Sep 12, 2002	12.15	12.30	11.98	12.21
1467	NASDAQ	ARTNA	Wed, Sep 11, 2002	12.00	12.15	11.96	12.15
1466	NASDAQ	ARTNA	Tue, Sep 10, 2002	12.05	12.27	11.94	11.94
1465	NASDAQ	ARTNA	Mon, Sep 9, 2002	12.30	12.30	11.98	11.98
1464	NASDAQ	ARTNA	Fri, Sep 6, 2002	12.09	12.31	11.98	12.30
1463	NASDAQ	ARTNA	Thu, Sep 5, 2002	12.11	12.32	12.00	12.32
1462	NASDAQ	ARTNA	Wed, Sep 4, 2002	12.33	12.33	12.06	12.33
1461	NASDAQ	ARTNA	Tue, Sep 3, 2002	12.20	12.20	12.05	12.17
1460	NASDAQ	ARTNA	Fri, Aug 30, 2002	12.17	12.36	12.06	12.06
1459	NASDAQ	ARTNA	Thu, Aug 29, 2002	12.56	12.56	12.17	12.17
1458	NASDAQ	ARTNA	Wed, Aug 28, 2002	12.77	12.77	12.58	12.58
1457	NASDAQ	ARTNA	Tue, Aug 27, 2002	12.84	12.87	12.49	12.78
1456	NASDAQ	ARTNA	Mon, Aug 26, 2002	12.46	12.78	12.46	12.66
1455	NASDAQ	ARTNA	Fri, Aug 23, 2002	12.48	12.49	12.23	12.45
1454	NASDAQ	ARTNA	Thu, Aug 22, 2002	12.15	12.19	12.00	12.17
1453	NASDAQ	ARTNA	Wed, Aug 21, 2002	12.31	12.31	12.00	12.00
1452	NASDAQ	ARTNA	Tue, Aug 20, 2002	12.51	12.56	12.21	12.21
1451	NASDAQ	ARTNA	Mon, Aug 19, 2002	12.45	12.49	12.27	12.49
1450	NASDAQ	ARTNA	Fri, Aug 16, 2002	12.62	12.62	12.45	12.45
1449	NASDAQ	ARTNA	Thu, Aug 15, 2002	12.57	12.65	12.56	12.65
1448	NASDAQ	ARTNA	Wed, Aug 14, 2002	12.84	12.84	12.21	12.65
1447	NASDAQ	ARTNA	Tue, Aug 13, 2002	12.82	12.89	12.48	12.74
1446	NASDAQ	ARTNA	Mon, Aug 12, 2002	12.42	12.75	12.42	12.71
1445	NASDAQ	ARTNA	Fri, Aug 9, 2002	12.89	12.89	12.53	12.73
1444	NASDAQ	ARTNA	Thu, Aug 8, 2002	12.45	12.89	12.45	12.89
1443	NASDAQ	ARTNA	Wed, Aug 7, 2002	12.68	12.78	12.45	12.75
1442	NASDAQ	ARTNA	Tue, Aug 6, 2002	12.80	12.89	12.45	12.89
1441	NASDAQ	ARTNA	Mon, Aug 5, 2002	12.92	12.97	12.45	12.80
1440	NASDAQ	ARTNA	Fri, Aug 2, 2002	12.55	12.91	12.33	12.84
1439	NASDAQ	ARTNA	Thu, Aug 1, 2002	11.93	12.55	11.93	12.55
1438	NASDAQ	ARTNA	Wed, Jul 31, 2002	11.89	11.89	11.82	11.82
1437	NASDAQ	ARTNA	Tue, Jul 30, 2002	11.58	11.89	11.58	11.66
1436	NASDAQ	ARTNA	Mon, Jul 29, 2002	11.79	12.00	11.65	11.67
1435	NASDAQ	ARTNA	Fri, Jul 26, 2002	11.55	11.80	11.55	11.78
1434	NASDAQ	ARTNA	Thu, Jul 25, 2002	11.33	11.66	11.29	11.66
1433	NASDAQ	ARTNA	Wed, Jul 24, 2002	11.57	11.66	11.00	11.22
1432	NASDAQ	ARTNA	Tue, Jul 23, 2002	11.22	11.97	11.17	11.56
1431	NASDAQ	ARTNA	Mon, Jul 22, 2002	11.38	11.73	11.17	11.17
1430	NASDAQ	ARTNA	Fri, Jul 19, 2002	12.00	12.00	11.64	11.73
1429	NASDAQ	ARTNA	Thu, Jul 18, 2002	11.96	12.22	11.82	11.82
1428	NASDAQ	ARTNA	Wed, Jul 17, 2002	11.99	12.22	11.99	12.03
1427	NASDAQ	ARTNA	Tue, Jul 16, 2002	12.00	12.20	11.73	11.78
1426	NASDAQ	ARTNA	Mon, Jul 15, 2002	12.34	12.34	11.56	11.67
1425	NASDAQ	ARTNA	Fri, Jul 12, 2002	12.33	12.88	12.27	12.34
1424	NASDAQ	ARTNA	Thu, Jul 11, 2002	12.18	12.89	12.18	12.27
1423	NASDAQ	ARTNA	Wed, Jul 10, 2002	12.78	12.91	12.29	12.29
1422	NASDAQ	ARTNA	Tue, Jul 9, 2002	13.22	13.22	12.78	12.78
1421	NASDAQ	ARTNA	Mon, Jul 8, 2002	12.62	13.22	12.62	13.22
1420	NASDAQ	ARTNA	Fri, Jul 5, 2002	12.62	12.62	12.45	12.45
1419	NASDAQ	ARTNA	Wed, Jul 3, 2002	13.22	13.22	12.62	12.62
1418	NASDAQ	ARTNA	Tue, Jul 2, 2002	13.02	13.02	12.93	13.02
1417	NASDAQ	ARTNA	Mon, Jul 1, 2002	12.89	13.10	12.89	13.10
1416	NASDAQ	ARTNA	Fri, Jun 28, 2002	13.05	13.09	12.56	12.88
1415	NASDAQ	ARTNA	Thu, Jun 27, 2002	12.89	13.01	12.54	12.54
1414	NASDAQ	ARTNA	Wed, Jun 26, 2002	12.78	13.33	12.76	13.25
1413	NASDAQ	ARTNA	Tue, Jun 25, 2002	13.78	13.89	12.85	12.85
1412	NASDAQ	ARTNA	Mon, Jun 24, 2002	13.89	13.91	13.89	13.89
1411	NASDAQ	ARTNA	Fri, Jun 21, 2002	13.89	13.91	13.89	13.91
1410	NASDAQ	ARTNA	Thu, Jun 20, 2002	13.89	13.89	13.89	13.89
1409	NASDAQ	ARTNA	Wed, Jun 19, 2002	13.89	13.93	13.89	13.89
1408	NASDAQ	ARTNA	Tue, Jun 18, 2002	14.05	14.05	13.89	13.91
1407	NASDAQ	ARTNA	Mon, Jun 17, 2002	13.89	14.09	13.78	13.89
1406	NASDAQ	ARTNA	Fri, Jun 14, 2002	14.00	14.00	13.89	14.00
1405	NASDAQ	ARTNA	Thu, Jun 13, 2002	13.89	14.11	13.89	14.00
1404	NASDAQ	ARTNA	Wed, Jun 12, 2002	13.89	14.07	13.89	14.00
1403	NASDAQ	ARTNA	Tue, Jun 11, 2002	13.96	14.09	13.89	14.00
1402	NASDAQ	ARTNA	Mon, Jun 10, 2002	13.93	14.22	13.89	13.96
1401	NASDAQ	ARTNA	Fri, Jun 7, 2002	13.89	14.00	13.89	13.89
1400	NASDAQ	ARTNA	Thu, Jun 6, 2002	14.13	14.13	13.89	13.89
1399	NASDAQ	ARTNA	Wed, Jun 5, 2002	13.98	13.98	13.58	13.89
1398	NASDAQ	ARTNA	Tue, Jun 4, 2002	13.89	14.20	13.89	13.89
1397	NASDAQ	ARTNA	Mon, Jun 3, 2002	13.99	13.99	13.89	13.99
1396	NASDAQ	ARTNA	Fri, May 31, 2002	13.91	14.11	12.91	13.89
1395	NASDAQ	ARTNA	Thu, May 30, 2002	14.25	14.33	14.22	14.22
1394	NASDAQ	ARTNA	Wed, May 29, 2002	14.89	14.89	14.23	14.23
1393	NASDAQ	ARTNA	Tue, May 28, 2002	14.67	14.88	14.66	14.88
1392	NASDAQ	ARTNA	Fri, May 24, 2002	15.33	15.33	14.67	14.67
1391	NASDAQ	ARTNA	Thu, May 23, 2002	15.09	15.09	14.67	14.67
1390	NASDAQ	ARTNA	Wed, May 22, 2002	15.11	15.11	14.67	14.67
1389	NASDAQ	ARTNA	Tue, May 21, 2002	15.11	15.26	14.67	14.68
1388	NASDAQ	ARTNA	Mon, May 20, 2002	15.00	15.11	14.67	15.11
1387	NASDAQ	ARTNA	Fri, May 17, 2002	14.89	15.00	14.36	15.00
1386	NASDAQ	ARTNA	Thu, May 16, 2002	14.89	14.89	14.33	14.67
1385	NASDAQ	ARTNA	Tue, May 14, 2002	15.00	15.00	14.22	15.00
1384	NASDAQ	ARTNA	Mon, May 13, 2002	14.50	14.89	14.22	14.89
1383	NASDAQ	ARTNA	Fri, May 10, 2002	14.58	14.58	14.29	14.55
1382	NASDAQ	ARTNA	Thu, May 9, 2002	14.69	14.89	14.12	14.66
1381	NASDAQ	ARTNA	Wed, May 8, 2002	15.17	15.38	15.02	15.03
1380	NASDAQ	ARTNA	Tue, May 7, 2002	14.80	15.18	14.78	14.78
1379	NASDAQ	ARTNA	Mon, May 6, 2002	14.78	14.89	14.78	14.89
1378	NASDAQ	ARTNA	Fri, May 3, 2002	14.67	14.95	14.22	14.95
1377	NASDAQ	ARTNA	Thu, May 2, 2002	14.11	14.67	14.11	14.67
1376	NASDAQ	ARTNA	Wed, May 1, 2002	14.67	14.67	14.23	14.67
1375	NASDAQ	ARTNA	Tue, Apr 30, 2002	14.45	14.89	14.01	14.89
1374	NASDAQ	ARTNA	Mon, Apr 29, 2002	14.31	14.45	14.18	14.33
1373	NASDAQ	ARTNA	Fri, Apr 26, 2002	14.22	14.22	14.11	14.16
1372	NASDAQ	ARTNA	Thu, Apr 25, 2002	13.69	14.22	13.69	14.22
1371	NASDAQ	ARTNA	Wed, Apr 24, 2002	13.85	13.93	13.78	13.78
1370	NASDAQ	ARTNA	Tue, Apr 23, 2002	13.82	13.87	13.67	13.67
1369	NASDAQ	ARTNA	Mon, Apr 22, 2002	13.87	13.87	13.56	13.60
1368	NASDAQ	ARTNA	Fri, Apr 19, 2002	13.87	13.87	13.87	13.87
1367	NASDAQ	ARTNA	Thu, Apr 18, 2002	13.80	13.87	13.77	13.78
1366	NASDAQ	ARTNA	Wed, Apr 17, 2002	13.78	13.78	13.78	13.78
1365	NASDAQ	ARTNA	Tue, Apr 16, 2002	13.67	13.73	13.49	13.73
1364	NASDAQ	ARTNA	Mon, Apr 15, 2002	13.78	13.82	13.47	13.67
1363	NASDAQ	ARTNA	Fri, Apr 12, 2002	13.78	13.82	13.78	13.78
1362	NASDAQ	ARTNA	Thu, Apr 11, 2002	13.89	13.89	13.89	13.89
1361	NASDAQ	ARTNA	Wed, Apr 10, 2002	13.77	13.78	13.57	13.77
1360	NASDAQ	ARTNA	Tue, Apr 9, 2002	13.75	13.78	13.65	13.65
1359	NASDAQ	ARTNA	Mon, Apr 8, 2002	13.56	13.78	13.56	13.71
1358	NASDAQ	ARTNA	Fri, Apr 5, 2002	13.73	13.73	13.73	13.73
1357	NASDAQ	ARTNA	Thu, Apr 4, 2002	13.51	13.73	13.51	13.73
1356	NASDAQ	ARTNA	Wed, Apr 3, 2002	13.77	13.77	13.45	13.65
1355	NASDAQ	ARTNA	Tue, Apr 2, 2002	13.45	13.45	13.45	13.45
1354	NASDAQ	ARTNA	Mon, Apr 1, 2002	13.77	13.78	13.77	13.77
1353	NASDAQ	ARTNA	Thu, Mar 28, 2002	13.40	13.78	13.40	13.42
1352	NASDAQ	ARTNA	Wed, Mar 27, 2002	13.40	13.41	13.40	13.41
1351	NASDAQ	ARTNA	Tue, Mar 26, 2002	13.73	13.73	13.42	13.56
1350	NASDAQ	ARTNA	Mon, Mar 25, 2002	13.45	13.67	13.37	13.38
1349	NASDAQ	ARTNA	Fri, Mar 22, 2002	13.64	13.67	13.64	13.67
1348	NASDAQ	ARTNA	Thu, Mar 21, 2002	13.33	13.56	13.22	13.56
1347	NASDAQ	ARTNA	Wed, Mar 20, 2002	13.64	13.64	13.64	13.64
1346	NASDAQ	ARTNA	Tue, Mar 19, 2002	13.56	13.56	13.55	13.56
1345	NASDAQ	ARTNA	Mon, Mar 18, 2002	13.25	13.42	13.25	13.37
1344	NASDAQ	ARTNA	Fri, Mar 15, 2002	13.22	13.33	13.05	13.11
1343	NASDAQ	ARTNA	Thu, Mar 14, 2002	13.19	13.22	13.11	13.22
1342	NASDAQ	ARTNA	Wed, Mar 13, 2002	13.25	13.25	13.22	13.25
1341	NASDAQ	ARTNA	Tue, Mar 12, 2002	13.34	13.34	13.25	13.33
1340	NASDAQ	ARTNA	Mon, Mar 11, 2002	13.45	13.78	13.45	13.56
1339	NASDAQ	ARTNA	Fri, Mar 8, 2002	13.54	13.55	13.33	13.33
1338	NASDAQ	ARTNA	Thu, Mar 7, 2002	13.48	13.70	13.47	13.47
1337	NASDAQ	ARTNA	Wed, Mar 6, 2002	13.69	13.69	13.47	13.47
1336	NASDAQ	ARTNA	Tue, Mar 5, 2002	13.36	13.53	13.36	13.53
1335	NASDAQ	ARTNA	Mon, Mar 4, 2002	13.74	13.74	13.45	13.45
1334	NASDAQ	ARTNA	Fri, Mar 1, 2002	13.78	13.78	13.45	13.45
1333	NASDAQ	ARTNA	Thu, Feb 28, 2002	13.37	13.56	13.37	13.56
1332	NASDAQ	ARTNA	Wed, Feb 27, 2002	13.56	13.87	13.56	13.87
1331	NASDAQ	ARTNA	Tue, Feb 26, 2002	13.56	13.66	13.56	13.64
1330	NASDAQ	ARTNA	Mon, Feb 25, 2002	13.78	13.78	13.34	13.34
1329	NASDAQ	ARTNA	Fri, Feb 22, 2002	14.11	14.11	13.33	13.56
1328	NASDAQ	ARTNA	Thu, Feb 21, 2002	14.11	14.11	13.57	13.57
1327	NASDAQ	ARTNA	Wed, Feb 20, 2002	13.78	14.00	13.78	13.78
1326	NASDAQ	ARTNA	Tue, Feb 19, 2002	14.10	14.22	13.36	13.67
1325	NASDAQ	ARTNA	Fri, Feb 15, 2002	13.99	14.00	13.56	14.00
1324	NASDAQ	ARTNA	Thu, Feb 14, 2002	13.77	14.00	13.45	14.00
1323	NASDAQ	ARTNA	Wed, Feb 13, 2002	13.33	13.77	13.33	13.66
1322	NASDAQ	ARTNA	Tue, Feb 12, 2002	13.33	13.77	13.33	13.77
1321	NASDAQ	ARTNA	Mon, Feb 11, 2002	13.56	13.56	13.23	13.56
1320	NASDAQ	ARTNA	Fri, Feb 8, 2002	13.82	14.10	13.56	13.89
1319	NASDAQ	ARTNA	Thu, Feb 7, 2002	13.47	14.00	13.47	14.00
1318	NASDAQ	ARTNA	Wed, Feb 6, 2002	13.33	13.41	13.33	13.41
1317	NASDAQ	ARTNA	Tue, Feb 5, 2002	13.33	13.33	13.22	13.22
1316	NASDAQ	ARTNA	Fri, Feb 1, 2002	13.22	13.33	13.11	13.33
1315	NASDAQ	ARTNA	Thu, Jan 31, 2002	12.89	13.33	12.89	13.12
1314	NASDAQ	ARTNA	Wed, Jan 30, 2002	12.78	13.17	12.71	12.71
1313	NASDAQ	ARTNA	Tue, Jan 29, 2002	13.18	13.18	12.88	12.88
1312	NASDAQ	ARTNA	Mon, Jan 28, 2002	13.14	13.22	13.07	13.07
1311	NASDAQ	ARTNA	Fri, Jan 25, 2002	13.33	13.33	12.90	12.90
1310	NASDAQ	ARTNA	Thu, Jan 24, 2002	13.33	13.33	13.33	13.33
1309	NASDAQ	ARTNA	Wed, Jan 23, 2002	13.11	13.31	13.11	13.31
1308	NASDAQ	ARTNA	Tue, Jan 22, 2002	13.05	13.11	13.05	13.11
1307	NASDAQ	ARTNA	Fri, Jan 18, 2002	13.10	13.11	13.01	13.11
1306	NASDAQ	ARTNA	Thu, Jan 17, 2002	13.13	13.13	13.12	13.12
1305	NASDAQ	ARTNA	Wed, Jan 16, 2002	13.33	13.33	13.33	13.33
1304	NASDAQ	ARTNA	Tue, Jan 15, 2002	13.34	13.34	13.13	13.22
1303	NASDAQ	ARTNA	Mon, Jan 14, 2002	13.75	13.75	13.56	13.56
1302	NASDAQ	ARTNA	Fri, Jan 11, 2002	13.75	13.75	13.33	13.33
1301	NASDAQ	ARTNA	Thu, Jan 10, 2002	13.34	13.56	13.34	13.56
1300	NASDAQ	ARTNA	Wed, Jan 9, 2002	13.33	13.76	13.33	13.33
1299	NASDAQ	ARTNA	Mon, Jan 7, 2002	13.76	13.76	13.33	13.76
1298	NASDAQ	ARTNA	Fri, Jan 4, 2002	13.45	13.45	13.45	13.45
1297	NASDAQ	ARTNA	Thu, Jan 3, 2002	13.78	13.78	13.56	13.76
1296	NASDAQ	ARTNA	Wed, Jan 2, 2002	13.77	13.78	13.56	13.56
1295	NASDAQ	ARTNA	Mon, Dec 31, 2001	13.47	13.75	13.47	13.75
1294	NASDAQ	ARTNA	Fri, Dec 28, 2001	13.33	13.75	13.33	13.75
1293	NASDAQ	ARTNA	Thu, Dec 27, 2001	13.51	13.56	13.49	13.51
1292	NASDAQ	ARTNA	Wed, Dec 26, 2001	13.56	13.56	13.55	13.55
1291	NASDAQ	ARTNA	Mon, Dec 24, 2001	13.12	13.12	12.76	12.76
1290	NASDAQ	ARTNA	Fri, Dec 21, 2001	13.49	13.49	13.33	13.33
1289	NASDAQ	ARTNA	Thu, Dec 20, 2001	13.33	13.33	13.33	13.33
1288	NASDAQ	ARTNA	Wed, Dec 19, 2001	13.33	13.51	12.89	12.90
1287	NASDAQ	ARTNA	Tue, Dec 18, 2001	12.90	13.33	12.90	13.11
1286	NASDAQ	ARTNA	Mon, Dec 17, 2001	12.89	13.33	12.89	13.33
1285	NASDAQ	ARTNA	Fri, Dec 14, 2001	13.11	13.23	13.11	13.23
1284	NASDAQ	ARTNA	Thu, Dec 13, 2001	12.67	13.11	12.67	13.11
1283	NASDAQ	ARTNA	Wed, Dec 12, 2001	12.67	13.11	12.67	12.88
1282	NASDAQ	ARTNA	Tue, Dec 11, 2001	12.73	12.89	12.67	12.67
1281	NASDAQ	ARTNA	Mon, Dec 10, 2001	12.85	12.85	12.67	12.67
1280	NASDAQ	ARTNA	Fri, Dec 7, 2001	12.96	12.99	12.54	12.89
1279	NASDAQ	ARTNA	Thu, Dec 6, 2001	12.89	12.89	12.89	12.89
1278	NASDAQ	ARTNA	Wed, Dec 5, 2001	12.67	12.89	12.62	12.62
1277	NASDAQ	ARTNA	Tue, Dec 4, 2001	12.83	12.83	12.67	12.67
1276	NASDAQ	ARTNA	Mon, Dec 3, 2001	12.67	12.67	12.67	12.67
1275	NASDAQ	ARTNA	Thu, Nov 29, 2001	12.56	12.89	12.56	12.89
1274	NASDAQ	ARTNA	Wed, Nov 28, 2001	12.71	12.71	12.54	12.54
1273	NASDAQ	ARTNA	Tue, Nov 27, 2001	13.11	13.11	12.71	12.71
1272	NASDAQ	ARTNA	Mon, Nov 26, 2001	13.22	13.22	12.89	12.89
1271	NASDAQ	ARTNA	Fri, Nov 23, 2001	13.07	13.07	13.07	13.07
1270	NASDAQ	ARTNA	Wed, Nov 21, 2001	13.45	13.45	13.07	13.07
1269	NASDAQ	ARTNA	Tue, Nov 20, 2001	13.17	13.50	13.11	13.50
1268	NASDAQ	ARTNA	Mon, Nov 19, 2001	13.11	13.11	13.11	13.11
1267	NASDAQ	ARTNA	Fri, Nov 16, 2001	12.96	13.11	12.69	12.69
1266	NASDAQ	ARTNA	Thu, Nov 15, 2001	12.67	13.00	12.56	12.56
1265	NASDAQ	ARTNA	Wed, Nov 14, 2001	12.67	12.68	12.67	12.67
1264	NASDAQ	ARTNA	Tue, Nov 13, 2001	12.67	13.11	12.56	13.11
1263	NASDAQ	ARTNA	Mon, Nov 12, 2001	12.73	12.73	12.67	12.67
1262	NASDAQ	ARTNA	Fri, Nov 9, 2001	12.89	12.89	12.67	12.67
1261	NASDAQ	ARTNA	Thu, Nov 8, 2001	13.03	13.05	12.89	13.05
1260	NASDAQ	ARTNA	Wed, Nov 7, 2001	13.45	13.45	13.11	13.22
1259	NASDAQ	ARTNA	Tue, Nov 6, 2001	13.39	13.39	13.39	13.39
1258	NASDAQ	ARTNA	Mon, Nov 5, 2001	13.31	13.31	13.03	13.03
1257	NASDAQ	ARTNA	Fri, Nov 2, 2001	13.29	13.31	13.12	13.31
1256	NASDAQ	ARTNA	Thu, Nov 1, 2001	13.20	13.20	12.89	12.89
1255	NASDAQ	ARTNA	Wed, Oct 31, 2001	13.31	13.31	12.89	12.89
1254	NASDAQ	ARTNA	Tue, Oct 30, 2001	13.01	13.04	12.98	13.04
1253	NASDAQ	ARTNA	Mon, Oct 29, 2001	13.22	13.45	12.93	13.33
1252	NASDAQ	ARTNA	Fri, Oct 26, 2001	13.11	13.22	12.89	13.11
1251	NASDAQ	ARTNA	Thu, Oct 25, 2001	13.00	13.22	13.00	13.11
1250	NASDAQ	ARTNA	Wed, Oct 24, 2001	13.00	13.11	12.78	12.89
1249	NASDAQ	ARTNA	Tue, Oct 23, 2001	12.78	13.00	12.67	12.93
1248	NASDAQ	ARTNA	Fri, Oct 19, 2001	12.89	12.89	12.67	12.67
1247	NASDAQ	ARTNA	Thu, Oct 18, 2001	12.89	13.00	12.67	12.67
1246	NASDAQ	ARTNA	Wed, Oct 17, 2001	12.89	12.89	12.50	12.67
1245	NASDAQ	ARTNA	Tue, Oct 16, 2001	12.45	12.67	12.45	12.62
1244	NASDAQ	ARTNA	Mon, Oct 15, 2001	12.89	12.89	12.56	12.56
1243	NASDAQ	ARTNA	Fri, Oct 12, 2001	12.94	12.94	12.47	12.47
1242	NASDAQ	ARTNA	Thu, Oct 11, 2001	12.91	12.91	12.73	12.89
1241	NASDAQ	ARTNA	Wed, Oct 10, 2001	12.85	12.89	12.85	12.89
1240	NASDAQ	ARTNA	Tue, Oct 9, 2001	13.00	13.22	12.67	12.89
1239	NASDAQ	ARTNA	Mon, Oct 8, 2001	12.89	12.89	12.56	12.58
1238	NASDAQ	ARTNA	Fri, Oct 5, 2001	12.78	12.89	12.00	12.22
1237	NASDAQ	ARTNA	Thu, Oct 4, 2001	12.78	12.78	12.78	12.78
1236	NASDAQ	ARTNA	Wed, Oct 3, 2001	12.22	12.57	12.22	12.45
1235	NASDAQ	ARTNA	Tue, Oct 2, 2001	11.56	12.11	11.56	12.00
1234	NASDAQ	ARTNA	Mon, Oct 1, 2001	11.68	11.68	11.33	11.67
1233	NASDAQ	ARTNA	Fri, Sep 28, 2001	12.50	12.72	11.63	11.63
1232	NASDAQ	ARTNA	Thu, Sep 27, 2001	12.45	12.45	12.45	12.45
1231	NASDAQ	ARTNA	Wed, Sep 26, 2001	12.00	12.09	12.00	12.01
1230	NASDAQ	ARTNA	Tue, Sep 25, 2001	12.72	12.72	11.93	12.67
1229	NASDAQ	ARTNA	Mon, Sep 24, 2001	12.61	12.67	12.61	12.67
1228	NASDAQ	ARTNA	Fri, Sep 21, 2001	11.56	12.45	11.45	12.45
1227	NASDAQ	ARTNA	Thu, Sep 20, 2001	12.00	12.45	12.00	12.45
1226	NASDAQ	ARTNA	Wed, Sep 19, 2001	12.33	12.50	11.56	11.56
1225	NASDAQ	ARTNA	Tue, Sep 18, 2001	12.22	12.45	12.18	12.33
1224	NASDAQ	ARTNA	Mon, Sep 17, 2001	11.56	12.18	11.11	11.78
1223	NASDAQ	ARTNA	Mon, Sep 10, 2001	11.50	11.58	11.50	11.58
1222	NASDAQ	ARTNA	Fri, Sep 7, 2001	11.56	11.58	11.50	11.58
1221	NASDAQ	ARTNA	Thu, Sep 6, 2001	11.67	11.67	11.67	11.67
1220	NASDAQ	ARTNA	Wed, Sep 5, 2001	11.78	11.78	11.78	11.78
1219	NASDAQ	ARTNA	Tue, Sep 4, 2001	11.78	11.78	11.65	11.65
1218	NASDAQ	ARTNA	Fri, Aug 31, 2001	11.78	11.78	11.78	11.78
1217	NASDAQ	ARTNA	Thu, Aug 30, 2001	11.60	11.79	11.60	11.78
1216	NASDAQ	ARTNA	Tue, Aug 28, 2001	11.78	12.18	11.67	11.67
1215	NASDAQ	ARTNA	Mon, Aug 27, 2001	11.67	11.67	11.67	11.67
1214	NASDAQ	ARTNA	Fri, Aug 24, 2001	11.78	11.78	11.78	11.78
1213	NASDAQ	ARTNA	Wed, Aug 22, 2001	11.78	11.78	11.78	11.78
1212	NASDAQ	ARTNA	Tue, Aug 21, 2001	11.78	11.78	11.76	11.76
1211	NASDAQ	ARTNA	Mon, Aug 20, 2001	11.80	11.80	11.67	11.76
1210	NASDAQ	ARTNA	Fri, Aug 17, 2001	11.54	11.82	11.54	11.82
1209	NASDAQ	ARTNA	Wed, Aug 15, 2001	11.28	11.28	11.28	11.28
1208	NASDAQ	ARTNA	Tue, Aug 14, 2001	11.21	11.21	11.11	11.21
1207	NASDAQ	ARTNA	Mon, Aug 13, 2001	11.11	11.21	11.11	11.21
1206	NASDAQ	ARTNA	Fri, Aug 10, 2001	11.11	11.21	10.91	10.91
1205	NASDAQ	ARTNA	Thu, Aug 9, 2001	11.36	11.36	11.25	11.25
1204	NASDAQ	ARTNA	Wed, Aug 8, 2001	11.43	11.43	11.43	11.43
1203	NASDAQ	ARTNA	Tue, Aug 7, 2001	11.77	12.00	11.56	11.56
1202	NASDAQ	ARTNA	Mon, Aug 6, 2001	11.49	11.49	11.33	11.33
1201	NASDAQ	ARTNA	Fri, Aug 3, 2001	11.76	11.76	11.49	11.49
1200	NASDAQ	ARTNA	Thu, Aug 2, 2001	11.78	11.78	11.56	11.56
1199	NASDAQ	ARTNA	Wed, Aug 1, 2001	11.60	11.60	11.60	11.60
1198	NASDAQ	ARTNA	Mon, Jul 30, 2001	11.61	11.61	11.60	11.60
1197	NASDAQ	ARTNA	Fri, Jul 27, 2001	11.78	12.00	11.61	11.61
1196	NASDAQ	ARTNA	Thu, Jul 26, 2001	11.67	11.82	11.67	11.82
1195	NASDAQ	ARTNA	Wed, Jul 25, 2001	11.38	11.38	11.38	11.38
1194	NASDAQ	ARTNA	Tue, Jul 24, 2001	11.78	11.78	11.38	11.38
1193	NASDAQ	ARTNA	Mon, Jul 23, 2001	11.33	11.78	11.33	11.33
1192	NASDAQ	ARTNA	Fri, Jul 20, 2001	11.33	11.33	11.33	11.33
1191	NASDAQ	ARTNA	Thu, Jul 19, 2001	11.78	11.78	11.33	11.33
1190	NASDAQ	ARTNA	Wed, Jul 18, 2001	11.67	11.67	11.67	11.67
1189	NASDAQ	ARTNA	Tue, Jul 17, 2001	11.78	11.78	11.33	11.33
1188	NASDAQ	ARTNA	Mon, Jul 16, 2001	11.33	11.33	11.33	11.33
1187	NASDAQ	ARTNA	Fri, Jul 13, 2001	11.56	11.67	11.51	11.53
1186	NASDAQ	ARTNA	Thu, Jul 12, 2001	11.51	11.51	11.51	11.51
1185	NASDAQ	ARTNA	Tue, Jul 10, 2001	11.29	11.29	10.89	11.11
1184	NASDAQ	ARTNA	Mon, Jul 9, 2001	11.11	11.33	11.11	11.33
1183	NASDAQ	ARTNA	Fri, Jul 6, 2001	11.33	11.33	10.89	11.11
1182	NASDAQ	ARTNA	Thu, Jul 5, 2001	11.45	11.45	11.45	11.45
1181	NASDAQ	ARTNA	Tue, Jul 3, 2001	11.56	11.56	11.56	11.56
1180	NASDAQ	ARTNA	Mon, Jul 2, 2001	11.89	11.89	11.51	11.51
1179	NASDAQ	ARTNA	Fri, Jun 29, 2001	11.78	11.99	11.78	11.99
1178	NASDAQ	ARTNA	Thu, Jun 28, 2001	11.33	11.67	11.33	11.67
1177	NASDAQ	ARTNA	Wed, Jun 27, 2001	11.35	11.89	11.33	11.89
1176	NASDAQ	ARTNA	Tue, Jun 26, 2001	11.78	11.78	11.35	11.35
1175	NASDAQ	ARTNA	Mon, Jun 25, 2001	11.56	11.98	11.56	11.56
1174	NASDAQ	ARTNA	Fri, Jun 22, 2001	11.36	11.36	11.36	11.36
1173	NASDAQ	ARTNA	Thu, Jun 21, 2001	11.36	11.36	11.36	11.36
1172	NASDAQ	ARTNA	Wed, Jun 20, 2001	11.55	11.56	11.36	11.56
1171	NASDAQ	ARTNA	Tue, Jun 19, 2001	11.38	11.38	11.38	11.38
1170	NASDAQ	ARTNA	Mon, Jun 18, 2001	11.36	11.36	11.36	11.36
1169	NASDAQ	ARTNA	Fri, Jun 15, 2001	11.53	11.53	11.35	11.53
1168	NASDAQ	ARTNA	Thu, Jun 14, 2001	11.56	11.56	11.35	11.35
1167	NASDAQ	ARTNA	Wed, Jun 13, 2001	11.45	11.56	11.45	11.56
1166	NASDAQ	ARTNA	Tue, Jun 12, 2001	11.12	11.45	11.12	11.45
1165	NASDAQ	ARTNA	Mon, Jun 11, 2001	11.33	11.56	11.12	11.56
1164	NASDAQ	ARTNA	Fri, Jun 8, 2001	11.11	11.11	11.11	11.11
1163	NASDAQ	ARTNA	Thu, Jun 7, 2001	10.93	10.93	10.89	10.89
1162	NASDAQ	ARTNA	Wed, Jun 6, 2001	10.89	10.89	10.86	10.86
1161	NASDAQ	ARTNA	Tue, Jun 5, 2001	10.86	10.93	10.86	10.93
1160	NASDAQ	ARTNA	Mon, Jun 4, 2001	10.93	10.93	10.93	10.93
1159	NASDAQ	ARTNA	Fri, Jun 1, 2001	10.85	10.93	10.85	10.93
1158	NASDAQ	ARTNA	Thu, May 31, 2001	10.84	10.93	10.84	10.84
1157	NASDAQ	ARTNA	Wed, May 30, 2001	10.84	10.84	10.84	10.84
1156	NASDAQ	ARTNA	Tue, May 29, 2001	10.80	10.89	10.80	10.84
1155	NASDAQ	ARTNA	Fri, May 25, 2001	10.80	10.80	10.80	10.80
1154	NASDAQ	ARTNA	Thu, May 24, 2001	10.89	11.00	10.80	10.80
1153	NASDAQ	ARTNA	Wed, May 23, 2001	10.93	11.00	10.93	10.98
1152	NASDAQ	ARTNA	Tue, May 22, 2001	10.91	10.91	10.78	10.78
1151	NASDAQ	ARTNA	Mon, May 21, 2001	10.56	10.78	10.56	10.78
1150	NASDAQ	ARTNA	Fri, May 18, 2001	10.67	10.78	10.67	10.78
1149	NASDAQ	ARTNA	Thu, May 17, 2001	10.67	10.78	10.67	10.78
1148	NASDAQ	ARTNA	Wed, May 16, 2001	10.67	10.67	10.44	10.67
1147	NASDAQ	ARTNA	Tue, May 15, 2001	10.88	10.88	10.67	10.67
1146	NASDAQ	ARTNA	Mon, May 14, 2001	10.77	10.86	10.67	10.86
1145	NASDAQ	ARTNA	Thu, May 10, 2001	10.71	10.71	10.67	10.67
1144	NASDAQ	ARTNA	Wed, May 9, 2001	10.47	10.47	10.47	10.47
1143	NASDAQ	ARTNA	Tue, May 8, 2001	10.89	10.89	10.56	10.56
1142	NASDAQ	ARTNA	Mon, May 7, 2001	10.89	11.08	10.67	11.08
1141	NASDAQ	ARTNA	Fri, May 4, 2001	10.78	10.78	10.67	10.67
1140	NASDAQ	ARTNA	Thu, May 3, 2001	10.67	10.71	10.45	10.71
1139	NASDAQ	ARTNA	Wed, May 2, 2001	10.89	10.89	10.65	10.67
1138	NASDAQ	ARTNA	Tue, May 1, 2001	10.67	10.84	10.67	10.67
1137	NASDAQ	ARTNA	Mon, Apr 30, 2001	10.61	10.78	10.56	10.67
1136	NASDAQ	ARTNA	Fri, Apr 27, 2001	10.56	10.67	10.56	10.67
1135	NASDAQ	ARTNA	Thu, Apr 26, 2001	10.72	10.72	10.40	10.67
1134	NASDAQ	ARTNA	Wed, Apr 25, 2001	10.67	10.78	10.67	10.67
1133	NASDAQ	ARTNA	Tue, Apr 24, 2001	10.67	10.67	10.67	10.67
1132	NASDAQ	ARTNA	Mon, Apr 23, 2001	11.11	11.11	10.55	11.11
1131	NASDAQ	ARTNA	Fri, Apr 20, 2001	11.00	11.11	10.88	11.11
1130	NASDAQ	ARTNA	Thu, Apr 19, 2001	11.00	11.11	10.89	11.11
1129	NASDAQ	ARTNA	Wed, Apr 18, 2001	10.84	11.11	10.84	11.11
1128	NASDAQ	ARTNA	Tue, Apr 17, 2001	11.11	11.11	10.89	11.11
1127	NASDAQ	ARTNA	Mon, Apr 16, 2001	11.07	11.07	10.89	10.89
1126	NASDAQ	ARTNA	Thu, Apr 12, 2001	10.89	11.07	10.89	10.89
1125	NASDAQ	ARTNA	Wed, Apr 11, 2001	10.89	11.00	10.89	11.00
1124	NASDAQ	ARTNA	Tue, Apr 10, 2001	10.89	10.89	10.89	10.89
1123	NASDAQ	ARTNA	Mon, Apr 9, 2001	11.11	11.11	11.11	11.11
1122	NASDAQ	ARTNA	Thu, Apr 5, 2001	11.11	11.14	11.11	11.11
1121	NASDAQ	ARTNA	Wed, Apr 4, 2001	11.11	11.11	11.11	11.11
1120	NASDAQ	ARTNA	Tue, Apr 3, 2001	11.61	11.61	11.11	11.11
1119	NASDAQ	ARTNA	Mon, Apr 2, 2001	11.33	11.67	11.17	11.17
1118	NASDAQ	ARTNA	Fri, Mar 30, 2001	11.50	11.56	10.67	11.22
1117	NASDAQ	ARTNA	Thu, Mar 29, 2001	10.67	11.11	10.67	11.11
1116	NASDAQ	ARTNA	Wed, Mar 28, 2001	10.56	11.14	10.33	11.11
1115	NASDAQ	ARTNA	Tue, Mar 27, 2001	10.61	10.61	10.33	10.33
1114	NASDAQ	ARTNA	Mon, Mar 26, 2001	11.06	11.06	11.06	11.06
1113	NASDAQ	ARTNA	Fri, Mar 23, 2001	10.61	10.61	10.33	10.33
1112	NASDAQ	ARTNA	Thu, Mar 22, 2001	10.33	10.44	10.33	10.33
1111	NASDAQ	ARTNA	Wed, Mar 21, 2001	10.61	10.61	10.33	10.61
1110	NASDAQ	ARTNA	Tue, Mar 20, 2001	10.92	10.92	10.22	10.50
1109	NASDAQ	ARTNA	Mon, Mar 19, 2001	11.22	11.22	10.92	10.92
1108	NASDAQ	ARTNA	Fri, Mar 16, 2001	11.22	11.28	11.22	11.28
1107	NASDAQ	ARTNA	Wed, Mar 14, 2001	11.22	11.22	11.22	11.22
1106	NASDAQ	ARTNA	Tue, Mar 13, 2001	11.45	11.45	11.45	11.45
1105	NASDAQ	ARTNA	Mon, Mar 12, 2001	11.22	11.61	11.22	11.50
1104	NASDAQ	ARTNA	Fri, Mar 9, 2001	11.22	11.22	11.22	11.22
1103	NASDAQ	ARTNA	Thu, Mar 8, 2001	11.50	11.61	11.22	11.22
1102	NASDAQ	ARTNA	Wed, Mar 7, 2001	11.20	11.39	11.20	11.39
1101	NASDAQ	ARTNA	Tue, Mar 6, 2001	11.17	11.56	11.17	11.39
1100	NASDAQ	ARTNA	Mon, Mar 5, 2001	11.56	11.56	11.22	11.22
1099	NASDAQ	ARTNA	Thu, Mar 1, 2001	11.11	11.11	11.11	11.11
1098	NASDAQ	ARTNA	Wed, Feb 28, 2001	10.67	10.67	10.67	10.67
1097	NASDAQ	ARTNA	Mon, Feb 26, 2001	10.69	11.11	10.69	11.11
1096	NASDAQ	ARTNA	Fri, Feb 23, 2001	10.75	11.11	10.64	10.67
1095	NASDAQ	ARTNA	Thu, Feb 22, 2001	10.89	11.11	10.89	11.11
1094	NASDAQ	ARTNA	Wed, Feb 21, 2001	10.89	10.89	10.47	10.67
1093	NASDAQ	ARTNA	Tue, Feb 20, 2001	11.11	11.22	10.81	10.81
1092	NASDAQ	ARTNA	Fri, Feb 16, 2001	11.22	11.25	11.11	11.11
1091	NASDAQ	ARTNA	Thu, Feb 15, 2001	11.25	11.53	11.25	11.33
1090	NASDAQ	ARTNA	Wed, Feb 14, 2001	11.17	11.17	10.81	11.17
1089	NASDAQ	ARTNA	Tue, Feb 13, 2001	11.22	11.22	11.06	11.06
1088	NASDAQ	ARTNA	Mon, Feb 12, 2001	11.25	11.33	11.22	11.22
1087	NASDAQ	ARTNA	Fri, Feb 9, 2001	11.22	11.39	11.22	11.28
1086	NASDAQ	ARTNA	Thu, Feb 8, 2001	11.33	11.33	11.22	11.22
1085	NASDAQ	ARTNA	Wed, Feb 7, 2001	11.22	11.22	11.22	11.22
1084	NASDAQ	ARTNA	Tue, Feb 6, 2001	11.22	11.22	11.22	11.22
1083	NASDAQ	ARTNA	Fri, Feb 2, 2001	11.28	11.28	11.28	11.28
1082	NASDAQ	ARTNA	Thu, Feb 1, 2001	11.28	11.28	11.22	11.22
1081	NASDAQ	ARTNA	Wed, Jan 31, 2001	11.22	11.22	11.22	11.22
1080	NASDAQ	ARTNA	Tue, Jan 30, 2001	11.11	11.11	11.11	11.11
1079	NASDAQ	ARTNA	Mon, Jan 29, 2001	11.11	11.45	11.00	11.45
1078	NASDAQ	ARTNA	Thu, Jan 25, 2001	11.22	11.22	11.11	11.11
1077	NASDAQ	ARTNA	Tue, Jan 23, 2001	10.92	11.11	10.44	11.00
1076	NASDAQ	ARTNA	Mon, Jan 22, 2001	11.17	11.22	10.78	10.78
1075	NASDAQ	ARTNA	Fri, Jan 19, 2001	11.33	11.33	11.06	11.06
1074	NASDAQ	ARTNA	Thu, Jan 18, 2001	11.45	11.45	11.11	11.11
1073	NASDAQ	ARTNA	Wed, Jan 17, 2001	11.11	11.11	11.11	11.11
1072	NASDAQ	ARTNA	Tue, Jan 16, 2001	11.33	11.33	11.11	11.11
1071	NASDAQ	ARTNA	Wed, Jan 10, 2001	11.14	11.14	11.14	11.14
1070	NASDAQ	ARTNA	Tue, Jan 9, 2001	11.56	11.56	11.33	11.33
1069	NASDAQ	ARTNA	Mon, Jan 8, 2001	11.11	11.56	11.11	11.56
1068	NASDAQ	ARTNA	Fri, Jan 5, 2001	11.17	11.56	11.11	11.56
1067	NASDAQ	ARTNA	Thu, Jan 4, 2001	11.11	11.45	10.89	11.45
1066	NASDAQ	ARTNA	Wed, Jan 3, 2001	11.78	11.83	11.11	11.11
1065	NASDAQ	ARTNA	Tue, Jan 2, 2001	11.95	12.11	11.89	11.89
1064	NASDAQ	ARTNA	Fri, Dec 29, 2000	11.83	11.95	11.58	11.58
1063	NASDAQ	ARTNA	Thu, Dec 28, 2000	11.56	11.83	11.50	11.50
1062	NASDAQ	ARTNA	Tue, Dec 26, 2000	11.56	11.78	11.56	11.78
1061	NASDAQ	ARTNA	Fri, Dec 22, 2000	11.56	11.56	11.50	11.50
1060	NASDAQ	ARTNA	Thu, Dec 21, 2000	11.33	11.78	11.33	11.56
1059	NASDAQ	ARTNA	Wed, Dec 20, 2000	11.33	11.33	11.33	11.33
1058	NASDAQ	ARTNA	Tue, Dec 19, 2000	11.53	11.56	11.33	11.33
1057	NASDAQ	ARTNA	Mon, Dec 18, 2000	11.39	11.56	11.33	11.33
1056	NASDAQ	ARTNA	Fri, Dec 15, 2000	11.50	11.50	10.94	11.22
1055	NASDAQ	ARTNA	Wed, Dec 13, 2000	11.11	11.56	11.11	11.56
1054	NASDAQ	ARTNA	Tue, Dec 12, 2000	11.00	11.56	11.00	11.56
1053	NASDAQ	ARTNA	Mon, Dec 11, 2000	11.00	11.28	11.00	11.22
1052	NASDAQ	ARTNA	Fri, Dec 8, 2000	10.56	11.61	10.56	11.61
1051	NASDAQ	ARTNA	Wed, Dec 6, 2000	10.44	10.44	10.44	10.44
1050	NASDAQ	ARTNA	Tue, Dec 5, 2000	10.33	10.39	10.19	10.25
1049	NASDAQ	ARTNA	Mon, Dec 4, 2000	10.28	10.33	10.28	10.33
1048	NASDAQ	ARTNA	Fri, Dec 1, 2000	10.22	10.22	9.89	9.89
1047	NASDAQ	ARTNA	Thu, Nov 30, 2000	10.11	10.33	10.03	10.06
1046	NASDAQ	ARTNA	Wed, Nov 29, 2000	9.94	9.94	9.94	9.94
1045	NASDAQ	ARTNA	Tue, Nov 28, 2000	10.11	10.11	9.94	9.94
1044	NASDAQ	ARTNA	Mon, Nov 27, 2000	10.33	10.33	10.11	10.11
1043	NASDAQ	ARTNA	Fri, Nov 24, 2000	9.83	9.83	9.83	9.83
1042	NASDAQ	ARTNA	Wed, Nov 22, 2000	9.94	10.00	9.83	10.00
1041	NASDAQ	ARTNA	Tue, Nov 21, 2000	9.92	10.03	9.92	10.03
1040	NASDAQ	ARTNA	Mon, Nov 20, 2000	9.94	10.11	9.92	10.00
1039	NASDAQ	ARTNA	Fri, Nov 17, 2000	9.97	10.11	9.94	9.94
1038	NASDAQ	ARTNA	Thu, Nov 16, 2000	10.17	10.17	9.92	9.94
1037	NASDAQ	ARTNA	Wed, Nov 15, 2000	10.06	10.11	9.94	9.94
1036	NASDAQ	ARTNA	Tue, Nov 14, 2000	10.00	10.00	9.83	9.83
1035	NASDAQ	ARTNA	Mon, Nov 13, 2000	10.00	10.17	10.00	10.17
1034	NASDAQ	ARTNA	Fri, Nov 10, 2000	9.92	10.00	9.92	10.00
1033	NASDAQ	ARTNA	Thu, Nov 9, 2000	10.03	10.33	9.92	9.92
1032	NASDAQ	ARTNA	Wed, Nov 8, 2000	10.33	10.33	10.33	10.33
1031	NASDAQ	ARTNA	Tue, Nov 7, 2000	10.22	10.22	10.22	10.22
1030	NASDAQ	ARTNA	Mon, Nov 6, 2000	10.00	10.22	9.56	9.67
1029	NASDAQ	ARTNA	Fri, Nov 3, 2000	10.22	10.22	10.22	10.22
1028	NASDAQ	ARTNA	Thu, Nov 2, 2000	10.03	10.03	10.03	10.03
1027	NASDAQ	ARTNA	Wed, Nov 1, 2000	10.03	10.03	10.03	10.03
1026	NASDAQ	ARTNA	Tue, Oct 31, 2000	10.06	10.11	10.00	10.11
1025	NASDAQ	ARTNA	Mon, Oct 30, 2000	10.00	10.11	10.00	10.11
1024	NASDAQ	ARTNA	Fri, Oct 27, 2000	10.03	10.03	10.03	10.03
1023	NASDAQ	ARTNA	Wed, Oct 25, 2000	10.03	10.03	10.03	10.03
1022	NASDAQ	ARTNA	Tue, Oct 24, 2000	10.03	10.03	10.03	10.03
1021	NASDAQ	ARTNA	Fri, Oct 20, 2000	10.00	10.06	10.00	10.06
1020	NASDAQ	ARTNA	Thu, Oct 19, 2000	10.11	10.11	10.11	10.11
1019	NASDAQ	ARTNA	Fri, Oct 13, 2000	10.28	10.28	10.22	10.22
1018	NASDAQ	ARTNA	Thu, Oct 12, 2000	10.22	10.33	10.22	10.22
1017	NASDAQ	ARTNA	Wed, Oct 11, 2000	10.22	10.22	10.22	10.22
1016	NASDAQ	ARTNA	Tue, Oct 10, 2000	10.22	10.22	10.22	10.22
1015	NASDAQ	ARTNA	Fri, Oct 6, 2000	10.44	10.44	10.22	10.33
1014	NASDAQ	ARTNA	Thu, Oct 5, 2000	10.22	10.33	10.22	10.22
1013	NASDAQ	ARTNA	Wed, Oct 4, 2000	10.28	10.28	10.22	10.28
1012	NASDAQ	ARTNA	Tue, Oct 3, 2000	10.28	10.28	10.22	10.22
1011	NASDAQ	ARTNA	Mon, Oct 2, 2000	10.28	10.61	10.25	10.61
1010	NASDAQ	ARTNA	Fri, Sep 29, 2000	10.25	10.39	10.25	10.39
1009	NASDAQ	ARTNA	Thu, Sep 28, 2000	10.28	10.28	10.25	10.25
1008	NASDAQ	ARTNA	Wed, Sep 27, 2000	10.33	10.33	10.28	10.28
1007	NASDAQ	ARTNA	Tue, Sep 26, 2000	10.33	10.33	10.22	10.28
1006	NASDAQ	ARTNA	Mon, Sep 25, 2000	10.39	10.56	10.33	10.33
1005	NASDAQ	ARTNA	Fri, Sep 22, 2000	10.44	10.67	10.39	10.39
1004	NASDAQ	ARTNA	Thu, Sep 21, 2000	10.28	10.28	10.28	10.28
1003	NASDAQ	ARTNA	Wed, Sep 20, 2000	10.28	10.28	10.28	10.28
1002	NASDAQ	ARTNA	Tue, Sep 19, 2000	10.28	10.28	10.28	10.28
1001	NASDAQ	ARTNA	Mon, Sep 18, 2000	10.28	10.44	10.28	10.44
1000	NASDAQ	ARTNA	Fri, Sep 15, 2000	10.33	10.39	10.25	10.28
999	NASDAQ	ARTNA	Thu, Sep 14, 2000	10.25	10.25	10.25	10.25
998	NASDAQ	ARTNA	Wed, Sep 13, 2000	10.28	10.44	10.28	10.28
997	NASDAQ	ARTNA	Tue, Sep 12, 2000	10.25	10.39	10.25	10.39
996	NASDAQ	ARTNA	Mon, Sep 11, 2000	10.06	10.36	10.06	10.25
995	NASDAQ	ARTNA	Fri, Sep 8, 2000	10.00	10.22	10.00	10.22
994	NASDAQ	ARTNA	Thu, Sep 7, 2000	10.17	10.22	10.00	10.00
993	NASDAQ	ARTNA	Tue, Sep 5, 2000	10.17	10.17	10.00	10.06
992	NASDAQ	ARTNA	Fri, Sep 1, 2000	10.17	10.17	10.17	10.17
991	NASDAQ	ARTNA	Thu, Aug 31, 2000	10.22	10.33	10.22	10.33
990	NASDAQ	ARTNA	Wed, Aug 30, 2000	10.22	10.22	10.11	10.11
989	NASDAQ	ARTNA	Tue, Aug 29, 2000	10.22	10.22	10.11	10.22
988	NASDAQ	ARTNA	Mon, Aug 28, 2000	10.33	10.33	10.22	10.22
987	NASDAQ	ARTNA	Fri, Aug 25, 2000	10.22	10.33	10.22	10.22
986	NASDAQ	ARTNA	Thu, Aug 24, 2000	10.33	10.33	10.22	10.33
985	NASDAQ	ARTNA	Wed, Aug 23, 2000	10.33	10.44	10.22	10.22
984	NASDAQ	ARTNA	Tue, Aug 22, 2000	10.33	10.44	10.22	10.22
983	NASDAQ	ARTNA	Mon, Aug 21, 2000	11.33	11.33	10.44	10.44
982	NASDAQ	ARTNA	Fri, Aug 18, 2000	10.44	11.13	10.44	11.11
981	NASDAQ	ARTNA	Thu, Aug 17, 2000	10.44	10.44	10.44	10.44
980	NASDAQ	ARTNA	Wed, Aug 16, 2000	10.56	10.64	10.25	10.44
979	NASDAQ	ARTNA	Tue, Aug 15, 2000	10.44	10.50	10.17	10.50
978	NASDAQ	ARTNA	Mon, Aug 14, 2000	10.67	10.67	10.61	10.61
977	NASDAQ	ARTNA	Fri, Aug 11, 2000	11.11	11.11	10.89	10.89
976	NASDAQ	ARTNA	Thu, Aug 10, 2000	10.78	10.78	10.78	10.78
975	NASDAQ	ARTNA	Wed, Aug 9, 2000	10.39	10.78	10.33	10.33
974	NASDAQ	ARTNA	Tue, Aug 8, 2000	10.19	10.39	10.19	10.39
973	NASDAQ	ARTNA	Mon, Aug 7, 2000	10.22	10.22	10.03	10.06
972	NASDAQ	ARTNA	Fri, Aug 4, 2000	9.89	10.33	9.89	10.22
971	NASDAQ	ARTNA	Thu, Aug 3, 2000	9.94	10.00	9.83	10.00
970	NASDAQ	ARTNA	Wed, Aug 2, 2000	10.22	10.22	10.11	10.11
969	NASDAQ	ARTNA	Tue, Aug 1, 2000	10.11	10.11	10.00	10.11
968	NASDAQ	ARTNA	Mon, Jul 31, 2000	9.78	10.22	9.78	10.11
967	NASDAQ	ARTNA	Fri, Jul 28, 2000	10.03	10.03	9.78	9.78
966	NASDAQ	ARTNA	Thu, Jul 27, 2000	10.00	10.00	9.78	9.78
965	NASDAQ	ARTNA	Wed, Jul 26, 2000	10.00	10.06	10.00	10.06
964	NASDAQ	ARTNA	Tue, Jul 25, 2000	10.11	10.22	10.00	10.00
963	NASDAQ	ARTNA	Mon, Jul 24, 2000	10.00	10.00	9.81	9.81
962	NASDAQ	ARTNA	Fri, Jul 21, 2000	10.11	10.11	9.69	9.89
961	NASDAQ	ARTNA	Thu, Jul 20, 2000	10.03	10.03	9.78	9.78
960	NASDAQ	ARTNA	Wed, Jul 19, 2000	10.00	10.00	10.00	10.00
959	NASDAQ	ARTNA	Tue, Jul 18, 2000	10.11	10.22	10.11	10.22
958	NASDAQ	ARTNA	Mon, Jul 17, 2000	10.00	10.11	9.89	9.94
957	NASDAQ	ARTNA	Fri, Jul 14, 2000	10.06	10.22	10.06	10.22
956	NASDAQ	ARTNA	Thu, Jul 13, 2000	9.89	9.89	9.89	9.89
955	NASDAQ	ARTNA	Wed, Jul 12, 2000	9.78	10.17	9.67	9.78
954	NASDAQ	ARTNA	Tue, Jul 11, 2000	9.78	10.11	9.64	10.11
953	NASDAQ	ARTNA	Mon, Jul 10, 2000	9.89	10.00	9.56	10.00
952	NASDAQ	ARTNA	Fri, Jul 7, 2000	10.00	10.11	9.78	10.11
951	NASDAQ	ARTNA	Thu, Jul 6, 2000	9.83	10.00	9.78	9.86
950	NASDAQ	ARTNA	Wed, Jul 5, 2000	10.00	10.06	10.00	10.06
949	NASDAQ	ARTNA	Mon, Jul 3, 2000	9.83	9.83	9.83	9.83
948	NASDAQ	ARTNA	Fri, Jun 30, 2000	9.78	10.22	9.78	10.22
947	NASDAQ	ARTNA	Thu, Jun 29, 2000	10.28	10.28	9.78	9.78
946	NASDAQ	ARTNA	Wed, Jun 28, 2000	9.78	9.81	9.78	9.81
945	NASDAQ	ARTNA	Tue, Jun 27, 2000	10.28	10.28	9.78	10.00
944	NASDAQ	ARTNA	Mon, Jun 26, 2000	10.33	10.33	10.03	10.03
943	NASDAQ	ARTNA	Fri, Jun 23, 2000	10.28	10.28	10.28	10.28
942	NASDAQ	ARTNA	Thu, Jun 22, 2000	10.22	10.22	10.22	10.22
941	NASDAQ	ARTNA	Wed, Jun 21, 2000	10.22	10.22	10.03	10.06
940	NASDAQ	ARTNA	Tue, Jun 20, 2000	10.22	10.22	10.06	10.06
939	NASDAQ	ARTNA	Mon, Jun 19, 2000	10.22	10.22	10.22	10.22
938	NASDAQ	ARTNA	Fri, Jun 16, 2000	10.22	10.44	10.06	10.06
937	NASDAQ	ARTNA	Thu, Jun 15, 2000	10.56	10.89	10.22	10.22
936	NASDAQ	ARTNA	Wed, Jun 14, 2000	10.56	10.56	10.56	10.56
935	NASDAQ	ARTNA	Tue, Jun 13, 2000	10.67	10.89	10.67	10.67
934	NASDAQ	ARTNA	Mon, Jun 12, 2000	10.67	12.22	10.67	11.11
933	NASDAQ	ARTNA	Fri, Jun 9, 2000	10.67	10.67	10.67	10.67
932	NASDAQ	ARTNA	Thu, Jun 8, 2000	10.56	10.56	10.56	10.56
931	NASDAQ	ARTNA	Wed, Jun 7, 2000	10.56	10.67	10.56	10.67
930	NASDAQ	ARTNA	Tue, Jun 6, 2000	10.44	10.44	10.44	10.44
929	NASDAQ	ARTNA	Mon, Jun 5, 2000	11.11	11.11	10.44	10.44
928	NASDAQ	ARTNA	Fri, Jun 2, 2000	10.67	10.67	10.56	10.56
927	NASDAQ	ARTNA	Thu, Jun 1, 2000	10.33	10.56	10.33	10.39
926	NASDAQ	ARTNA	Wed, May 31, 2000	10.33	10.33	10.28	10.28
925	NASDAQ	ARTNA	Tue, May 30, 2000	10.22	10.22	10.22	10.22
924	NASDAQ	ARTNA	Fri, May 26, 2000	10.56	10.56	10.22	10.22
923	NASDAQ	ARTNA	Thu, May 25, 2000	10.56	10.56	10.44	10.56
922	NASDAQ	ARTNA	Wed, May 24, 2000	10.28	10.56	10.28	10.56
921	NASDAQ	ARTNA	Tue, May 23, 2000	10.17	10.42	10.17	10.42
920	NASDAQ	ARTNA	Mon, May 22, 2000	10.56	10.61	10.28	10.28
919	NASDAQ	ARTNA	Fri, May 19, 2000	10.22	10.28	10.11	10.28
918	NASDAQ	ARTNA	Thu, May 18, 2000	10.67	10.67	10.22	10.22
917	NASDAQ	ARTNA	Tue, May 16, 2000	10.67	10.67	10.67	10.67
916	NASDAQ	ARTNA	Mon, May 15, 2000	10.28	10.28	10.06	10.06
915	NASDAQ	ARTNA	Fri, May 12, 2000	10.22	10.22	10.11	10.11
914	NASDAQ	ARTNA	Thu, May 11, 2000	10.22	10.22	10.11	10.11
913	NASDAQ	ARTNA	Wed, May 10, 2000	10.33	10.33	10.00	10.00
912	NASDAQ	ARTNA	Tue, May 9, 2000	10.33	10.33	9.83	9.83
911	NASDAQ	ARTNA	Mon, May 8, 2000	10.39	10.67	10.33	10.44
910	NASDAQ	ARTNA	Thu, May 4, 2000	10.67	10.67	10.22	10.22
909	NASDAQ	ARTNA	Wed, May 3, 2000	11.00	11.00	11.00	11.00
908	NASDAQ	ARTNA	Tue, May 2, 2000	11.11	11.11	10.89	10.89
907	NASDAQ	ARTNA	Fri, Apr 28, 2000	11.11	11.11	11.11	11.11
906	NASDAQ	ARTNA	Wed, Apr 26, 2000	11.56	11.78	11.22	11.22
905	NASDAQ	ARTNA	Tue, Apr 25, 2000	11.11	11.56	10.44	11.56
904	NASDAQ	ARTNA	Mon, Apr 24, 2000	10.56	11.11	10.00	11.11
903	NASDAQ	ARTNA	Thu, Apr 20, 2000	10.56	10.56	10.56	10.56
902	NASDAQ	ARTNA	Wed, Apr 19, 2000	10.33	10.33	10.22	10.22
901	NASDAQ	ARTNA	Tue, Apr 18, 2000	10.56	10.56	10.33	10.44
900	NASDAQ	ARTNA	Mon, Apr 17, 2000	9.94	10.61	9.94	10.22
899	NASDAQ	ARTNA	Thu, Apr 13, 2000	9.94	11.11	9.94	10.00
898	NASDAQ	ARTNA	Wed, Apr 12, 2000	10.44	10.44	9.78	9.94
897	NASDAQ	ARTNA	Tue, Apr 11, 2000	10.33	10.33	10.33	10.33
896	NASDAQ	ARTNA	Mon, Apr 10, 2000	10.22	10.44	10.22	10.22
895	NASDAQ	ARTNA	Fri, Apr 7, 2000	10.22	10.22	10.22	10.22
894	NASDAQ	ARTNA	Thu, Apr 6, 2000	11.33	11.33	9.89	10.67
893	NASDAQ	ARTNA	Wed, Apr 5, 2000	11.11	11.11	10.44	10.44
892	NASDAQ	ARTNA	Tue, Apr 4, 2000	10.67	11.56	10.67	11.56
891	NASDAQ	ARTNA	Mon, Apr 3, 2000	10.89	10.89	10.11	10.11
890	NASDAQ	ARTNA	Fri, Mar 31, 2000	10.22	10.22	10.22	10.22
889	NASDAQ	ARTNA	Thu, Mar 30, 2000	9.89	9.89	9.89	9.89
888	NASDAQ	ARTNA	Wed, Mar 29, 2000	10.67	10.67	9.78	9.83
887	NASDAQ	ARTNA	Tue, Mar 28, 2000	11.00	11.00	10.22	10.44
886	NASDAQ	ARTNA	Mon, Mar 27, 2000	11.28	11.33	10.78	10.78
885	NASDAQ	ARTNA	Fri, Mar 24, 2000	10.89	10.89	10.78	10.78
884	NASDAQ	ARTNA	Thu, Mar 23, 2000	10.89	11.33	10.89	10.94
883	NASDAQ	ARTNA	Wed, Mar 22, 2000	11.31	11.31	10.97	10.97
882	NASDAQ	ARTNA	Tue, Mar 21, 2000	10.67	11.17	10.61	10.89
881	NASDAQ	ARTNA	Mon, Mar 20, 2000	10.22	10.50	10.22	10.44
880	NASDAQ	ARTNA	Fri, Mar 17, 2000	9.83	10.61	9.83	10.61
879	NASDAQ	ARTNA	Thu, Mar 16, 2000	10.33	10.33	9.39	9.67
878	NASDAQ	ARTNA	Wed, Mar 15, 2000	9.39	10.67	9.33	10.67
877	NASDAQ	ARTNA	Tue, Mar 14, 2000	10.44	10.44	9.33	9.33
876	NASDAQ	ARTNA	Mon, Mar 13, 2000	10.64	10.64	10.17	10.17
875	NASDAQ	ARTNA	Fri, Mar 10, 2000	10.64	10.64	10.61	10.61
874	NASDAQ	ARTNA	Thu, Mar 9, 2000	10.89	10.89	10.67	10.67
873	NASDAQ	ARTNA	Tue, Mar 7, 2000	10.67	10.67	10.67	10.67
872	NASDAQ	ARTNA	Mon, Mar 6, 2000	11.00	11.11	10.67	10.67
871	NASDAQ	ARTNA	Fri, Mar 3, 2000	11.22	11.22	10.78	10.78
870	NASDAQ	ARTNA	Thu, Mar 2, 2000	10.89	10.89	10.89	10.89
869	NASDAQ	ARTNA	Wed, Mar 1, 2000	10.89	10.94	10.67	10.67
868	NASDAQ	ARTNA	Tue, Feb 29, 2000	11.22	11.22	10.89	10.89
867	NASDAQ	ARTNA	Fri, Feb 25, 2000	11.11	11.11	10.89	10.89
866	NASDAQ	ARTNA	Thu, Feb 24, 2000	10.72	10.83	10.72	10.83
865	NASDAQ	ARTNA	Wed, Feb 23, 2000	10.94	11.00	10.94	11.00
864	NASDAQ	ARTNA	Tue, Feb 22, 2000	11.17	11.17	10.83	10.89
863	NASDAQ	ARTNA	Fri, Feb 18, 2000	11.56	12.33	10.89	10.89
862	NASDAQ	ARTNA	Thu, Feb 17, 2000	11.95	12.11	11.56	11.56
861	NASDAQ	ARTNA	Wed, Feb 16, 2000	11.89	11.89	11.89	11.89
860	NASDAQ	ARTNA	Tue, Feb 15, 2000	11.56	11.56	11.56	11.56
859	NASDAQ	ARTNA	Fri, Feb 11, 2000	11.56	12.06	11.56	11.56
858	NASDAQ	ARTNA	Thu, Feb 10, 2000	11.61	12.03	11.56	11.56
857	NASDAQ	ARTNA	Wed, Feb 9, 2000	12.88	12.88	12.88	12.88
856	NASDAQ	ARTNA	Tue, Feb 8, 2000	12.06	12.11	11.61	11.61
855	NASDAQ	ARTNA	Mon, Feb 7, 2000	12.58	12.58	12.00	12.00
854	NASDAQ	ARTNA	Fri, Feb 4, 2000	12.89	12.89	12.58	12.58
853	NASDAQ	ARTNA	Thu, Feb 3, 2000	13.67	13.72	12.89	12.89
852	NASDAQ	ARTNA	Wed, Feb 2, 2000	13.61	13.61	13.39	13.39
851	NASDAQ	ARTNA	Tue, Feb 1, 2000	13.72	13.72	13.72	13.72
850	NASDAQ	ARTNA	Mon, Jan 31, 2000	13.78	13.83	13.72	13.72
849	NASDAQ	ARTNA	Fri, Jan 28, 2000	13.78	13.89	13.78	13.78
848	NASDAQ	ARTNA	Thu, Jan 27, 2000	13.89	13.89	13.67	13.67
847	NASDAQ	ARTNA	Wed, Jan 26, 2000	13.72	14.06	13.72	14.00
846	NASDAQ	ARTNA	Tue, Jan 25, 2000	13.89	14.00	13.61	13.78
845	NASDAQ	ARTNA	Mon, Jan 24, 2000	13.61	13.95	13.61	13.95
844	NASDAQ	ARTNA	Fri, Jan 21, 2000	13.67	13.67	13.61	13.61
843	NASDAQ	ARTNA	Wed, Jan 19, 2000	13.78	13.78	13.67	13.67
842	NASDAQ	ARTNA	Tue, Jan 18, 2000	13.99	13.99	13.70	13.70
841	NASDAQ	ARTNA	Fri, Jan 14, 2000	13.74	13.78	13.70	13.72
840	NASDAQ	ARTNA	Thu, Jan 13, 2000	13.72	13.72	13.70	13.70
839	NASDAQ	ARTNA	Wed, Jan 12, 2000	13.71	13.78	13.67	13.72
838	NASDAQ	ARTNA	Tue, Jan 11, 2000	13.67	13.78	13.56	13.56
837	NASDAQ	ARTNA	Mon, Jan 10, 2000	13.56	13.61	13.56	13.56
836	NASDAQ	ARTNA	Fri, Jan 7, 2000	13.56	14.00	13.56	13.56
835	NASDAQ	ARTNA	Thu, Jan 6, 2000	13.56	13.67	13.56	13.56
834	NASDAQ	ARTNA	Wed, Jan 5, 2000	13.56	13.61	13.56	13.56
833	NASDAQ	ARTNA	Tue, Jan 4, 2000	13.56	13.67	13.56	13.56
832	NASDAQ	ARTNA	Mon, Jan 3, 2000	13.61	13.72	13.22	13.22
831	NASDAQ	ARTNA	Fri, Dec 31, 1999	13.56	14.00	13.56	14.00
830	NASDAQ	ARTNA	Thu, Dec 30, 1999	13.56	14.11	13.56	14.11
829	NASDAQ	ARTNA	Tue, Dec 28, 1999	13.31	13.67	13.28	13.33
828	NASDAQ	ARTNA	Mon, Dec 27, 1999	13.17	13.33	13.17	13.33
827	NASDAQ	ARTNA	Thu, Dec 23, 1999	13.06	13.11	13.06	13.11
826	NASDAQ	ARTNA	Wed, Dec 22, 1999	12.78	13.00	12.78	13.00
825	NASDAQ	ARTNA	Tue, Dec 21, 1999	12.50	12.78	12.50	12.67
824	NASDAQ	ARTNA	Mon, Dec 20, 1999	12.67	12.78	12.45	12.78
823	NASDAQ	ARTNA	Fri, Dec 17, 1999	12.45	12.67	12.06	12.39
822	NASDAQ	ARTNA	Thu, Dec 16, 1999	12.50	12.61	12.00	12.00
821	NASDAQ	ARTNA	Wed, Dec 15, 1999	12.89	12.89	12.00	12.00
820	NASDAQ	ARTNA	Tue, Dec 14, 1999	12.06	12.67	12.06	12.45
819	NASDAQ	ARTNA	Mon, Dec 13, 1999	11.95	12.45	11.95	12.45
818	NASDAQ	ARTNA	Fri, Dec 10, 1999	11.95	12.00	11.78	12.00
817	NASDAQ	ARTNA	Thu, Dec 9, 1999	11.78	11.95	11.45	11.95
816	NASDAQ	ARTNA	Wed, Dec 8, 1999	11.45	11.45	11.45	11.45
815	NASDAQ	ARTNA	Tue, Dec 7, 1999	11.56	11.67	11.56	11.67
814	NASDAQ	ARTNA	Mon, Dec 6, 1999	11.50	11.56	11.39	11.56
813	NASDAQ	ARTNA	Fri, Dec 3, 1999	11.70	11.70	11.50	11.56
812	NASDAQ	ARTNA	Thu, Dec 2, 1999	11.67	11.67	11.56	11.56
811	NASDAQ	ARTNA	Wed, Dec 1, 1999	11.67	12.00	11.56	11.67
810	NASDAQ	ARTNA	Tue, Nov 30, 1999	11.70	11.83	11.56	11.56
809	NASDAQ	ARTNA	Mon, Nov 29, 1999	11.56	11.72	11.56	11.61
808	NASDAQ	ARTNA	Fri, Nov 26, 1999	11.72	11.83	11.72	11.78
807	NASDAQ	ARTNA	Wed, Nov 24, 1999	11.22	11.67	11.22	11.67
806	NASDAQ	ARTNA	Tue, Nov 23, 1999	11.22	11.22	11.00	11.22
805	NASDAQ	ARTNA	Mon, Nov 22, 1999	11.33	11.33	11.11	11.11
804	NASDAQ	ARTNA	Fri, Nov 19, 1999	11.06	11.22	11.06	11.22
803	NASDAQ	ARTNA	Thu, Nov 18, 1999	11.08	11.17	11.06	11.17
802	NASDAQ	ARTNA	Wed, Nov 17, 1999	11.11	11.11	11.08	11.11
801	NASDAQ	ARTNA	Tue, Nov 16, 1999	11.22	11.22	11.06	11.06
800	NASDAQ	ARTNA	Mon, Nov 15, 1999	11.11	11.17	11.06	11.06
799	NASDAQ	ARTNA	Fri, Nov 12, 1999	11.22	11.22	11.17	11.17
798	NASDAQ	ARTNA	Thu, Nov 11, 1999	11.22	11.22	11.06	11.22
797	NASDAQ	ARTNA	Wed, Nov 10, 1999	11.22	11.22	11.06	11.22
796	NASDAQ	ARTNA	Tue, Nov 9, 1999	11.22	11.22	11.11	11.22
795	NASDAQ	ARTNA	Mon, Nov 8, 1999	11.33	11.33	11.00	11.22
794	NASDAQ	ARTNA	Fri, Nov 5, 1999	11.28	11.33	11.11	11.33
793	NASDAQ	ARTNA	Thu, Nov 4, 1999	11.11	11.22	11.11	11.17
792	NASDAQ	ARTNA	Wed, Nov 3, 1999	11.17	11.33	11.00	11.33
791	NASDAQ	ARTNA	Tue, Nov 2, 1999	10.89	11.00	10.78	11.00
790	NASDAQ	ARTNA	Mon, Nov 1, 1999	11.06	11.06	10.78	10.78
789	NASDAQ	ARTNA	Fri, Oct 29, 1999	10.89	11.00	10.89	11.00
788	NASDAQ	ARTNA	Thu, Oct 28, 1999	10.78	11.00	10.78	11.00
787	NASDAQ	ARTNA	Wed, Oct 27, 1999	10.72	10.72	10.56	10.72
786	NASDAQ	ARTNA	Tue, Oct 26, 1999	10.44	10.72	10.44	10.50
785	NASDAQ	ARTNA	Mon, Oct 25, 1999	10.44	10.61	10.28	10.33
784	NASDAQ	ARTNA	Fri, Oct 22, 1999	10.06	10.06	10.06	10.06
783	NASDAQ	ARTNA	Thu, Oct 21, 1999	10.22	10.44	10.06	10.22
782	NASDAQ	ARTNA	Tue, Oct 19, 1999	10.00	10.44	10.00	10.00
781	NASDAQ	ARTNA	Mon, Oct 18, 1999	10.28	10.44	10.00	10.00
780	NASDAQ	ARTNA	Fri, Oct 15, 1999	10.61	10.61	10.22	10.44
779	NASDAQ	ARTNA	Thu, Oct 14, 1999	10.61	10.67	10.61	10.67
778	NASDAQ	ARTNA	Wed, Oct 13, 1999	10.56	10.72	10.44	10.61
777	NASDAQ	ARTNA	Tue, Oct 12, 1999	10.56	10.56	10.56	10.56
776	NASDAQ	ARTNA	Mon, Oct 11, 1999	10.78	10.78	10.50	10.61
775	NASDAQ	ARTNA	Fri, Oct 8, 1999	10.67	10.67	10.67	10.67
774	NASDAQ	ARTNA	Thu, Oct 7, 1999	10.67	10.78	10.67	10.72
773	NASDAQ	ARTNA	Wed, Oct 6, 1999	10.78	11.11	10.67	10.67
772	NASDAQ	ARTNA	Tue, Oct 5, 1999	11.11	11.11	10.89	10.89
771	NASDAQ	ARTNA	Mon, Oct 4, 1999	10.89	10.89	10.89	10.89
770	NASDAQ	ARTNA	Fri, Oct 1, 1999	10.89	10.89	10.89	10.89
769	NASDAQ	ARTNA	Thu, Sep 30, 1999	11.11	11.11	11.11	11.11
768	NASDAQ	ARTNA	Wed, Sep 29, 1999	10.89	10.89	10.89	10.89
767	NASDAQ	ARTNA	Tue, Sep 28, 1999	11.00	11.03	10.89	10.89
766	NASDAQ	ARTNA	Mon, Sep 27, 1999	10.89	11.00	10.89	11.00
765	NASDAQ	ARTNA	Fri, Sep 24, 1999	10.94	11.11	10.94	11.11
764	NASDAQ	ARTNA	Thu, Sep 23, 1999	11.11	11.11	11.11	11.11
763	NASDAQ	ARTNA	Wed, Sep 22, 1999	11.11	11.11	11.11	11.11
762	NASDAQ	ARTNA	Tue, Sep 21, 1999	11.00	11.17	10.89	10.89
761	NASDAQ	ARTNA	Mon, Sep 20, 1999	11.06	11.17	11.00	11.00
760	NASDAQ	ARTNA	Fri, Sep 17, 1999	11.11	11.11	11.11	11.11
759	NASDAQ	ARTNA	Thu, Sep 16, 1999	11.11	11.17	11.11	11.17
758	NASDAQ	ARTNA	Wed, Sep 15, 1999	11.08	11.17	11.00	11.17
757	NASDAQ	ARTNA	Tue, Sep 14, 1999	11.11	11.11	11.00	11.00
756	NASDAQ	ARTNA	Mon, Sep 13, 1999	11.06	11.17	11.00	11.17
755	NASDAQ	ARTNA	Fri, Sep 10, 1999	11.06	11.06	11.06	11.06
754	NASDAQ	ARTNA	Thu, Sep 9, 1999	11.11	11.17	11.00	11.00
753	NASDAQ	ARTNA	Wed, Sep 8, 1999	11.11	11.17	11.00	11.00
752	NASDAQ	ARTNA	Tue, Sep 7, 1999	11.11	11.17	10.94	11.17
751	NASDAQ	ARTNA	Fri, Sep 3, 1999	11.17	11.17	11.11	11.11
750	NASDAQ	ARTNA	Thu, Sep 2, 1999	11.11	11.11	11.00	11.11
749	NASDAQ	ARTNA	Wed, Sep 1, 1999	11.06	11.11	11.00	11.11
748	NASDAQ	ARTNA	Tue, Aug 31, 1999	11.15	11.17	11.11	11.17
747	NASDAQ	ARTNA	Mon, Aug 30, 1999	11.22	11.39	11.06	11.17
746	NASDAQ	ARTNA	Fri, Aug 27, 1999	11.17	11.20	11.06	11.17
745	NASDAQ	ARTNA	Thu, Aug 26, 1999	11.11	11.17	11.06	11.17
744	NASDAQ	ARTNA	Wed, Aug 25, 1999	10.75	11.17	10.67	11.17
743	NASDAQ	ARTNA	Tue, Aug 24, 1999	11.11	11.25	10.28	10.89
742	NASDAQ	ARTNA	Mon, Aug 23, 1999	10.89	11.11	10.72	11.11
741	NASDAQ	ARTNA	Fri, Aug 20, 1999	10.44	10.89	10.44	10.89
740	NASDAQ	ARTNA	Thu, Aug 19, 1999	10.61	10.67	10.44	10.67
739	NASDAQ	ARTNA	Wed, Aug 18, 1999	10.44	10.44	10.22	10.22
738	NASDAQ	ARTNA	Tue, Aug 17, 1999	10.61	10.61	10.44	10.44
737	NASDAQ	ARTNA	Mon, Aug 16, 1999	10.25	10.61	10.25	10.61
736	NASDAQ	ARTNA	Thu, Aug 12, 1999	10.39	10.61	10.33	10.56
735	NASDAQ	ARTNA	Wed, Aug 11, 1999	10.11	10.11	9.86	9.86
734	NASDAQ	ARTNA	Tue, Aug 10, 1999	10.28	10.28	10.06	10.17
733	NASDAQ	ARTNA	Mon, Aug 9, 1999	10.56	10.56	10.28	10.33
732	NASDAQ	ARTNA	Fri, Aug 6, 1999	10.44	10.44	10.33	10.33
731	NASDAQ	ARTNA	Thu, Aug 5, 1999	10.61	10.61	10.44	10.56
730	NASDAQ	ARTNA	Wed, Aug 4, 1999	10.28	10.61	10.28	10.61
729	NASDAQ	ARTNA	Tue, Aug 3, 1999	10.44	10.67	10.33	10.67
728	NASDAQ	ARTNA	Mon, Aug 2, 1999	10.56	10.56	10.33	10.33
727	NASDAQ	ARTNA	Fri, Jul 30, 1999	10.44	10.44	10.22	10.44
726	NASDAQ	ARTNA	Thu, Jul 29, 1999	10.72	10.72	10.44	10.44
725	NASDAQ	ARTNA	Wed, Jul 28, 1999	10.56	10.56	10.56	10.56
724	NASDAQ	ARTNA	Tue, Jul 27, 1999	10.76	10.78	10.33	10.33
723	NASDAQ	ARTNA	Mon, Jul 26, 1999	10.33	10.61	10.33	10.61
722	NASDAQ	ARTNA	Thu, Jul 22, 1999	10.67	10.67	10.44	10.67
721	NASDAQ	ARTNA	Wed, Jul 21, 1999	10.54	10.56	10.42	10.42
720	NASDAQ	ARTNA	Tue, Jul 20, 1999	10.44	10.56	10.42	10.56
719	NASDAQ	ARTNA	Mon, Jul 19, 1999	10.44	10.56	10.44	10.44
718	NASDAQ	ARTNA	Fri, Jul 16, 1999	10.53	10.56	10.44	10.44
717	NASDAQ	ARTNA	Thu, Jul 15, 1999	10.56	10.61	10.56	10.56
716	NASDAQ	ARTNA	Wed, Jul 14, 1999	10.67	10.67	10.56	10.61
715	NASDAQ	ARTNA	Tue, Jul 13, 1999	10.47	10.67	10.47	10.61
714	NASDAQ	ARTNA	Mon, Jul 12, 1999	10.44	10.56	10.42	10.56
713	NASDAQ	ARTNA	Fri, Jul 9, 1999	10.44	10.44	10.42	10.44
712	NASDAQ	ARTNA	Thu, Jul 8, 1999	10.44	10.50	10.39	10.44
711	NASDAQ	ARTNA	Wed, Jul 7, 1999	10.33	10.56	10.17	10.56
710	NASDAQ	ARTNA	Tue, Jul 6, 1999	10.33	10.33	10.00	10.33
709	NASDAQ	ARTNA	Fri, Jul 2, 1999	10.17	10.33	10.17	10.33
708	NASDAQ	ARTNA	Thu, Jul 1, 1999	10.18	10.33	10.00	10.06
707	NASDAQ	ARTNA	Wed, Jun 30, 1999	10.33	10.33	10.33	10.33
706	NASDAQ	ARTNA	Tue, Jun 29, 1999	10.11	10.11	10.00	10.00
705	NASDAQ	ARTNA	Mon, Jun 28, 1999	10.33	10.33	10.00	10.11
704	NASDAQ	ARTNA	Thu, Jun 24, 1999	10.33	10.33	10.00	10.00
703	NASDAQ	ARTNA	Wed, Jun 23, 1999	10.06	10.33	10.06	10.11
702	NASDAQ	ARTNA	Tue, Jun 22, 1999	10.13	10.33	10.13	10.33
701	NASDAQ	ARTNA	Mon, Jun 21, 1999	10.14	10.14	10.14	10.14
700	NASDAQ	ARTNA	Fri, Jun 18, 1999	10.14	10.50	10.11	10.11
699	NASDAQ	ARTNA	Thu, Jun 17, 1999	10.44	10.44	10.14	10.22
698	NASDAQ	ARTNA	Wed, Jun 16, 1999	10.33	10.33	10.22	10.22
697	NASDAQ	ARTNA	Tue, Jun 15, 1999	10.22	10.44	10.22	10.33
696	NASDAQ	ARTNA	Mon, Jun 14, 1999	10.28	10.28	10.22	10.22
695	NASDAQ	ARTNA	Fri, Jun 11, 1999	10.44	10.44	10.44	10.44
694	NASDAQ	ARTNA	Thu, Jun 10, 1999	10.44	10.44	10.00	10.44
693	NASDAQ	ARTNA	Wed, Jun 9, 1999	10.22	10.22	10.00	10.00
692	NASDAQ	ARTNA	Tue, Jun 8, 1999	10.44	10.44	10.00	10.00
691	NASDAQ	ARTNA	Mon, Jun 7, 1999	10.00	10.44	10.00	10.11
690	NASDAQ	ARTNA	Fri, Jun 4, 1999	10.44	10.44	10.00	10.33
689	NASDAQ	ARTNA	Thu, Jun 3, 1999	9.89	10.44	9.89	10.44
688	NASDAQ	ARTNA	Wed, Jun 2, 1999	9.83	10.11	9.78	10.11
687	NASDAQ	ARTNA	Tue, Jun 1, 1999	9.61	9.78	9.61	9.78
686	NASDAQ	ARTNA	Fri, May 28, 1999	9.78	9.89	9.61	9.61
685	NASDAQ	ARTNA	Thu, May 27, 1999	9.78	9.78	9.50	9.56
684	NASDAQ	ARTNA	Wed, May 26, 1999	9.72	9.72	9.56	9.67
683	NASDAQ	ARTNA	Tue, May 25, 1999	9.83	9.83	9.83	9.83
682	NASDAQ	ARTNA	Mon, May 24, 1999	9.78	10.00	9.50	9.56
681	NASDAQ	ARTNA	Fri, May 21, 1999	9.78	9.78	9.78	9.78
680	NASDAQ	ARTNA	Thu, May 20, 1999	9.39	9.78	9.33	9.78
679	NASDAQ	ARTNA	Wed, May 19, 1999	9.33	9.78	9.33	9.72
678	NASDAQ	ARTNA	Tue, May 18, 1999	9.56	9.56	9.33	9.33
677	NASDAQ	ARTNA	Mon, May 17, 1999	9.78	9.78	9.78	9.78
676	NASDAQ	ARTNA	Fri, May 14, 1999	9.78	9.78	9.53	9.67
675	NASDAQ	ARTNA	Wed, May 12, 1999	9.53	10.22	9.53	10.22
674	NASDAQ	ARTNA	Tue, May 11, 1999	9.83	9.94	9.53	9.56
673	NASDAQ	ARTNA	Mon, May 10, 1999	9.78	9.78	9.56	9.56
672	NASDAQ	ARTNA	Fri, May 7, 1999	9.78	10.22	9.72	9.94
671	NASDAQ	ARTNA	Thu, May 6, 1999	9.78	9.78	9.56	9.78
670	NASDAQ	ARTNA	Wed, May 5, 1999	9.83	9.94	9.53	9.53
669	NASDAQ	ARTNA	Tue, May 4, 1999	9.78	10.22	9.78	9.89
668	NASDAQ	ARTNA	Mon, May 3, 1999	9.89	9.89	9.78	9.78
667	NASDAQ	ARTNA	Fri, Apr 30, 1999	10.00	10.00	10.00	10.00
666	NASDAQ	ARTNA	Thu, Apr 29, 1999	9.83	9.83	9.78	9.83
665	NASDAQ	ARTNA	Wed, Apr 28, 1999	9.78	10.19	9.78	10.19
664	NASDAQ	ARTNA	Tue, Apr 27, 1999	10.17	10.22	9.78	9.78
663	NASDAQ	ARTNA	Mon, Apr 26, 1999	9.89	10.17	9.89	10.11
662	NASDAQ	ARTNA	Fri, Apr 23, 1999	9.78	9.94	9.78	9.89
661	NASDAQ	ARTNA	Thu, Apr 22, 1999	10.06	10.28	9.78	9.78
660	NASDAQ	ARTNA	Wed, Apr 21, 1999	10.56	10.56	10.06	10.06
659	NASDAQ	ARTNA	Tue, Apr 20, 1999	10.33	10.56	10.22	10.50
658	NASDAQ	ARTNA	Mon, Apr 19, 1999	9.78	10.22	9.78	10.22
657	NASDAQ	ARTNA	Fri, Apr 16, 1999	9.61	9.89	9.56	9.89
656	NASDAQ	ARTNA	Thu, Apr 15, 1999	9.78	10.11	9.67	9.78
655	NASDAQ	ARTNA	Wed, Apr 14, 1999	10.72	10.72	9.78	9.81
654	NASDAQ	ARTNA	Tue, Apr 13, 1999	10.22	10.33	10.22	10.28
653	NASDAQ	ARTNA	Mon, Apr 12, 1999	10.22	10.78	10.22	10.78
652	NASDAQ	ARTNA	Fri, Apr 9, 1999	10.67	11.17	10.22	10.61
651	NASDAQ	ARTNA	Thu, Apr 8, 1999	11.11	11.22	10.44	10.61
650	NASDAQ	ARTNA	Wed, Apr 7, 1999	11.61	11.61	11.56	11.56
649	NASDAQ	ARTNA	Tue, Apr 6, 1999	11.22	11.67	11.22	11.67
648	NASDAQ	ARTNA	Mon, Apr 5, 1999	12.00	12.00	11.39	11.56
647	NASDAQ	ARTNA	Thu, Apr 1, 1999	11.33	11.33	11.33	11.33
646	NASDAQ	ARTNA	Mon, Mar 29, 1999	11.17	12.00	11.17	12.00
645	NASDAQ	ARTNA	Fri, Mar 26, 1999	11.56	11.67	11.56	11.67
644	NASDAQ	ARTNA	Thu, Mar 25, 1999	10.67	11.45	10.67	10.67
643	NASDAQ	ARTNA	Wed, Mar 24, 1999	10.67	11.22	10.67	11.22
642	NASDAQ	ARTNA	Tue, Mar 23, 1999	10.56	11.22	10.56	11.22
641	NASDAQ	ARTNA	Mon, Mar 22, 1999	10.56	10.56	10.56	10.56
640	NASDAQ	ARTNA	Thu, Mar 18, 1999	10.72	10.72	10.72	10.72
639	NASDAQ	ARTNA	Wed, Mar 17, 1999	10.89	10.89	10.89	10.89
638	NASDAQ	ARTNA	Tue, Mar 16, 1999	10.39	10.89	10.39	10.89
637	NASDAQ	ARTNA	Mon, Mar 15, 1999	10.67	10.67	10.67	10.67
636	NASDAQ	ARTNA	Thu, Mar 11, 1999	10.89	10.89	10.28	10.67
635	NASDAQ	ARTNA	Wed, Mar 10, 1999	10.89	10.89	10.89	10.89
634	NASDAQ	ARTNA	Mon, Mar 8, 1999	11.11	11.11	11.11	11.11
633	NASDAQ	ARTNA	Fri, Mar 5, 1999	10.67	10.67	10.56	10.56
632	NASDAQ	ARTNA	Tue, Mar 2, 1999	11.11	11.11	11.11	11.11
631	NASDAQ	ARTNA	Mon, Mar 1, 1999	11.11	11.56	11.11	11.56
630	NASDAQ	ARTNA	Fri, Feb 26, 1999	10.89	11.11	10.67	11.11
629	NASDAQ	ARTNA	Thu, Feb 25, 1999	10.67	10.67	10.22	10.22
628	NASDAQ	ARTNA	Wed, Feb 24, 1999	11.45	11.45	10.67	11.11
627	NASDAQ	ARTNA	Tue, Feb 23, 1999	9.78	11.11	9.67	11.11
626	NASDAQ	ARTNA	Mon, Feb 22, 1999	10.11	10.22	9.56	9.78
625	NASDAQ	ARTNA	Fri, Feb 19, 1999	9.78	10.22	9.56	9.89
624	NASDAQ	ARTNA	Thu, Feb 18, 1999	10.33	10.33	9.78	9.78
623	NASDAQ	ARTNA	Wed, Feb 17, 1999	10.97	11.45	10.22	10.22
622	NASDAQ	ARTNA	Tue, Feb 16, 1999	11.78	11.89	11.11	11.56
621	NASDAQ	ARTNA	Fri, Feb 12, 1999	11.78	11.78	11.78	11.78
620	NASDAQ	ARTNA	Thu, Feb 11, 1999	12.00	12.00	12.00	12.00
619	NASDAQ	ARTNA	Wed, Feb 10, 1999	11.89	11.89	11.78	11.78
618	NASDAQ	ARTNA	Tue, Feb 9, 1999	12.11	12.11	12.00	12.11
617	NASDAQ	ARTNA	Mon, Feb 8, 1999	12.00	12.00	12.00	12.00
616	NASDAQ	ARTNA	Fri, Feb 5, 1999	12.00	12.22	12.00	12.11
615	NASDAQ	ARTNA	Thu, Feb 4, 1999	12.00	12.22	11.89	12.22
614	NASDAQ	ARTNA	Wed, Feb 3, 1999	12.22	12.33	12.00	12.33
613	NASDAQ	ARTNA	Tue, Feb 2, 1999	12.22	12.22	12.00	12.00
612	NASDAQ	ARTNA	Mon, Feb 1, 1999	12.33	12.33	12.00	12.00
611	NASDAQ	ARTNA	Fri, Jan 29, 1999	12.00	12.33	12.00	12.33
610	NASDAQ	ARTNA	Thu, Jan 28, 1999	12.00	12.00	12.00	12.00
609	NASDAQ	ARTNA	Wed, Jan 27, 1999	12.00	12.00	12.00	12.00
608	NASDAQ	ARTNA	Tue, Jan 26, 1999	12.22	12.22	12.00	12.22
607	NASDAQ	ARTNA	Mon, Jan 25, 1999	12.33	12.33	12.28	12.28
606	NASDAQ	ARTNA	Fri, Jan 22, 1999	11.86	12.33	11.86	12.33
605	NASDAQ	ARTNA	Thu, Jan 21, 1999	11.78	12.33	11.78	12.33
604	NASDAQ	ARTNA	Wed, Jan 20, 1999	12.33	12.33	12.11	12.33
603	NASDAQ	ARTNA	Tue, Jan 19, 1999	12.33	12.33	11.78	11.89
602	NASDAQ	ARTNA	Fri, Jan 15, 1999	12.33	12.33	12.33	12.33
601	NASDAQ	ARTNA	Thu, Jan 14, 1999	12.33	12.33	11.78	11.78
600	NASDAQ	ARTNA	Wed, Jan 13, 1999	11.56	12.33	11.56	12.33
599	NASDAQ	ARTNA	Tue, Jan 12, 1999	12.33	12.33	12.11	12.33
598	NASDAQ	ARTNA	Mon, Jan 11, 1999	12.22	12.22	12.22	12.22
597	NASDAQ	ARTNA	Fri, Jan 8, 1999	12.11	12.33	12.11	12.33
596	NASDAQ	ARTNA	Thu, Jan 7, 1999	12.33	12.33	12.33	12.33
595	NASDAQ	ARTNA	Wed, Jan 6, 1999	12.33	12.33	12.06	12.33
594	NASDAQ	ARTNA	Tue, Jan 5, 1999	12.33	12.33	12.00	12.06
593	NASDAQ	ARTNA	Mon, Jan 4, 1999	12.33	12.33	12.28	12.33
592	NASDAQ	ARTNA	Thu, Dec 31, 1998	12.22	12.22	11.56	11.56
591	NASDAQ	ARTNA	Wed, Dec 30, 1998	12.11	12.22	11.56	11.56
590	NASDAQ	ARTNA	Mon, Dec 28, 1998	11.56	12.00	11.56	11.83
589	NASDAQ	ARTNA	Wed, Dec 23, 1998	12.22	12.22	11.33	11.33
588	NASDAQ	ARTNA	Tue, Dec 22, 1998	11.78	12.22	11.78	11.78
587	NASDAQ	ARTNA	Mon, Dec 21, 1998	12.00	12.17	11.78	12.17
586	NASDAQ	ARTNA	Fri, Dec 18, 1998	11.78	11.78	11.78	11.78
585	NASDAQ	ARTNA	Thu, Dec 17, 1998	11.78	12.11	11.78	12.11
584	NASDAQ	ARTNA	Wed, Dec 16, 1998	12.22	12.22	11.78	11.78
583	NASDAQ	ARTNA	Tue, Dec 15, 1998	12.00	12.11	11.89	12.11
582	NASDAQ	ARTNA	Mon, Dec 14, 1998	12.00	12.89	12.00	12.00
581	NASDAQ	ARTNA	Fri, Dec 11, 1998	11.78	12.00	11.11	12.00
580	NASDAQ	ARTNA	Thu, Dec 10, 1998	11.56	11.78	11.56	11.78
579	NASDAQ	ARTNA	Wed, Dec 9, 1998	11.33	11.45	11.33	11.45
578	NASDAQ	ARTNA	Tue, Dec 8, 1998	11.33	11.33	10.78	11.11
577	NASDAQ	ARTNA	Mon, Dec 7, 1998	11.56	11.56	11.11	11.11
576	NASDAQ	ARTNA	Fri, Dec 4, 1998	10.89	11.33	10.89	11.11
575	NASDAQ	ARTNA	Thu, Dec 3, 1998	10.67	10.89	10.67	10.89
574	NASDAQ	ARTNA	Wed, Dec 2, 1998	10.67	10.67	10.67	10.67
573	NASDAQ	ARTNA	Tue, Dec 1, 1998	10.67	10.67	10.22	10.67
572	NASDAQ	ARTNA	Wed, Nov 25, 1998	10.56	10.56	10.44	10.44
571	NASDAQ	ARTNA	Tue, Nov 24, 1998	10.22	10.56	10.11	10.56
570	NASDAQ	ARTNA	Mon, Nov 23, 1998	10.22	10.56	10.22	10.28
569	NASDAQ	ARTNA	Fri, Nov 20, 1998	10.44	10.44	10.11	10.11
568	NASDAQ	ARTNA	Thu, Nov 19, 1998	10.44	10.44	10.44	10.44
567	NASDAQ	ARTNA	Wed, Nov 18, 1998	10.33	10.33	10.33	10.33
566	NASDAQ	ARTNA	Tue, Nov 17, 1998	10.22	10.33	10.22	10.33
565	NASDAQ	ARTNA	Mon, Nov 16, 1998	9.78	10.22	9.78	10.22
564	NASDAQ	ARTNA	Thu, Nov 12, 1998	9.78	10.00	9.78	10.00
563	NASDAQ	ARTNA	Wed, Nov 11, 1998	10.00	10.11	10.00	10.00
562	NASDAQ	ARTNA	Tue, Nov 10, 1998	9.89	10.11	9.78	9.78
561	NASDAQ	ARTNA	Mon, Nov 9, 1998	10.11	10.11	9.67	9.67
560	NASDAQ	ARTNA	Fri, Nov 6, 1998	9.44	10.11	9.44	9.67
559	NASDAQ	ARTNA	Thu, Nov 5, 1998	10.00	10.00	10.00	10.00
558	NASDAQ	ARTNA	Wed, Nov 4, 1998	9.78	9.78	9.78	9.78
557	NASDAQ	ARTNA	Tue, Nov 3, 1998	10.00	10.00	10.00	10.00
556	NASDAQ	ARTNA	Mon, Nov 2, 1998	10.00	10.00	9.89	9.89
555	NASDAQ	ARTNA	Wed, Oct 28, 1998	9.78	9.78	9.78	9.78
554	NASDAQ	ARTNA	Tue, Oct 27, 1998	10.11	10.11	9.33	9.33
553	NASDAQ	ARTNA	Mon, Oct 26, 1998	9.89	9.89	9.89	9.89
552	NASDAQ	ARTNA	Thu, Oct 22, 1998	10.00	10.00	9.78	9.78
551	NASDAQ	ARTNA	Wed, Oct 21, 1998	10.00	10.00	9.78	9.78
550	NASDAQ	ARTNA	Tue, Oct 20, 1998	9.83	10.00	9.78	9.78
549	NASDAQ	ARTNA	Mon, Oct 19, 1998	10.00	10.00	9.89	9.89
548	NASDAQ	ARTNA	Thu, Oct 15, 1998	9.78	10.11	9.78	10.11
547	NASDAQ	ARTNA	Wed, Oct 14, 1998	9.78	9.78	9.67	9.78
546	NASDAQ	ARTNA	Tue, Oct 13, 1998	10.00	10.00	9.72	9.72
545	NASDAQ	ARTNA	Mon, Oct 12, 1998	10.11	10.11	9.67	9.78
544	NASDAQ	ARTNA	Fri, Oct 9, 1998	10.22	10.22	9.78	9.78
543	NASDAQ	ARTNA	Thu, Oct 8, 1998	10.11	10.11	9.33	9.78
542	NASDAQ	ARTNA	Wed, Oct 7, 1998	9.78	10.11	9.78	10.11
541	NASDAQ	ARTNA	Tue, Oct 6, 1998	10.22	10.50	9.78	10.33
540	NASDAQ	ARTNA	Mon, Oct 5, 1998	10.44	10.44	9.78	10.22
539	NASDAQ	ARTNA	Fri, Oct 2, 1998	10.56	10.56	9.89	10.44
538	NASDAQ	ARTNA	Thu, Oct 1, 1998	10.44	10.56	9.33	10.56
537	NASDAQ	ARTNA	Wed, Sep 30, 1998	9.89	10.22	9.78	10.22
536	NASDAQ	ARTNA	Tue, Sep 29, 1998	9.56	9.89	9.56	9.78
535	NASDAQ	ARTNA	Mon, Sep 28, 1998	9.50	9.56	9.33	9.56
534	NASDAQ	ARTNA	Fri, Sep 25, 1998	9.50	9.50	9.50	9.50
533	NASDAQ	ARTNA	Thu, Sep 24, 1998	9.50	9.50	9.50	9.50
532	NASDAQ	ARTNA	Wed, Sep 23, 1998	9.11	9.56	9.11	9.50
531	NASDAQ	ARTNA	Tue, Sep 22, 1998	9.50	9.50	9.00	9.44
530	NASDAQ	ARTNA	Mon, Sep 21, 1998	9.11	9.50	9.11	9.50
529	NASDAQ	ARTNA	Fri, Sep 18, 1998	9.11	9.11	9.11	9.11
528	NASDAQ	ARTNA	Thu, Sep 17, 1998	9.56	9.56	9.28	9.28
527	NASDAQ	ARTNA	Wed, Sep 16, 1998	9.33	9.56	9.33	9.56
526	NASDAQ	ARTNA	Tue, Sep 15, 1998	9.56	9.56	9.33	9.50
525	NASDAQ	ARTNA	Mon, Sep 14, 1998	9.89	9.89	9.67	9.75
524	NASDAQ	ARTNA	Fri, Sep 11, 1998	9.78	9.78	9.78	9.78
523	NASDAQ	ARTNA	Thu, Sep 10, 1998	9.56	9.56	9.33	9.33
522	NASDAQ	ARTNA	Wed, Sep 9, 1998	9.22	9.89	9.22	9.89
521	NASDAQ	ARTNA	Tue, Sep 8, 1998	9.89	9.89	9.78	9.78
520	NASDAQ	ARTNA	Fri, Sep 4, 1998	9.67	9.67	9.33	9.67
519	NASDAQ	ARTNA	Thu, Sep 3, 1998	9.78	10.00	9.33	9.67
518	NASDAQ	ARTNA	Wed, Sep 2, 1998	8.89	9.78	8.89	9.72
517	NASDAQ	ARTNA	Tue, Sep 1, 1998	8.89	8.89	8.67	8.67
516	NASDAQ	ARTNA	Mon, Aug 31, 1998	8.89	8.89	8.67	8.89
515	NASDAQ	ARTNA	Fri, Aug 28, 1998	8.89	8.89	8.89	8.89
514	NASDAQ	ARTNA	Thu, Aug 27, 1998	8.89	8.89	8.72	8.72
513	NASDAQ	ARTNA	Wed, Aug 26, 1998	8.78	8.89	8.78	8.89
512	NASDAQ	ARTNA	Tue, Aug 25, 1998	8.67	8.89	8.67	8.89
511	NASDAQ	ARTNA	Mon, Aug 24, 1998	8.78	8.78	8.61	8.78
510	NASDAQ	ARTNA	Fri, Aug 21, 1998	8.78	8.78	8.56	8.56
509	NASDAQ	ARTNA	Thu, Aug 20, 1998	8.78	8.78	8.78	8.78
508	NASDAQ	ARTNA	Wed, Aug 19, 1998	8.67	8.72	8.67	8.72
507	NASDAQ	ARTNA	Tue, Aug 18, 1998	8.56	8.61	8.56	8.61
506	NASDAQ	ARTNA	Mon, Aug 17, 1998	8.56	8.67	8.50	8.56
505	NASDAQ	ARTNA	Fri, Aug 14, 1998	8.67	8.67	8.50	8.56
504	NASDAQ	ARTNA	Wed, Aug 12, 1998	8.72	8.72	8.72	8.72
503	NASDAQ	ARTNA	Tue, Aug 11, 1998	8.56	8.72	8.50	8.72
502	NASDAQ	ARTNA	Mon, Aug 10, 1998	8.72	8.72	8.56	8.56
501	NASDAQ	ARTNA	Fri, Aug 7, 1998	8.56	8.72	8.56	8.72
500	NASDAQ	ARTNA	Thu, Aug 6, 1998	8.61	8.61	8.61	8.61
499	NASDAQ	ARTNA	Wed, Aug 5, 1998	8.67	8.67	8.56	8.56
498	NASDAQ	ARTNA	Tue, Aug 4, 1998	8.67	8.67	8.67	8.67
497	NASDAQ	ARTNA	Mon, Aug 3, 1998	8.61	8.67	8.61	8.67
496	NASDAQ	ARTNA	Fri, Jul 31, 1998	8.56	8.56	8.50	8.50
495	NASDAQ	ARTNA	Thu, Jul 30, 1998	8.44	8.61	8.39	8.56
494	NASDAQ	ARTNA	Wed, Jul 29, 1998	8.39	8.39	8.39	8.39
493	NASDAQ	ARTNA	Tue, Jul 28, 1998	8.33	8.44	8.33	8.44
492	NASDAQ	ARTNA	Mon, Jul 27, 1998	8.33	8.44	8.33	8.44
491	NASDAQ	ARTNA	Fri, Jul 24, 1998	8.44	8.44	8.44	8.44
490	NASDAQ	ARTNA	Thu, Jul 23, 1998	8.39	8.39	8.33	8.36
489	NASDAQ	ARTNA	Tue, Jul 21, 1998	8.33	8.50	8.33	8.33
488	NASDAQ	ARTNA	Mon, Jul 20, 1998	8.28	8.44	8.28	8.44
487	NASDAQ	ARTNA	Fri, Jul 17, 1998	8.33	8.33	8.33	8.33
486	NASDAQ	ARTNA	Thu, Jul 16, 1998	8.44	8.44	8.44	8.44
485	NASDAQ	ARTNA	Wed, Jul 15, 1998	8.33	8.39	8.33	8.33
484	NASDAQ	ARTNA	Tue, Jul 14, 1998	8.33	8.39	8.33	8.39
483	NASDAQ	ARTNA	Mon, Jul 13, 1998	8.44	8.44	8.33	8.33
482	NASDAQ	ARTNA	Fri, Jul 10, 1998	8.33	8.33	8.33	8.33
481	NASDAQ	ARTNA	Thu, Jul 9, 1998	8.33	8.33	8.33	8.33
480	NASDAQ	ARTNA	Wed, Jul 8, 1998	8.39	8.39	8.33	8.33
479	NASDAQ	ARTNA	Tue, Jul 7, 1998	8.44	8.44	8.33	8.33
478	NASDAQ	ARTNA	Mon, Jul 6, 1998	8.33	8.39	8.33	8.39
477	NASDAQ	ARTNA	Thu, Jul 2, 1998	8.39	8.39	8.39	8.39
476	NASDAQ	ARTNA	Wed, Jul 1, 1998	8.33	8.44	8.33	8.44
475	NASDAQ	ARTNA	Mon, Jun 29, 1998	8.33	8.33	8.33	8.33
474	NASDAQ	ARTNA	Fri, Jun 26, 1998	8.33	8.44	8.33	8.33
473	NASDAQ	ARTNA	Wed, Jun 24, 1998	8.33	8.44	8.33	8.33
472	NASDAQ	ARTNA	Tue, Jun 23, 1998	8.44	8.44	8.44	8.44
471	NASDAQ	ARTNA	Mon, Jun 22, 1998	8.33	8.44	8.33	8.44
470	NASDAQ	ARTNA	Fri, Jun 19, 1998	8.33	8.39	8.33	8.39
469	NASDAQ	ARTNA	Thu, Jun 18, 1998	8.33	8.33	8.33	8.33
468	NASDAQ	ARTNA	Wed, Jun 17, 1998	8.33	8.33	8.33	8.33
467	NASDAQ	ARTNA	Tue, Jun 16, 1998	8.33	8.33	8.33	8.33
466	NASDAQ	ARTNA	Mon, Jun 15, 1998	8.33	8.33	8.33	8.33
465	NASDAQ	ARTNA	Fri, Jun 12, 1998	8.33	8.44	8.33	8.44
464	NASDAQ	ARTNA	Thu, Jun 11, 1998	8.56	8.56	8.33	8.33
463	NASDAQ	ARTNA	Wed, Jun 10, 1998	8.33	8.33	8.33	8.33
462	NASDAQ	ARTNA	Tue, Jun 9, 1998	8.33	8.44	8.33	8.44
461	NASDAQ	ARTNA	Mon, Jun 8, 1998	8.44	8.44	8.33	8.33
460	NASDAQ	ARTNA	Wed, Jun 3, 1998	8.39	8.50	8.39	8.44
459	NASDAQ	ARTNA	Tue, Jun 2, 1998	8.50	8.50	8.44	8.44
458	NASDAQ	ARTNA	Mon, Jun 1, 1998	8.50	8.50	8.50	8.50
457	NASDAQ	ARTNA	Fri, May 29, 1998	8.50	8.50	8.50	8.50
456	NASDAQ	ARTNA	Thu, May 28, 1998	8.50	8.50	8.44	8.50
455	NASDAQ	ARTNA	Wed, May 27, 1998	8.44	8.47	8.44	8.47
454	NASDAQ	ARTNA	Tue, May 26, 1998	8.47	8.47	8.44	8.44
453	NASDAQ	ARTNA	Fri, May 22, 1998	8.44	8.50	8.44	8.44
452	NASDAQ	ARTNA	Thu, May 21, 1998	8.44	8.44	8.44	8.44
451	NASDAQ	ARTNA	Wed, May 20, 1998	8.50	8.50	8.44	8.44
450	NASDAQ	ARTNA	Tue, May 19, 1998	8.50	8.50	8.44	8.44
449	NASDAQ	ARTNA	Mon, May 18, 1998	8.44	8.44	8.44	8.44
448	NASDAQ	ARTNA	Fri, May 15, 1998	8.44	8.44	8.44	8.44
447	NASDAQ	ARTNA	Wed, May 13, 1998	8.44	8.56	8.44	8.56
446	NASDAQ	ARTNA	Tue, May 12, 1998	8.44	8.44	8.44	8.44
445	NASDAQ	ARTNA	Mon, May 11, 1998	8.44	8.44	8.44	8.44
444	NASDAQ	ARTNA	Fri, May 8, 1998	8.67	8.67	8.44	8.44
443	NASDAQ	ARTNA	Thu, May 7, 1998	8.56	8.56	8.56	8.56
442	NASDAQ	ARTNA	Wed, May 6, 1998	8.50	8.56	8.50	8.56
441	NASDAQ	ARTNA	Tue, May 5, 1998	8.39	8.44	8.39	8.44
440	NASDAQ	ARTNA	Mon, May 4, 1998	8.28	8.44	8.28	8.44
439	NASDAQ	ARTNA	Fri, May 1, 1998	8.39	8.39	8.28	8.28
438	NASDAQ	ARTNA	Thu, Apr 30, 1998	8.44	8.44	8.44	8.44
437	NASDAQ	ARTNA	Wed, Apr 29, 1998	8.44	8.44	8.44	8.44
436	NASDAQ	ARTNA	Tue, Apr 28, 1998	8.33	8.33	8.28	8.33
435	NASDAQ	ARTNA	Mon, Apr 27, 1998	8.44	8.44	8.28	8.28
434	NASDAQ	ARTNA	Fri, Apr 24, 1998	8.39	8.39	8.39	8.39
433	NASDAQ	ARTNA	Thu, Apr 23, 1998	8.33	8.33	8.33	8.33
432	NASDAQ	ARTNA	Wed, Apr 22, 1998	8.33	8.33	8.33	8.33
431	NASDAQ	ARTNA	Tue, Apr 21, 1998	8.33	8.33	8.33	8.33
430	NASDAQ	ARTNA	Mon, Apr 20, 1998	8.44	8.44	8.33	8.33
429	NASDAQ	ARTNA	Fri, Apr 17, 1998	8.33	8.33	8.33	8.33
428	NASDAQ	ARTNA	Thu, Apr 16, 1998	8.44	8.56	8.33	8.33
427	NASDAQ	ARTNA	Wed, Apr 15, 1998	8.33	8.44	8.33	8.44
426	NASDAQ	ARTNA	Tue, Apr 14, 1998	8.44	8.44	8.42	8.44
425	NASDAQ	ARTNA	Mon, Apr 13, 1998	8.44	8.44	8.44	8.44
424	NASDAQ	ARTNA	Thu, Apr 9, 1998	8.39	8.42	8.39	8.39
423	NASDAQ	ARTNA	Wed, Apr 8, 1998	8.44	8.47	8.42	8.44
422	NASDAQ	ARTNA	Tue, Apr 7, 1998	8.44	8.50	8.44	8.44
421	NASDAQ	ARTNA	Mon, Apr 6, 1998	8.44	8.50	8.44	8.50
420	NASDAQ	ARTNA	Fri, Apr 3, 1998	8.33	8.44	8.33	8.42
419	NASDAQ	ARTNA	Thu, Apr 2, 1998	8.39	8.39	8.33	8.33
418	NASDAQ	ARTNA	Fri, Mar 27, 1998	8.22	8.22	8.22	8.22
417	NASDAQ	ARTNA	Thu, Mar 26, 1998	8.44	8.44	8.22	8.22
416	NASDAQ	ARTNA	Wed, Mar 25, 1998	8.22	8.44	8.11	8.11
415	NASDAQ	ARTNA	Tue, Mar 24, 1998	8.33	8.33	8.33	8.33
414	NASDAQ	ARTNA	Mon, Mar 23, 1998	8.22	8.22	8.11	8.11
413	NASDAQ	ARTNA	Thu, Mar 19, 1998	8.11	8.11	8.11	8.11
412	NASDAQ	ARTNA	Wed, Mar 18, 1998	8.39	8.39	8.39	8.39
411	NASDAQ	ARTNA	Tue, Mar 17, 1998	8.22	8.28	8.11	8.11
410	NASDAQ	ARTNA	Mon, Mar 16, 1998	8.17	8.17	8.17	8.17
409	NASDAQ	ARTNA	Fri, Mar 13, 1998	8.11	8.39	8.11	8.22
408	NASDAQ	ARTNA	Thu, Mar 12, 1998	8.11	8.11	8.11	8.11
407	NASDAQ	ARTNA	Wed, Mar 11, 1998	8.22	8.33	8.11	8.11
406	NASDAQ	ARTNA	Mon, Mar 9, 1998	8.33	8.33	8.28	8.28
405	NASDAQ	ARTNA	Fri, Mar 6, 1998	8.33	8.33	8.11	8.33
404	NASDAQ	ARTNA	Thu, Mar 5, 1998	8.39	8.39	8.22	8.22
403	NASDAQ	ARTNA	Wed, Mar 4, 1998	8.22	8.50	8.22	8.50
402	NASDAQ	ARTNA	Tue, Mar 3, 1998	8.56	8.56	8.22	8.22
401	NASDAQ	ARTNA	Fri, Feb 27, 1998	8.44	8.44	8.22	8.22
400	NASDAQ	ARTNA	Thu, Feb 26, 1998	8.50	8.50	8.44	8.44
399	NASDAQ	ARTNA	Wed, Feb 25, 1998	8.22	8.22	8.22	8.22
398	NASDAQ	ARTNA	Tue, Feb 24, 1998	8.39	8.44	8.39	8.44
397	NASDAQ	ARTNA	Mon, Feb 23, 1998	8.44	8.56	8.33	8.56
396	NASDAQ	ARTNA	Fri, Feb 20, 1998	8.39	8.44	8.11	8.44
395	NASDAQ	ARTNA	Thu, Feb 19, 1998	8.11	8.11	8.11	8.11
394	NASDAQ	ARTNA	Wed, Feb 18, 1998	8.39	8.39	8.39	8.39
393	NASDAQ	ARTNA	Tue, Feb 17, 1998	8.22	8.44	8.06	8.39
392	NASDAQ	ARTNA	Fri, Feb 13, 1998	8.44	8.56	8.33	8.33
391	NASDAQ	ARTNA	Thu, Feb 12, 1998	8.47	8.67	8.44	8.67
390	NASDAQ	ARTNA	Wed, Feb 11, 1998	8.67	8.67	8.67	8.67
389	NASDAQ	ARTNA	Tue, Feb 10, 1998	8.56	8.72	8.44	8.44
388	NASDAQ	ARTNA	Mon, Feb 9, 1998	8.67	8.78	8.67	8.78
387	NASDAQ	ARTNA	Fri, Feb 6, 1998	8.78	8.78	8.67	8.67
386	NASDAQ	ARTNA	Thu, Feb 5, 1998	8.67	8.67	8.67	8.67
385	NASDAQ	ARTNA	Wed, Feb 4, 1998	8.61	8.67	8.61	8.67
384	NASDAQ	ARTNA	Tue, Feb 3, 1998	8.56	8.78	8.44	8.78
383	NASDAQ	ARTNA	Mon, Feb 2, 1998	8.44	8.78	8.44	8.56
382	NASDAQ	ARTNA	Fri, Jan 30, 1998	8.72	8.78	8.61	8.78
381	NASDAQ	ARTNA	Thu, Jan 29, 1998	8.44	8.72	8.44	8.72
380	NASDAQ	ARTNA	Wed, Jan 28, 1998	8.61	8.67	8.61	8.67
379	NASDAQ	ARTNA	Tue, Jan 27, 1998	8.67	8.67	8.61	8.67
378	NASDAQ	ARTNA	Mon, Jan 26, 1998	8.56	8.56	8.44	8.44
377	NASDAQ	ARTNA	Fri, Jan 23, 1998	8.56	8.56	8.56	8.56
376	NASDAQ	ARTNA	Thu, Jan 22, 1998	8.50	8.61	8.50	8.61
375	NASDAQ	ARTNA	Tue, Jan 20, 1998	8.61	8.61	8.44	8.44
374	NASDAQ	ARTNA	Fri, Jan 16, 1998	8.39	8.61	8.39	8.61
373	NASDAQ	ARTNA	Thu, Jan 15, 1998	8.39	8.61	8.33	8.33
372	NASDAQ	ARTNA	Wed, Jan 14, 1998	8.61	8.61	8.61	8.61
371	NASDAQ	ARTNA	Tue, Jan 13, 1998	8.50	8.56	8.50	8.56
370	NASDAQ	ARTNA	Mon, Jan 12, 1998	8.33	8.50	8.33	8.44
369	NASDAQ	ARTNA	Fri, Jan 9, 1998	8.50	8.67	8.50	8.67
368	NASDAQ	ARTNA	Thu, Jan 8, 1998	8.67	8.67	8.67	8.67
367	NASDAQ	ARTNA	Wed, Jan 7, 1998	8.67	8.67	8.44	8.44
366	NASDAQ	ARTNA	Tue, Jan 6, 1998	8.44	8.44	8.39	8.39
365	NASDAQ	ARTNA	Mon, Jan 5, 1998	8.56	8.56	8.56	8.56
364	NASDAQ	ARTNA	Fri, Jan 2, 1998	8.33	8.33	8.33	8.33
363	NASDAQ	ARTNA	Wed, Dec 31, 1997	8.33	8.33	8.33	8.33
362	NASDAQ	ARTNA	Tue, Dec 30, 1997	8.33	8.44	8.33	8.33
361	NASDAQ	ARTNA	Mon, Dec 29, 1997	8.39	8.39	8.39	8.39
360	NASDAQ	ARTNA	Fri, Dec 26, 1997	8.44	8.44	8.44	8.44
359	NASDAQ	ARTNA	Wed, Dec 24, 1997	8.33	8.33	8.33	8.33
358	NASDAQ	ARTNA	Tue, Dec 23, 1997	8.42	8.42	8.42	8.42
357	NASDAQ	ARTNA	Fri, Dec 19, 1997	8.44	8.44	8.33	8.44
356	NASDAQ	ARTNA	Thu, Dec 18, 1997	8.22	8.22	8.22	8.22
355	NASDAQ	ARTNA	Wed, Dec 17, 1997	8.33	8.33	8.11	8.22
354	NASDAQ	ARTNA	Mon, Dec 15, 1997	8.44	8.44	8.44	8.44
353	NASDAQ	ARTNA	Fri, Dec 12, 1997	8.22	8.22	8.11	8.22
352	NASDAQ	ARTNA	Thu, Dec 11, 1997	8.17	8.33	8.17	8.33
351	NASDAQ	ARTNA	Wed, Dec 10, 1997	8.22	8.33	8.22	8.33
350	NASDAQ	ARTNA	Tue, Dec 9, 1997	8.17	8.22	8.17	8.22
349	NASDAQ	ARTNA	Mon, Dec 8, 1997	8.33	8.33	8.33	8.33
348	NASDAQ	ARTNA	Fri, Dec 5, 1997	8.06	8.33	8.06	8.22
347	NASDAQ	ARTNA	Thu, Dec 4, 1997	8.17	8.44	8.06	8.11
346	NASDAQ	ARTNA	Wed, Dec 3, 1997	8.22	8.22	8.11	8.11
345	NASDAQ	ARTNA	Tue, Dec 2, 1997	8.17	8.17	8.11	8.11
344	NASDAQ	ARTNA	Mon, Dec 1, 1997	8.22	8.22	8.17	8.17
343	NASDAQ	ARTNA	Fri, Nov 28, 1997	8.28	8.44	8.06	8.06
342	NASDAQ	ARTNA	Wed, Nov 26, 1997	8.44	8.44	8.06	8.17
341	NASDAQ	ARTNA	Tue, Nov 25, 1997	8.17	8.17	8.17	8.17
340	NASDAQ	ARTNA	Mon, Nov 24, 1997	8.11	8.28	8.00	8.06
339	NASDAQ	ARTNA	Fri, Nov 21, 1997	8.44	8.44	8.44	8.44
338	NASDAQ	ARTNA	Thu, Nov 20, 1997	8.22	8.22	8.17	8.17
337	NASDAQ	ARTNA	Wed, Nov 19, 1997	8.33	8.33	8.11	8.33
336	NASDAQ	ARTNA	Tue, Nov 18, 1997	8.11	8.33	8.11	8.33
335	NASDAQ	ARTNA	Mon, Nov 17, 1997	8.11	8.11	8.00	8.00
334	NASDAQ	ARTNA	Fri, Nov 14, 1997	8.00	8.00	8.00	8.00
333	NASDAQ	ARTNA	Thu, Nov 13, 1997	8.11	8.39	8.00	8.00
332	NASDAQ	ARTNA	Mon, Nov 10, 1997	8.11	8.11	8.11	8.11
331	NASDAQ	ARTNA	Fri, Nov 7, 1997	8.11	8.11	8.00	8.00
330	NASDAQ	ARTNA	Thu, Nov 6, 1997	8.22	8.22	8.11	8.11
329	NASDAQ	ARTNA	Tue, Nov 4, 1997	8.17	8.22	8.17	8.22
328	NASDAQ	ARTNA	Mon, Nov 3, 1997	8.11	8.11	8.11	8.11
327	NASDAQ	ARTNA	Fri, Oct 31, 1997	8.11	8.11	8.11	8.11
326	NASDAQ	ARTNA	Thu, Oct 30, 1997	8.06	8.22	8.06	8.11
325	NASDAQ	ARTNA	Wed, Oct 29, 1997	8.42	8.42	8.06	8.06
324	NASDAQ	ARTNA	Tue, Oct 28, 1997	8.06	8.42	8.06	8.11
323	NASDAQ	ARTNA	Mon, Oct 27, 1997	8.06	8.11	8.06	8.06
322	NASDAQ	ARTNA	Fri, Oct 24, 1997	8.06	8.28	8.06	8.28
321	NASDAQ	ARTNA	Thu, Oct 23, 1997	8.06	8.06	8.06	8.06
320	NASDAQ	ARTNA	Wed, Oct 22, 1997	8.06	8.06	8.06	8.06
319	NASDAQ	ARTNA	Tue, Oct 21, 1997	8.06	8.11	8.06	8.11
318	NASDAQ	ARTNA	Fri, Oct 17, 1997	8.33	8.33	8.11	8.11
317	NASDAQ	ARTNA	Thu, Oct 16, 1997	8.00	8.00	8.00	8.00
316	NASDAQ	ARTNA	Wed, Oct 15, 1997	8.39	8.39	8.39	8.39
315	NASDAQ	ARTNA	Tue, Oct 14, 1997	8.28	8.28	8.28	8.28
314	NASDAQ	ARTNA	Mon, Oct 13, 1997	8.33	8.42	8.06	8.24
313	NASDAQ	ARTNA	Fri, Oct 10, 1997	8.17	8.42	8.00	8.00
312	NASDAQ	ARTNA	Thu, Oct 9, 1997	8.39	8.39	8.39	8.39
311	NASDAQ	ARTNA	Wed, Oct 8, 1997	8.42	8.42	8.33	8.33
310	NASDAQ	ARTNA	Mon, Oct 6, 1997	8.28	8.28	8.00	8.00
309	NASDAQ	ARTNA	Fri, Oct 3, 1997	8.44	8.44	8.11	8.11
308	NASDAQ	ARTNA	Thu, Oct 2, 1997	8.44	8.44	8.11	8.28
307	NASDAQ	ARTNA	Wed, Oct 1, 1997	8.11	8.44	8.11	8.44
306	NASDAQ	ARTNA	Tue, Sep 30, 1997	8.22	8.22	8.22	8.22
305	NASDAQ	ARTNA	Mon, Sep 29, 1997	8.33	8.33	8.33	8.33
304	NASDAQ	ARTNA	Fri, Sep 26, 1997	8.11	8.44	8.11	8.33
303	NASDAQ	ARTNA	Thu, Sep 25, 1997	8.33	8.33	8.11	8.11
302	NASDAQ	ARTNA	Wed, Sep 24, 1997	8.33	8.33	8.11	8.11
301	NASDAQ	ARTNA	Tue, Sep 23, 1997	8.33	8.33	8.11	8.33
300	NASDAQ	ARTNA	Mon, Sep 22, 1997	8.11	8.11	8.11	8.11
299	NASDAQ	ARTNA	Fri, Sep 19, 1997	8.28	8.44	8.11	8.17
298	NASDAQ	ARTNA	Thu, Sep 18, 1997	8.33	8.33	8.28	8.33
297	NASDAQ	ARTNA	Wed, Sep 17, 1997	8.11	8.36	8.11	8.28
296	NASDAQ	ARTNA	Tue, Sep 16, 1997	8.11	8.11	8.11	8.11
295	NASDAQ	ARTNA	Mon, Sep 15, 1997	8.44	8.44	8.11	8.22
294	NASDAQ	ARTNA	Fri, Sep 12, 1997	8.11	8.44	8.11	8.44
293	NASDAQ	ARTNA	Thu, Sep 11, 1997	8.44	8.44	8.11	8.11
292	NASDAQ	ARTNA	Wed, Sep 10, 1997	8.11	8.22	8.11	8.22
291	NASDAQ	ARTNA	Mon, Sep 8, 1997	8.44	8.44	8.11	8.11
290	NASDAQ	ARTNA	Thu, Sep 4, 1997	8.00	8.22	8.00	8.22
289	NASDAQ	ARTNA	Wed, Sep 3, 1997	8.11	8.44	8.11	8.44
288	NASDAQ	ARTNA	Tue, Sep 2, 1997	8.00	8.22	8.00	8.22
287	NASDAQ	ARTNA	Fri, Aug 29, 1997	8.06	8.22	8.06	8.22
286	NASDAQ	ARTNA	Thu, Aug 28, 1997	8.06	8.22	8.06	8.22
285	NASDAQ	ARTNA	Tue, Aug 26, 1997	8.22	8.22	8.06	8.06
284	NASDAQ	ARTNA	Mon, Aug 25, 1997	8.17	8.22	8.06	8.22
283	NASDAQ	ARTNA	Fri, Aug 22, 1997	8.17	8.33	8.17	8.33
282	NASDAQ	ARTNA	Thu, Aug 21, 1997	8.33	8.33	8.17	8.17
281	NASDAQ	ARTNA	Wed, Aug 20, 1997	8.33	8.33	8.33	8.33
280	NASDAQ	ARTNA	Tue, Aug 19, 1997	8.22	8.22	8.11	8.22
279	NASDAQ	ARTNA	Mon, Aug 18, 1997	8.00	8.00	8.00	8.00
278	NASDAQ	ARTNA	Fri, Aug 15, 1997	8.00	8.00	8.00	8.00
277	NASDAQ	ARTNA	Thu, Aug 14, 1997	8.00	8.11	8.00	8.00
276	NASDAQ	ARTNA	Wed, Aug 13, 1997	8.00	8.00	8.00	8.00
275	NASDAQ	ARTNA	Tue, Aug 12, 1997	8.00	8.44	8.00	8.44
274	NASDAQ	ARTNA	Mon, Aug 11, 1997	8.44	8.44	8.00	8.00
273	NASDAQ	ARTNA	Fri, Aug 8, 1997	8.11	8.44	8.11	8.44
272	NASDAQ	ARTNA	Thu, Aug 7, 1997	8.33	8.33	8.11	8.11
271	NASDAQ	ARTNA	Wed, Aug 6, 1997	8.00	8.11	7.89	8.11
270	NASDAQ	ARTNA	Tue, Aug 5, 1997	8.11	8.11	8.11	8.11
269	NASDAQ	ARTNA	Mon, Aug 4, 1997	7.89	7.89	7.89	7.89
268	NASDAQ	ARTNA	Fri, Aug 1, 1997	8.11	8.11	7.89	7.89
267	NASDAQ	ARTNA	Thu, Jul 31, 1997	8.11	8.11	8.11	8.11
266	NASDAQ	ARTNA	Tue, Jul 29, 1997	7.89	7.89	7.89	7.89
265	NASDAQ	ARTNA	Mon, Jul 28, 1997	7.78	7.89	7.78	7.89
264	NASDAQ	ARTNA	Fri, Jul 25, 1997	8.00	8.00	8.00	8.00
263	NASDAQ	ARTNA	Thu, Jul 24, 1997	8.00	8.11	8.00	8.11
262	NASDAQ	ARTNA	Wed, Jul 23, 1997	8.00	8.00	8.00	8.00
261	NASDAQ	ARTNA	Tue, Jul 22, 1997	8.00	8.00	7.94	8.00
260	NASDAQ	ARTNA	Mon, Jul 21, 1997	8.11	8.11	8.11	8.11
259	NASDAQ	ARTNA	Fri, Jul 18, 1997	7.78	7.78	7.78	7.78
258	NASDAQ	ARTNA	Thu, Jul 17, 1997	8.00	8.00	7.78	7.78
257	NASDAQ	ARTNA	Wed, Jul 16, 1997	7.78	8.00	7.78	8.00
256	NASDAQ	ARTNA	Tue, Jul 15, 1997	8.00	8.00	7.78	8.00
255	NASDAQ	ARTNA	Mon, Jul 14, 1997	8.00	8.00	8.00	8.00
254	NASDAQ	ARTNA	Fri, Jul 11, 1997	8.00	8.00	7.78	8.00
253	NASDAQ	ARTNA	Thu, Jul 10, 1997	8.00	8.00	7.78	7.78
252	NASDAQ	ARTNA	Wed, Jul 9, 1997	8.00	8.00	8.00	8.00
251	NASDAQ	ARTNA	Tue, Jul 8, 1997	7.78	7.89	7.78	7.89
250	NASDAQ	ARTNA	Mon, Jul 7, 1997	8.00	8.00	8.00	8.00
249	NASDAQ	ARTNA	Wed, Jul 2, 1997	8.00	8.00	7.67	7.67
248	NASDAQ	ARTNA	Mon, Jun 30, 1997	7.78	7.89	7.67	7.89
247	NASDAQ	ARTNA	Fri, Jun 27, 1997	7.67	8.00	7.67	8.00
246	NASDAQ	ARTNA	Thu, Jun 26, 1997	8.00	8.00	8.00	8.00
245	NASDAQ	ARTNA	Wed, Jun 25, 1997	8.00	8.00	7.67	7.67
244	NASDAQ	ARTNA	Tue, Jun 24, 1997	7.56	7.72	7.56	7.67
243	NASDAQ	ARTNA	Mon, Jun 23, 1997	7.56	7.72	7.56	7.72
242	NASDAQ	ARTNA	Fri, Jun 20, 1997	7.56	7.56	7.56	7.56
241	NASDAQ	ARTNA	Wed, Jun 18, 1997	7.56	7.56	7.56	7.56
240	NASDAQ	ARTNA	Fri, Jun 13, 1997	7.78	7.78	7.78	7.78
239	NASDAQ	ARTNA	Thu, Jun 12, 1997	7.56	8.00	7.56	8.00
238	NASDAQ	ARTNA	Wed, Jun 11, 1997	7.67	7.89	7.56	7.78
237	NASDAQ	ARTNA	Tue, Jun 10, 1997	7.67	7.83	7.56	7.83
236	NASDAQ	ARTNA	Mon, Jun 9, 1997	7.89	7.89	7.89	7.89
235	NASDAQ	ARTNA	Fri, Jun 6, 1997	7.89	7.89	7.89	7.89
234	NASDAQ	ARTNA	Thu, Jun 5, 1997	7.67	7.67	7.61	7.64
233	NASDAQ	ARTNA	Wed, Jun 4, 1997	7.78	7.89	7.78	7.89
232	NASDAQ	ARTNA	Tue, Jun 3, 1997	7.67	7.67	7.56	7.56
231	NASDAQ	ARTNA	Mon, Jun 2, 1997	7.67	7.67	7.67	7.67
230	NASDAQ	ARTNA	Fri, May 30, 1997	7.67	7.67	7.67	7.67
229	NASDAQ	ARTNA	Wed, May 28, 1997	8.00	8.00	7.67	7.67
228	NASDAQ	ARTNA	Fri, May 23, 1997	8.00	8.00	8.00	8.00
227	NASDAQ	ARTNA	Thu, May 22, 1997	8.00	8.00	8.00	8.00
226	NASDAQ	ARTNA	Wed, May 21, 1997	8.00	8.00	8.00	8.00
225	NASDAQ	ARTNA	Tue, May 20, 1997	8.00	8.00	8.00	8.00
224	NASDAQ	ARTNA	Mon, May 19, 1997	7.89	7.89	7.67	7.67
223	NASDAQ	ARTNA	Fri, May 16, 1997	8.00	8.00	7.78	7.78
222	NASDAQ	ARTNA	Thu, May 15, 1997	8.00	8.00	7.67	7.67
221	NASDAQ	ARTNA	Wed, May 14, 1997	8.00	8.00	8.00	8.00
220	NASDAQ	ARTNA	Tue, May 13, 1997	7.67	8.00	7.67	7.67
219	NASDAQ	ARTNA	Mon, May 12, 1997	7.89	7.89	7.89	7.89
218	NASDAQ	ARTNA	Fri, May 9, 1997	7.83	8.00	7.67	8.00
217	NASDAQ	ARTNA	Mon, May 5, 1997	7.67	8.00	7.67	8.00
216	NASDAQ	ARTNA	Fri, May 2, 1997	8.00	8.00	8.00	8.00
215	NASDAQ	ARTNA	Wed, Apr 30, 1997	7.89	7.89	7.89	7.89
214	NASDAQ	ARTNA	Tue, Apr 29, 1997	7.78	7.78	7.78	7.78
213	NASDAQ	ARTNA	Fri, Apr 25, 1997	7.67	7.67	7.67	7.67
212	NASDAQ	ARTNA	Thu, Apr 24, 1997	7.83	8.00	7.83	7.94
211	NASDAQ	ARTNA	Wed, Apr 23, 1997	7.89	7.89	7.89	7.89
210	NASDAQ	ARTNA	Tue, Apr 22, 1997	8.00	8.00	7.67	8.00
209	NASDAQ	ARTNA	Mon, Apr 21, 1997	7.83	8.00	7.83	8.00
208	NASDAQ	ARTNA	Fri, Apr 18, 1997	8.00	8.00	8.00	8.00
207	NASDAQ	ARTNA	Thu, Apr 17, 1997	7.78	8.00	7.78	8.00
206	NASDAQ	ARTNA	Wed, Apr 16, 1997	8.11	8.11	8.11	8.11
205	NASDAQ	ARTNA	Tue, Apr 15, 1997	8.00	8.11	8.00	8.00
204	NASDAQ	ARTNA	Mon, Apr 14, 1997	7.67	8.00	7.67	7.83
203	NASDAQ	ARTNA	Fri, Apr 11, 1997	8.00	8.00	7.67	8.00
202	NASDAQ	ARTNA	Thu, Apr 10, 1997	7.89	7.89	7.89	7.89
201	NASDAQ	ARTNA	Tue, Apr 8, 1997	7.67	7.83	7.67	7.78
200	NASDAQ	ARTNA	Mon, Apr 7, 1997	7.67	7.67	7.67	7.67
199	NASDAQ	ARTNA	Fri, Apr 4, 1997	7.67	7.76	7.67	7.76
198	NASDAQ	ARTNA	Thu, Apr 3, 1997	7.78	7.78	7.78	7.78
197	NASDAQ	ARTNA	Wed, Apr 2, 1997	7.67	7.89	7.67	7.67
196	NASDAQ	ARTNA	Mon, Mar 31, 1997	7.83	7.89	7.83	7.89
195	NASDAQ	ARTNA	Wed, Mar 26, 1997	8.00	8.00	7.83	7.83
194	NASDAQ	ARTNA	Tue, Mar 25, 1997	7.83	7.83	7.78	7.78
193	NASDAQ	ARTNA	Mon, Mar 24, 1997	7.94	7.94	7.78	7.78
192	NASDAQ	ARTNA	Fri, Mar 21, 1997	7.94	7.94	7.78	7.78
191	NASDAQ	ARTNA	Thu, Mar 20, 1997	7.78	8.11	7.78	7.78
190	NASDAQ	ARTNA	Wed, Mar 19, 1997	7.78	8.11	7.78	7.94
189	NASDAQ	ARTNA	Tue, Mar 18, 1997	7.78	7.83	7.78	7.83
188	NASDAQ	ARTNA	Mon, Mar 17, 1997	7.78	7.78	7.78	7.78
187	NASDAQ	ARTNA	Fri, Mar 14, 1997	7.78	8.00	7.78	8.00
186	NASDAQ	ARTNA	Thu, Mar 13, 1997	7.89	7.89	7.89	7.89
185	NASDAQ	ARTNA	Wed, Mar 12, 1997	7.89	7.89	7.89	7.89
184	NASDAQ	ARTNA	Tue, Mar 11, 1997	8.00	8.00	8.00	8.00
183	NASDAQ	ARTNA	Mon, Mar 10, 1997	7.89	7.89	7.78	7.78
182	NASDAQ	ARTNA	Fri, Mar 7, 1997	8.00	8.00	7.67	7.67
181	NASDAQ	ARTNA	Thu, Mar 6, 1997	7.89	7.89	7.89	7.89
180	NASDAQ	ARTNA	Wed, Mar 5, 1997	7.89	7.89	7.67	7.67
179	NASDAQ	ARTNA	Tue, Mar 4, 1997	7.89	7.89	7.89	7.89
178	NASDAQ	ARTNA	Mon, Mar 3, 1997	7.89	7.89	7.56	7.56
177	NASDAQ	ARTNA	Fri, Feb 28, 1997	7.56	7.89	7.56	7.89
176	NASDAQ	ARTNA	Thu, Feb 27, 1997	7.56	7.56	7.56	7.56
175	NASDAQ	ARTNA	Tue, Feb 25, 1997	7.78	7.89	7.56	7.56
174	NASDAQ	ARTNA	Mon, Feb 24, 1997	7.67	7.72	7.44	7.50
173	NASDAQ	ARTNA	Fri, Feb 21, 1997	7.56	7.83	7.56	7.83
172	NASDAQ	ARTNA	Thu, Feb 20, 1997	7.56	7.56	7.56	7.56
171	NASDAQ	ARTNA	Wed, Feb 19, 1997	7.56	7.56	7.56	7.56
170	NASDAQ	ARTNA	Tue, Feb 18, 1997	7.89	7.89	7.67	7.67
169	NASDAQ	ARTNA	Fri, Feb 14, 1997	7.89	7.89	7.56	7.78
168	NASDAQ	ARTNA	Wed, Feb 12, 1997	7.67	7.69	7.67	7.69
167	NASDAQ	ARTNA	Tue, Feb 11, 1997	8.11	8.11	7.67	7.89
166	NASDAQ	ARTNA	Mon, Feb 10, 1997	8.00	8.11	7.78	7.83
165	NASDAQ	ARTNA	Fri, Feb 7, 1997	7.89	8.00	7.89	7.94
164	NASDAQ	ARTNA	Thu, Feb 6, 1997	7.78	7.78	7.78	7.78
163	NASDAQ	ARTNA	Wed, Feb 5, 1997	7.78	7.78	7.56	7.78
162	NASDAQ	ARTNA	Tue, Feb 4, 1997	7.78	7.78	7.78	7.78
161	NASDAQ	ARTNA	Mon, Feb 3, 1997	7.56	7.56	7.56	7.56
160	NASDAQ	ARTNA	Fri, Jan 31, 1997	7.67	7.78	7.44	7.44
159	NASDAQ	ARTNA	Thu, Jan 30, 1997	7.67	7.78	7.44	7.78
158	NASDAQ	ARTNA	Wed, Jan 29, 1997	7.67	7.67	7.44	7.67
157	NASDAQ	ARTNA	Tue, Jan 28, 1997	7.56	7.56	7.44	7.44
156	NASDAQ	ARTNA	Mon, Jan 27, 1997	7.67	7.67	7.44	7.56
155	NASDAQ	ARTNA	Fri, Jan 24, 1997	7.67	7.67	7.67	7.67
154	NASDAQ	ARTNA	Thu, Jan 23, 1997	7.22	7.44	7.22	7.44
153	NASDAQ	ARTNA	Wed, Jan 22, 1997	7.67	7.67	7.56	7.67
152	NASDAQ	ARTNA	Tue, Jan 21, 1997	7.22	7.46	7.22	7.44
151	NASDAQ	ARTNA	Mon, Jan 20, 1997	7.67	7.67	7.67	7.67
150	NASDAQ	ARTNA	Fri, Jan 17, 1997	7.22	7.67	7.22	7.22
149	NASDAQ	ARTNA	Wed, Jan 15, 1997	7.22	7.56	7.22	7.56
148	NASDAQ	ARTNA	Tue, Jan 14, 1997	7.56	7.56	7.28	7.56
147	NASDAQ	ARTNA	Fri, Jan 10, 1997	7.56	7.56	7.22	7.44
146	NASDAQ	ARTNA	Wed, Jan 8, 1997	7.44	7.44	7.44	7.44
145	NASDAQ	ARTNA	Tue, Jan 7, 1997	7.56	7.56	7.56	7.56
144	NASDAQ	ARTNA	Mon, Jan 6, 1997	7.22	7.56	7.22	7.22
143	NASDAQ	ARTNA	Fri, Jan 3, 1997	7.33	7.56	7.22	7.28
142	NASDAQ	ARTNA	Thu, Jan 2, 1997	7.33	7.44	7.22	7.22
141	NASDAQ	ARTNA	Mon, Dec 30, 1996	7.56	7.56	7.39	7.44
140	NASDAQ	ARTNA	Fri, Dec 27, 1996	7.56	7.56	7.56	7.56
139	NASDAQ	ARTNA	Thu, Dec 26, 1996	7.22	7.56	7.22	7.56
138	NASDAQ	ARTNA	Tue, Dec 24, 1996	7.11	7.56	7.11	7.56
137	NASDAQ	ARTNA	Mon, Dec 23, 1996	7.56	7.56	7.11	7.39
136	NASDAQ	ARTNA	Fri, Dec 20, 1996	7.56	7.56	7.56	7.56
135	NASDAQ	ARTNA	Thu, Dec 19, 1996	7.22	7.22	7.22	7.22
134	NASDAQ	ARTNA	Wed, Dec 18, 1996	7.22	7.56	7.22	7.56
133	NASDAQ	ARTNA	Tue, Dec 17, 1996	7.28	7.56	7.28	7.56
132	NASDAQ	ARTNA	Fri, Dec 13, 1996	7.17	7.17	7.17	7.17
131	NASDAQ	ARTNA	Thu, Dec 12, 1996	7.56	7.56	7.22	7.56
130	NASDAQ	ARTNA	Mon, Dec 9, 1996	7.22	7.44	7.22	7.44
129	NASDAQ	ARTNA	Fri, Dec 6, 1996	7.11	7.44	7.11	7.44
128	NASDAQ	ARTNA	Thu, Dec 5, 1996	7.44	7.44	7.44	7.44
127	NASDAQ	ARTNA	Wed, Dec 4, 1996	7.00	7.33	7.00	7.33
126	NASDAQ	ARTNA	Tue, Dec 3, 1996	7.44	7.44	7.44	7.44
125	NASDAQ	ARTNA	Mon, Dec 2, 1996	7.00	7.00	7.00	7.00
124	NASDAQ	ARTNA	Fri, Nov 29, 1996	7.00	7.00	7.00	7.00
123	NASDAQ	ARTNA	Tue, Nov 26, 1996	7.33	7.33	7.00	7.17
122	NASDAQ	ARTNA	Mon, Nov 25, 1996	7.33	7.33	7.22	7.33
121	NASDAQ	ARTNA	Fri, Nov 22, 1996	7.11	7.17	7.06	7.17
120	NASDAQ	ARTNA	Thu, Nov 21, 1996	7.00	7.33	7.00	7.11
119	NASDAQ	ARTNA	Wed, Nov 20, 1996	7.00	7.33	7.00	7.33
118	NASDAQ	ARTNA	Tue, Nov 19, 1996	7.00	7.00	7.00	7.00
117	NASDAQ	ARTNA	Mon, Nov 18, 1996	7.33	7.33	7.33	7.33
116	NASDAQ	ARTNA	Fri, Nov 15, 1996	7.00	7.33	7.00	7.33
115	NASDAQ	ARTNA	Thu, Nov 14, 1996	7.00	7.33	7.00	7.33
114	NASDAQ	ARTNA	Wed, Nov 13, 1996	7.33	7.33	7.33	7.33
113	NASDAQ	ARTNA	Tue, Nov 12, 1996	7.00	7.33	7.00	7.33
112	NASDAQ	ARTNA	Mon, Nov 11, 1996	7.33	7.33	7.00	7.11
111	NASDAQ	ARTNA	Fri, Nov 8, 1996	7.28	7.28	7.00	7.06
110	NASDAQ	ARTNA	Thu, Nov 7, 1996	7.00	7.00	7.00	7.00
109	NASDAQ	ARTNA	Wed, Nov 6, 1996	7.00	7.06	7.00	7.06
108	NASDAQ	ARTNA	Tue, Nov 5, 1996	7.06	7.33	7.06	7.33
107	NASDAQ	ARTNA	Mon, Nov 4, 1996	7.33	7.33	7.33	7.33
106	NASDAQ	ARTNA	Fri, Nov 1, 1996	7.31	7.31	7.31	7.31
105	NASDAQ	ARTNA	Thu, Oct 31, 1996	7.33	7.33	7.00	7.00
104	NASDAQ	ARTNA	Wed, Oct 30, 1996	7.17	7.17	7.17	7.17
103	NASDAQ	ARTNA	Tue, Oct 29, 1996	7.00	7.33	7.00	7.33
102	NASDAQ	ARTNA	Mon, Oct 28, 1996	7.00	7.00	7.00	7.00
101	NASDAQ	ARTNA	Fri, Oct 25, 1996	7.00	7.00	7.00	7.00
100	NASDAQ	ARTNA	Thu, Oct 24, 1996	7.22	7.22	7.22	7.22
99	NASDAQ	ARTNA	Tue, Oct 22, 1996	7.00	7.00	7.00	7.00
98	NASDAQ	ARTNA	Mon, Oct 21, 1996	7.00	7.00	7.00	7.00
97	NASDAQ	ARTNA	Fri, Oct 18, 1996	7.00	7.11	7.00	7.11
96	NASDAQ	ARTNA	Thu, Oct 17, 1996	7.11	7.44	7.11	7.44
95	NASDAQ	ARTNA	Wed, Oct 16, 1996	7.22	7.44	7.22	7.44
94	NASDAQ	ARTNA	Tue, Oct 15, 1996	7.00	7.44	7.00	7.22
93	NASDAQ	ARTNA	Mon, Oct 14, 1996	7.44	7.44	7.44	7.44
92	NASDAQ	ARTNA	Fri, Oct 11, 1996	7.22	7.22	7.22	7.22
91	NASDAQ	ARTNA	Wed, Oct 9, 1996	7.00	7.44	7.00	7.44
90	NASDAQ	ARTNA	Tue, Oct 8, 1996	7.44	7.44	7.22	7.33
89	NASDAQ	ARTNA	Mon, Oct 7, 1996	7.11	7.44	7.11	7.44
88	NASDAQ	ARTNA	Fri, Oct 4, 1996	7.44	7.44	7.22	7.22
87	NASDAQ	ARTNA	Thu, Oct 3, 1996	7.44	7.44	7.44	7.44
86	NASDAQ	ARTNA	Wed, Oct 2, 1996	7.22	7.44	7.00	7.06
85	NASDAQ	ARTNA	Tue, Oct 1, 1996	7.00	7.22	7.00	7.22
84	NASDAQ	ARTNA	Fri, Sep 27, 1996	7.00	7.39	7.00	7.22
83	NASDAQ	ARTNA	Thu, Sep 26, 1996	7.11	7.33	7.11	7.11
82	NASDAQ	ARTNA	Wed, Sep 25, 1996	7.00	7.00	7.00	7.00
81	NASDAQ	ARTNA	Tue, Sep 24, 1996	7.00	7.11	7.00	7.00
80	NASDAQ	ARTNA	Mon, Sep 23, 1996	7.33	7.33	7.11	7.11
79	NASDAQ	ARTNA	Fri, Sep 20, 1996	7.06	7.11	7.00	7.11
78	NASDAQ	ARTNA	Thu, Sep 19, 1996	7.11	7.11	6.89	6.89
77	NASDAQ	ARTNA	Tue, Sep 17, 1996	6.89	7.11	6.89	7.06
76	NASDAQ	ARTNA	Mon, Sep 16, 1996	6.89	7.11	6.89	7.11
75	NASDAQ	ARTNA	Fri, Sep 13, 1996	6.89	7.11	6.89	7.11
74	NASDAQ	ARTNA	Thu, Sep 12, 1996	7.11	7.11	7.11	7.11
73	NASDAQ	ARTNA	Wed, Sep 11, 1996	6.89	7.11	6.89	7.11
72	NASDAQ	ARTNA	Tue, Sep 10, 1996	7.11	7.11	6.89	7.00
71	NASDAQ	ARTNA	Mon, Sep 9, 1996	6.89	7.11	6.89	7.11
70	NASDAQ	ARTNA	Fri, Sep 6, 1996	6.89	7.17	6.89	7.11
69	NASDAQ	ARTNA	Thu, Sep 5, 1996	7.00	7.11	7.00	7.11
68	NASDAQ	ARTNA	Wed, Sep 4, 1996	7.11	7.11	7.00	7.00
67	NASDAQ	ARTNA	Fri, Aug 30, 1996	7.11	7.11	6.89	6.89
66	NASDAQ	ARTNA	Thu, Aug 29, 1996	7.22	7.22	6.89	7.11
65	NASDAQ	ARTNA	Wed, Aug 28, 1996	7.11	7.22	7.06	7.22
64	NASDAQ	ARTNA	Tue, Aug 27, 1996	7.22	7.22	7.00	7.11
63	NASDAQ	ARTNA	Mon, Aug 26, 1996	7.22	7.22	7.00	7.22
62	NASDAQ	ARTNA	Fri, Aug 23, 1996	7.22	7.22	7.00	7.22
61	NASDAQ	ARTNA	Thu, Aug 22, 1996	7.00	7.22	7.00	7.22
60	NASDAQ	ARTNA	Wed, Aug 21, 1996	7.22	7.22	7.00	7.22
59	NASDAQ	ARTNA	Tue, Aug 20, 1996	7.22	7.22	7.00	7.06
58	NASDAQ	ARTNA	Mon, Aug 19, 1996	7.22	7.22	6.89	6.89
57	NASDAQ	ARTNA	Fri, Aug 16, 1996	7.22	7.22	6.89	7.22
56	NASDAQ	ARTNA	Thu, Aug 15, 1996	7.22	7.22	7.22	7.22
55	NASDAQ	ARTNA	Tue, Aug 13, 1996	7.06	7.06	6.89	6.89
54	NASDAQ	ARTNA	Mon, Aug 12, 1996	6.89	7.11	6.89	7.11
53	NASDAQ	ARTNA	Fri, Aug 9, 1996	7.11	7.11	6.89	7.11
52	NASDAQ	ARTNA	Thu, Aug 8, 1996	6.89	6.89	6.89	6.89
51	NASDAQ	ARTNA	Wed, Aug 7, 1996	7.11	7.11	6.78	6.89
50	NASDAQ	ARTNA	Tue, Aug 6, 1996	7.00	7.11	6.78	7.11
49	NASDAQ	ARTNA	Mon, Aug 5, 1996	6.89	7.00	6.89	6.89
48	NASDAQ	ARTNA	Fri, Aug 2, 1996	6.94	7.00	6.67	7.00
47	NASDAQ	ARTNA	Thu, Aug 1, 1996	7.00	7.00	6.83	7.00
46	NASDAQ	ARTNA	Wed, Jul 31, 1996	7.00	7.00	6.67	6.67
45	NASDAQ	ARTNA	Tue, Jul 30, 1996	6.89	7.11	6.67	6.67
44	NASDAQ	ARTNA	Mon, Jul 29, 1996	6.78	6.78	6.78	6.78
43	NASDAQ	ARTNA	Fri, Jul 26, 1996	6.67	6.78	6.67	6.78
42	NASDAQ	ARTNA	Thu, Jul 25, 1996	7.06	7.11	6.67	7.00
41	NASDAQ	ARTNA	Wed, Jul 24, 1996	7.00	7.00	6.67	7.00
40	NASDAQ	ARTNA	Tue, Jul 23, 1996	7.00	7.00	6.67	7.00
39	NASDAQ	ARTNA	Mon, Jul 22, 1996	7.00	7.00	6.67	6.78
38	NASDAQ	ARTNA	Fri, Jul 19, 1996	7.00	7.00	6.72	6.94
37	NASDAQ	ARTNA	Thu, Jul 18, 1996	7.00	7.00	6.67	7.00
36	NASDAQ	ARTNA	Wed, Jul 17, 1996	6.89	7.00	6.67	6.78
35	NASDAQ	ARTNA	Tue, Jul 16, 1996	6.72	6.89	6.67	6.67
34	NASDAQ	ARTNA	Mon, Jul 15, 1996	6.78	6.89	6.67	6.67
33	NASDAQ	ARTNA	Fri, Jul 12, 1996	6.89	6.89	6.67	6.78
32	NASDAQ	ARTNA	Thu, Jul 11, 1996	6.72	6.89	6.56	6.67
31	NASDAQ	ARTNA	Wed, Jul 10, 1996	6.67	6.78	6.67	6.67
30	NASDAQ	ARTNA	Tue, Jul 9, 1996	6.78	6.78	6.44	6.50
29	NASDAQ	ARTNA	Mon, Jul 8, 1996	6.67	6.67	6.44	6.44
28	NASDAQ	ARTNA	Wed, Jul 3, 1996	6.67	6.67	6.56	6.56
27	NASDAQ	ARTNA	Tue, Jul 2, 1996	6.44	6.67	6.44	6.50
26	NASDAQ	ARTNA	Mon, Jul 1, 1996	6.56	6.56	6.44	6.44
25	NASDAQ	ARTNA	Fri, Jun 28, 1996	6.44	6.67	6.44	6.56
24	NASDAQ	ARTNA	Thu, Jun 27, 1996	6.44	6.44	6.44	6.44
23	NASDAQ	ARTNA	Wed, Jun 26, 1996	6.44	6.44	6.44	6.44
22	NASDAQ	ARTNA	Tue, Jun 25, 1996	6.44	6.67	6.44	6.67
21	NASDAQ	ARTNA	Mon, Jun 24, 1996	6.44	6.67	6.44	6.44
20	NASDAQ	ARTNA	Fri, Jun 21, 1996	6.44	6.44	6.44	6.44
19	NASDAQ	ARTNA	Thu, Jun 20, 1996	6.44	6.67	6.44	6.67
18	NASDAQ	ARTNA	Wed, Jun 19, 1996	6.78	6.78	6.44	6.72
17	NASDAQ	ARTNA	Tue, Jun 18, 1996	6.67	6.78	6.67	6.78
16	NASDAQ	ARTNA	Mon, Jun 17, 1996	6.44	6.67	6.44	6.67
15	NASDAQ	ARTNA	Fri, Jun 14, 1996	6.44	6.44	6.44	6.44
14	NASDAQ	ARTNA	Thu, Jun 13, 1996	6.78	6.78	6.75	6.78
13	NASDAQ	ARTNA	Wed, Jun 12, 1996	6.44	6.67	6.44	6.67
12	NASDAQ	ARTNA	Tue, Jun 11, 1996	6.44	6.78	6.44	6.44
11	NASDAQ	ARTNA	Mon, Jun 10, 1996	6.67	6.78	6.67	6.67
10	NASDAQ	ARTNA	Fri, Jun 7, 1996	6.67	6.67	6.67	6.67
9	NASDAQ	ARTNA	Thu, Jun 6, 1996	6.78	6.78	6.67	6.67
8	NASDAQ	ARTNA	Wed, Jun 5, 1996	6.67	6.67	6.67	6.67
7	NASDAQ	ARTNA	Tue, Jun 4, 1996	6.67	6.78	6.67	6.67
6	NASDAQ	ARTNA	Mon, Jun 3, 1996	6.89	6.89	6.67	6.67
5	NASDAQ	ARTNA	Fri, May 31, 1996	6.67	6.89	6.61	6.67
4	NASDAQ	ARTNA	Thu, May 30, 1996	6.67	6.89	6.67	6.89
3	NASDAQ	ARTNA	Wed, May 29, 1996	6.89	6.89	6.67	6.67
2	NASDAQ	ARTNA	Tue, May 28, 1996	6.67	6.78	6.67	6.78
1	NASDAQ	ARTNA	Fri, May 24, 1996	6.67	7.11	6.67	6.67
#	Exchange	Symbol	Date	Open	High	Low	Close

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