Below are the 512 trading days of historical prices for PRTC.
# | Exchange | Symbol | Date | Open | High | Low | Close | 512 | NASDAQ | PRTC | Wed, Jan 18, 2023 | 33.37 | 33.37 | 33.37 | 33.37 | 511 | NASDAQ | PRTC | Tue, Jan 17, 2023 | 29.54 | 29.54 | 29.54 | 29.54 | 510 | NASDAQ | PRTC | Fri, Jan 13, 2023 | 0.00 | 0.00 | 0.00 | 0.00 | 509 | NASDAQ | PRTC | Thu, Jan 12, 2023 | 0.00 | 0.00 | 0.00 | 0.00 | 508 | NASDAQ | PRTC | Wed, Jan 11, 2023 | 29.49 | 29.49 | 29.49 | 29.49 | 507 | NASDAQ | PRTC | Tue, Jan 10, 2023 | 0.00 | 0.00 | 0.00 | 0.00 | 506 | NASDAQ | PRTC | Mon, Jan 9, 2023 | 0.00 | 0.00 | 0.00 | 0.00 | 505 | NASDAQ | PRTC | Fri, Jan 6, 2023 | 0.00 | 0.00 | 0.00 | 0.00 | 504 | NASDAQ | PRTC | Thu, Jan 5, 2023 | 0.00 | 0.00 | 0.00 | 0.00 | 503 | NASDAQ | PRTC | Wed, Jan 4, 2023 | 0.00 | 0.00 | 0.00 | 0.00 | 502 | NASDAQ | PRTC | Tue, Jan 3, 2023 | 0.00 | 0.00 | 0.00 | 0.00 | 501 | NASDAQ | PRTC | Fri, Dec 30, 2022 | 31.90 | 31.90 | 31.90 | 31.90 | 500 | NASDAQ | PRTC | Wed, Dec 21, 2022 | 32.77 | 32.77 | 32.77 | 32.77 | 499 | NASDAQ | PRTC | Mon, Dec 19, 2022 | 32.99 | 32.99 | 32.13 | 32.13 | 498 | NASDAQ | PRTC | Fri, Dec 16, 2022 | 33.33 | 33.33 | 30.60 | 30.60 | 497 | NASDAQ | PRTC | Wed, Dec 14, 2022 | 33.33 | 36.32 | 33.33 | 36.12 | 496 | NASDAQ | PRTC | Tue, Dec 13, 2022 | 34.88 | 34.88 | 34.60 | 34.63 | 495 | NASDAQ | PRTC | Mon, Dec 12, 2022 | 33.90 | 33.90 | 33.90 | 33.90 | 494 | NASDAQ | PRTC | Fri, Dec 9, 2022 | 38.51 | 38.51 | 38.51 | 38.51 | 493 | NASDAQ | PRTC | Thu, Dec 8, 2022 | 32.75 | 36.70 | 32.75 | 35.85 | 492 | NASDAQ | PRTC | Wed, Dec 7, 2022 | 33.00 | 33.00 | 33.00 | 33.00 | 491 | NASDAQ | PRTC | Tue, Dec 6, 2022 | 36.00 | 38.00 | 34.90 | 34.99 | 490 | NASDAQ | PRTC | Mon, Dec 5, 2022 | 36.03 | 36.03 | 36.03 | 36.03 | 489 | NASDAQ | PRTC | Fri, Dec 2, 2022 | 34.00 | 38.90 | 33.88 | 36.90 | 488 | NASDAQ | PRTC | Thu, Dec 1, 2022 | 33.76 | 38.20 | 33.50 | 34.00 | 487 | NASDAQ | PRTC | Wed, Nov 30, 2022 | 33.00 | 35.63 | 33.00 | 35.00 | 486 | NASDAQ | PRTC | Tue, Nov 29, 2022 | 32.00 | 34.00 | 32.00 | 34.00 | 485 | NASDAQ | PRTC | Mon, Nov 28, 2022 | 32.00 | 33.00 | 31.50 | 32.00 | 484 | NASDAQ | PRTC | Wed, Nov 23, 2022 | 31.30 | 31.30 | 29.97 | 29.97 | 483 | NASDAQ | PRTC | Tue, Nov 22, 2022 | 30.30 | 30.30 | 28.65 | 29.87 | 482 | NASDAQ | PRTC | Mon, Nov 21, 2022 | 30.05 | 30.39 | 29.95 | 30.39 | 481 | NASDAQ | PRTC | Fri, Nov 18, 2022 | 27.50 | 30.40 | 27.50 | 29.00 | 480 | NASDAQ | PRTC | Wed, Nov 16, 2022 | 28.79 | 29.30 | 27.50 | 27.50 | 479 | NASDAQ | PRTC | Tue, Nov 15, 2022 | 30.02 | 33.01 | 27.37 | 27.37 | 478 | NASDAQ | PRTC | Fri, Nov 11, 2022 | 28.47 | 29.70 | 28.47 | 29.07 | 477 | NASDAQ | PRTC | Thu, Nov 10, 2022 | 28.01 | 28.01 | 28.01 | 28.01 | 476 | NASDAQ | PRTC | Tue, Nov 8, 2022 | 27.95 | 27.95 | 27.95 | 27.95 | 475 | NASDAQ | PRTC | Mon, Nov 7, 2022 | 27.85 | 27.94 | 27.58 | 27.58 | 474 | NASDAQ | PRTC | Fri, Nov 4, 2022 | 28.15 | 28.84 | 28.06 | 28.06 | 473 | NASDAQ | PRTC | Wed, Nov 2, 2022 | 28.20 | 29.00 | 28.20 | 28.99 | 472 | NASDAQ | PRTC | Mon, Oct 31, 2022 | 29.80 | 31.45 | 27.03 | 28.02 | 471 | NASDAQ | PRTC | Fri, Oct 28, 2022 | 26.70 | 32.00 | 26.54 | 30.39 | 470 | NASDAQ | PRTC | Thu, Oct 27, 2022 | 28.40 | 28.40 | 28.40 | 28.40 | 469 | NASDAQ | PRTC | Wed, Oct 26, 2022 | 27.00 | 27.68 | 26.60 | 26.91 | 468 | NASDAQ | PRTC | Tue, Oct 25, 2022 | 27.00 | 27.00 | 26.99 | 26.99 | 467 | NASDAQ | PRTC | Mon, Oct 24, 2022 | 28.40 | 31.01 | 26.50 | 26.50 | 466 | NASDAQ | PRTC | Thu, Oct 20, 2022 | 27.59 | 29.53 | 27.00 | 27.00 | 465 | NASDAQ | PRTC | Wed, Oct 19, 2022 | 27.00 | 27.00 | 27.00 | 27.00 | 464 | NASDAQ | PRTC | Tue, Oct 18, 2022 | 25.99 | 28.59 | 25.99 | 26.54 | 463 | NASDAQ | PRTC | Mon, Oct 17, 2022 | 26.95 | 28.84 | 25.51 | 25.51 | 462 | NASDAQ | PRTC | Fri, Oct 14, 2022 | 24.22 | 24.22 | 24.09 | 24.09 | 461 | NASDAQ | PRTC | Wed, Oct 12, 2022 | 24.80 | 26.00 | 24.50 | 25.40 | 460 | NASDAQ | PRTC | Tue, Oct 11, 2022 | 24.00 | 24.60 | 23.50 | 24.50 | 459 | NASDAQ | PRTC | Mon, Oct 10, 2022 | 25.59 | 25.83 | 24.38 | 24.49 | 458 | NASDAQ | PRTC | Fri, Oct 7, 2022 | 25.13 | 26.89 | 23.50 | 23.50 | 457 | NASDAQ | PRTC | Thu, Oct 6, 2022 | 27.50 | 36.02 | 27.20 | 31.01 | 456 | NASDAQ | PRTC | Wed, Oct 5, 2022 | 25.75 | 26.88 | 24.86 | 26.05 | 455 | NASDAQ | PRTC | Tue, Oct 4, 2022 | 27.00 | 27.00 | 27.00 | 27.00 | 454 | NASDAQ | PRTC | Mon, Oct 3, 2022 | 26.71 | 27.00 | 26.71 | 27.00 | 453 | NASDAQ | PRTC | Fri, Sep 30, 2022 | 25.42 | 27.00 | 25.42 | 27.00 | 452 | NASDAQ | PRTC | Thu, Sep 29, 2022 | 26.07 | 28.49 | 25.40 | 27.14 | 451 | NASDAQ | PRTC | Wed, Sep 28, 2022 | 25.60 | 26.50 | 25.59 | 26.50 | 450 | NASDAQ | PRTC | Tue, Sep 27, 2022 | 24.00 | 24.50 | 24.00 | 24.50 | 449 | NASDAQ | PRTC | Mon, Sep 26, 2022 | 22.27 | 22.27 | 22.27 | 22.27 | 448 | NASDAQ | PRTC | Fri, Sep 23, 2022 | 23.95 | 23.95 | 22.10 | 22.11 | 447 | NASDAQ | PRTC | Thu, Sep 22, 2022 | 24.50 | 24.50 | 24.00 | 24.00 | 446 | NASDAQ | PRTC | Wed, Sep 21, 2022 | 27.50 | 27.71 | 23.50 | 25.70 | 445 | NASDAQ | PRTC | Tue, Sep 20, 2022 | 28.00 | 29.20 | 28.00 | 29.20 | 444 | NASDAQ | PRTC | Mon, Sep 19, 2022 | 29.00 | 29.00 | 27.50 | 27.72 | 443 | NASDAQ | PRTC | Fri, Sep 16, 2022 | 29.59 | 30.20 | 28.60 | 28.60 | 442 | NASDAQ | PRTC | Thu, Sep 15, 2022 | 29.38 | 30.10 | 29.29 | 29.39 | 441 | NASDAQ | PRTC | Fri, Sep 9, 2022 | 29.38 | 29.38 | 29.05 | 29.05 | 440 | NASDAQ | PRTC | Thu, Sep 8, 2022 | 28.91 | 29.50 | 28.91 | 29.50 | 439 | NASDAQ | PRTC | Wed, Aug 31, 2022 | 28.74 | 29.44 | 28.74 | 29.00 | 438 | NASDAQ | PRTC | Tue, Aug 30, 2022 | 29.00 | 29.24 | 28.40 | 28.40 | 437 | NASDAQ | PRTC | Mon, Aug 29, 2022 | 28.50 | 30.50 | 28.50 | 30.00 | 436 | NASDAQ | PRTC | Thu, Aug 25, 2022 | 32.66 | 32.67 | 29.90 | 30.50 | 435 | NASDAQ | PRTC | Wed, Aug 24, 2022 | 29.74 | 29.74 | 29.74 | 29.74 | 434 | NASDAQ | PRTC | Tue, Aug 23, 2022 | 30.98 | 30.98 | 29.50 | 29.80 | 433 | NASDAQ | PRTC | Mon, Aug 22, 2022 | 30.06 | 30.75 | 29.50 | 29.75 | 432 | NASDAQ | PRTC | Fri, Aug 19, 2022 | 29.05 | 29.70 | 28.88 | 29.70 | 431 | NASDAQ | PRTC | Thu, Aug 18, 2022 | 30.99 | 31.65 | 29.49 | 29.54 | 430 | NASDAQ | PRTC | Wed, Aug 17, 2022 | 30.05 | 31.04 | 29.74 | 29.74 | 429 | NASDAQ | PRTC | Tue, Aug 16, 2022 | 31.00 | 31.05 | 29.00 | 30.39 | 428 | NASDAQ | PRTC | Mon, Aug 15, 2022 | 30.47 | 30.47 | 30.47 | 30.47 | 427 | NASDAQ | PRTC | Fri, Aug 12, 2022 | 30.00 | 31.90 | 28.60 | 29.91 | 426 | NASDAQ | PRTC | Thu, Aug 11, 2022 | 30.39 | 34.75 | 27.80 | 30.81 | 425 | NASDAQ | PRTC | Wed, Aug 10, 2022 | 27.60 | 32.00 | 27.60 | 31.50 | 424 | NASDAQ | PRTC | Tue, Aug 9, 2022 | 28.54 | 31.00 | 27.43 | 27.94 | 423 | NASDAQ | PRTC | Mon, Aug 8, 2022 | 26.71 | 33.47 | 26.71 | 27.52 | 422 | NASDAQ | PRTC | Fri, Aug 5, 2022 | 24.95 | 24.95 | 24.33 | 24.33 | 421 | NASDAQ | PRTC | Thu, Aug 4, 2022 | 24.29 | 24.29 | 24.29 | 24.29 | 420 | NASDAQ | PRTC | Tue, Aug 2, 2022 | 25.96 | 25.96 | 24.65 | 25.00 | 419 | NASDAQ | PRTC | Mon, Aug 1, 2022 | 23.20 | 27.33 | 23.20 | 25.78 | 418 | NASDAQ | PRTC | Fri, Jul 29, 2022 | 24.61 | 25.04 | 24.15 | 24.64 | 417 | NASDAQ | PRTC | Thu, Jul 28, 2022 | 25.23 | 26.40 | 24.23 | 25.55 | 416 | NASDAQ | PRTC | Wed, Jul 27, 2022 | 23.00 | 25.00 | 22.30 | 25.00 | 415 | NASDAQ | PRTC | Tue, Jul 26, 2022 | 22.80 | 23.84 | 22.80 | 23.84 | 414 | NASDAQ | PRTC | Fri, Jul 22, 2022 | 25.50 | 25.50 | 23.96 | 24.00 | 413 | NASDAQ | PRTC | Thu, Jul 21, 2022 | 25.21 | 26.34 | 23.90 | 24.22 | 412 | NASDAQ | PRTC | Wed, Jul 20, 2022 | 25.00 | 25.40 | 23.27 | 24.50 | 411 | NASDAQ | PRTC | Tue, Jul 19, 2022 | 23.88 | 27.65 | 23.45 | 26.04 | 410 | NASDAQ | PRTC | Mon, Jul 18, 2022 | 23.44 | 23.44 | 23.22 | 23.31 | 409 | NASDAQ | PRTC | Fri, Jul 15, 2022 | 23.34 | 23.90 | 23.29 | 23.29 | 408 | NASDAQ | PRTC | Thu, Jul 14, 2022 | 22.09 | 23.45 | 22.09 | 22.86 | 407 | NASDAQ | PRTC | Wed, Jul 13, 2022 | 23.00 | 23.00 | 22.00 | 22.55 | 406 | NASDAQ | PRTC | Tue, Jul 12, 2022 | 22.95 | 25.42 | 22.95 | 23.47 | 405 | NASDAQ | PRTC | Mon, Jul 11, 2022 | 23.07 | 23.58 | 21.07 | 22.20 | 404 | NASDAQ | PRTC | Thu, Jul 7, 2022 | 21.03 | 22.68 | 20.13 | 22.30 | 403 | NASDAQ | PRTC | Wed, Jul 6, 2022 | 21.94 | 21.94 | 20.60 | 20.77 | 402 | NASDAQ | PRTC | Tue, Jul 5, 2022 | 21.76 | 21.76 | 19.50 | 21.50 | 401 | NASDAQ | PRTC | Fri, Jul 1, 2022 | 21.04 | 21.18 | 19.74 | 20.71 | 400 | NASDAQ | PRTC | Thu, Jun 30, 2022 | 21.25 | 22.00 | 20.80 | 21.01 | 399 | NASDAQ | PRTC | Wed, Jun 29, 2022 | 20.92 | 22.25 | 20.70 | 21.36 | 398 | NASDAQ | PRTC | Mon, Jun 27, 2022 | 21.39 | 22.39 | 20.53 | 21.52 | 397 | NASDAQ | PRTC | Fri, Jun 24, 2022 | 20.64 | 21.90 | 19.50 | 21.20 | 396 | NASDAQ | PRTC | Wed, Jun 22, 2022 | 20.10 | 20.10 | 20.10 | 20.10 | 395 | NASDAQ | PRTC | Tue, Jun 21, 2022 | 19.85 | 20.54 | 19.00 | 19.65 | 394 | NASDAQ | PRTC | Fri, Jun 17, 2022 | 19.56 | 19.63 | 18.54 | 18.87 | 393 | NASDAQ | PRTC | Thu, Jun 16, 2022 | 19.32 | 23.23 | 19.32 | 20.00 | 392 | NASDAQ | PRTC | Wed, Jun 15, 2022 | 19.60 | 21.67 | 18.15 | 19.65 | 391 | NASDAQ | PRTC | Tue, Jun 14, 2022 | 19.63 | 19.63 | 19.30 | 19.50 | 390 | NASDAQ | PRTC | Mon, Jun 13, 2022 | 21.00 | 21.38 | 18.50 | 20.20 | 389 | NASDAQ | PRTC | Fri, Jun 10, 2022 | 22.01 | 22.01 | 22.01 | 22.01 | 388 | NASDAQ | PRTC | Thu, Jun 9, 2022 | 24.90 | 25.50 | 22.70 | 22.86 | 387 | NASDAQ | PRTC | Wed, Jun 8, 2022 | 22.16 | 24.90 | 22.16 | 23.90 | 386 | NASDAQ | PRTC | Tue, Jun 7, 2022 | 22.10 | 23.50 | 22.10 | 22.79 | 385 | NASDAQ | PRTC | Mon, Jun 6, 2022 | 22.00 | 23.00 | 21.62 | 23.00 | 384 | NASDAQ | PRTC | Fri, Jun 3, 2022 | 21.50 | 22.00 | 21.35 | 21.40 | 383 | NASDAQ | PRTC | Thu, Jun 2, 2022 | 22.00 | 22.20 | 21.00 | 22.00 | 382 | NASDAQ | PRTC | Wed, Jun 1, 2022 | 21.61 | 21.90 | 21.30 | 21.50 | 381 | NASDAQ | PRTC | Tue, May 31, 2022 | 23.25 | 23.30 | 22.52 | 22.55 | 380 | NASDAQ | PRTC | Fri, May 27, 2022 | 23.68 | 24.00 | 22.00 | 23.40 | 379 | NASDAQ | PRTC | Thu, May 26, 2022 | 22.59 | 23.60 | 22.51 | 22.75 | 378 | NASDAQ | PRTC | Wed, May 25, 2022 | 21.49 | 22.70 | 21.45 | 22.70 | 377 | NASDAQ | PRTC | Tue, May 24, 2022 | 23.00 | 23.50 | 22.99 | 23.19 | 376 | NASDAQ | PRTC | Mon, May 23, 2022 | 23.60 | 24.80 | 23.00 | 23.15 | 375 | NASDAQ | PRTC | Fri, May 20, 2022 | 23.40 | 25.97 | 23.00 | 24.18 | 374 | NASDAQ | PRTC | Thu, May 19, 2022 | 21.30 | 25.41 | 21.00 | 22.80 | 373 | NASDAQ | PRTC | Wed, May 18, 2022 | 22.50 | 22.80 | 21.05 | 21.71 | 372 | NASDAQ | PRTC | Tue, May 17, 2022 | 21.70 | 23.00 | 21.52 | 22.45 | 371 | NASDAQ | PRTC | Mon, May 16, 2022 | 21.60 | 21.74 | 21.25 | 21.60 | 370 | NASDAQ | PRTC | Fri, May 13, 2022 | 22.38 | 22.38 | 21.00 | 21.20 | 369 | NASDAQ | PRTC | Thu, May 12, 2022 | 21.50 | 23.50 | 21.45 | 21.70 | 368 | NASDAQ | PRTC | Wed, May 11, 2022 | 22.86 | 23.51 | 21.25 | 21.71 | 367 | NASDAQ | PRTC | Tue, May 10, 2022 | 21.91 | 22.30 | 20.52 | 21.19 | 366 | NASDAQ | PRTC | Mon, May 9, 2022 | 21.40 | 22.00 | 20.70 | 21.88 | 365 | NASDAQ | PRTC | Fri, May 6, 2022 | 21.51 | 21.51 | 18.91 | 21.49 | 364 | NASDAQ | PRTC | Thu, May 5, 2022 | 21.85 | 22.58 | 21.32 | 21.85 | 363 | NASDAQ | PRTC | Wed, May 4, 2022 | 23.01 | 23.01 | 21.88 | 21.88 | 362 | NASDAQ | PRTC | Tue, May 3, 2022 | 21.20 | 22.20 | 20.25 | 22.20 | 361 | NASDAQ | PRTC | Mon, May 2, 2022 | 21.05 | 21.05 | 18.90 | 20.03 | 360 | NASDAQ | PRTC | Fri, Apr 29, 2022 | 22.10 | 22.10 | 19.80 | 20.60 | 359 | NASDAQ | PRTC | Thu, Apr 28, 2022 | 22.60 | 22.60 | 22.23 | 22.23 | 358 | NASDAQ | PRTC | Wed, Apr 27, 2022 | 23.00 | 24.27 | 22.08 | 22.08 | 357 | NASDAQ | PRTC | Tue, Apr 26, 2022 | 23.82 | 23.82 | 23.82 | 23.82 | 356 | NASDAQ | PRTC | Mon, Apr 25, 2022 | 24.01 | 24.69 | 23.00 | 24.50 | 355 | NASDAQ | PRTC | Thu, Apr 21, 2022 | 24.69 | 25.61 | 24.50 | 25.61 | 354 | NASDAQ | PRTC | Wed, Apr 20, 2022 | 24.40 | 25.08 | 24.00 | 25.08 | 353 | NASDAQ | PRTC | Tue, Apr 19, 2022 | 26.39 | 26.70 | 24.10 | 25.20 | 352 | NASDAQ | PRTC | Mon, Apr 18, 2022 | 25.40 | 26.00 | 25.40 | 25.70 | 351 | NASDAQ | PRTC | Thu, Apr 14, 2022 | 25.63 | 28.21 | 25.30 | 26.75 | 350 | NASDAQ | PRTC | Wed, Apr 13, 2022 | 26.69 | 28.22 | 26.15 | 27.00 | 349 | NASDAQ | PRTC | Tue, Apr 12, 2022 | 25.57 | 25.75 | 25.57 | 25.75 | 348 | NASDAQ | PRTC | Mon, Apr 11, 2022 | 28.40 | 28.70 | 26.49 | 26.82 | 347 | NASDAQ | PRTC | Fri, Apr 8, 2022 | 27.84 | 28.44 | 27.84 | 27.99 | 346 | NASDAQ | PRTC | Thu, Apr 7, 2022 | 27.40 | 29.25 | 27.40 | 28.60 | 345 | NASDAQ | PRTC | Wed, Apr 6, 2022 | 27.60 | 29.25 | 26.49 | 27.30 | 344 | NASDAQ | PRTC | Tue, Apr 5, 2022 | 28.17 | 31.62 | 27.60 | 28.25 | 343 | NASDAQ | PRTC | Mon, Apr 4, 2022 | 27.00 | 27.66 | 26.95 | 27.66 | 342 | NASDAQ | PRTC | Fri, Apr 1, 2022 | 25.21 | 25.50 | 24.50 | 25.50 | 341 | NASDAQ | PRTC | Thu, Mar 31, 2022 | 26.60 | 26.60 | 22.88 | 25.26 | 340 | NASDAQ | PRTC | Wed, Mar 30, 2022 | 26.50 | 28.00 | 26.00 | 26.99 | 339 | NASDAQ | PRTC | Tue, Mar 29, 2022 | 26.00 | 26.87 | 25.87 | 26.87 | 338 | NASDAQ | PRTC | Mon, Mar 28, 2022 | 27.50 | 27.50 | 24.65 | 25.84 | 337 | NASDAQ | PRTC | Fri, Mar 25, 2022 | 28.25 | 29.30 | 27.85 | 28.22 | 336 | NASDAQ | PRTC | Thu, Mar 24, 2022 | 28.96 | 29.79 | 28.60 | 28.78 | 335 | NASDAQ | PRTC | Wed, Mar 23, 2022 | 28.15 | 30.95 | 27.94 | 28.59 | 334 | NASDAQ | PRTC | Tue, Mar 22, 2022 | 27.50 | 29.10 | 27.40 | 28.79 | 333 | NASDAQ | PRTC | Mon, Mar 21, 2022 | 28.00 | 28.00 | 28.00 | 28.00 | 332 | NASDAQ | PRTC | Fri, Mar 18, 2022 | 28.91 | 28.91 | 27.44 | 28.40 | 331 | NASDAQ | PRTC | Thu, Mar 17, 2022 | 28.01 | 28.50 | 26.70 | 27.40 | 330 | NASDAQ | PRTC | Wed, Mar 16, 2022 | 28.00 | 29.28 | 27.06 | 28.50 | 329 | NASDAQ | PRTC | Tue, Mar 15, 2022 | 26.50 | 27.05 | 25.20 | 26.94 | 328 | NASDAQ | PRTC | Mon, Mar 14, 2022 | 27.50 | 29.00 | 27.50 | 28.61 | 327 | NASDAQ | PRTC | Fri, Mar 11, 2022 | 26.00 | 26.79 | 25.25 | 26.79 | 326 | NASDAQ | PRTC | Thu, Mar 10, 2022 | 24.50 | 25.05 | 23.20 | 25.05 | 325 | NASDAQ | PRTC | Wed, Mar 9, 2022 | 23.10 | 23.70 | 21.95 | 23.70 | 324 | NASDAQ | PRTC | Tue, Mar 8, 2022 | 25.00 | 25.00 | 23.50 | 24.69 | 323 | NASDAQ | PRTC | Mon, Mar 7, 2022 | 26.51 | 26.51 | 25.36 | 25.36 | 322 | NASDAQ | PRTC | Fri, Mar 4, 2022 | 27.76 | 28.00 | 27.76 | 28.00 | 321 | NASDAQ | PRTC | Thu, Mar 3, 2022 | 30.00 | 30.00 | 30.00 | 30.00 | 320 | NASDAQ | PRTC | Mon, Feb 28, 2022 | 33.22 | 34.67 | 29.70 | 29.70 | 319 | NASDAQ | PRTC | Fri, Feb 25, 2022 | 31.00 | 31.00 | 31.00 | 31.00 | 318 | NASDAQ | PRTC | Thu, Feb 24, 2022 | 29.00 | 31.80 | 29.00 | 30.00 | 317 | NASDAQ | PRTC | Wed, Feb 23, 2022 | 32.50 | 32.50 | 32.50 | 32.50 | 316 | NASDAQ | PRTC | Fri, Feb 18, 2022 | 33.00 | 33.05 | 32.01 | 32.95 | 315 | NASDAQ | PRTC | Thu, Feb 17, 2022 | 36.01 | 36.01 | 34.00 | 34.00 | 314 | NASDAQ | PRTC | Wed, Feb 16, 2022 | 36.14 | 36.49 | 36.00 | 36.05 | 313 | NASDAQ | PRTC | Tue, Feb 15, 2022 | 38.50 | 38.50 | 38.50 | 38.50 | 312 | NASDAQ | PRTC | Fri, Feb 11, 2022 | 39.61 | 43.57 | 36.99 | 37.40 | 311 | NASDAQ | PRTC | Thu, Feb 10, 2022 | 36.00 | 37.00 | 36.00 | 37.00 | 310 | NASDAQ | PRTC | Wed, Feb 9, 2022 | 35.11 | 35.11 | 35.11 | 35.11 | 309 | NASDAQ | PRTC | Mon, Feb 7, 2022 | 36.62 | 36.62 | 35.99 | 36.00 | 308 | NASDAQ | PRTC | Fri, Feb 4, 2022 | 36.71 | 36.85 | 34.50 | 35.00 | 307 | NASDAQ | PRTC | Thu, Feb 3, 2022 | 36.00 | 36.00 | 36.00 | 36.00 | 306 | NASDAQ | PRTC | Wed, Feb 2, 2022 | 37.00 | 37.02 | 36.36 | 36.36 | 305 | NASDAQ | PRTC | Tue, Feb 1, 2022 | 38.42 | 38.42 | 36.00 | 37.00 | 304 | NASDAQ | PRTC | Mon, Jan 31, 2022 | 37.01 | 37.01 | 37.01 | 37.01 | 303 | NASDAQ | PRTC | Fri, Jan 28, 2022 | 39.00 | 39.00 | 37.50 | 37.50 | 302 | NASDAQ | PRTC | Thu, Jan 27, 2022 | 36.86 | 38.70 | 33.95 | 37.85 | 301 | NASDAQ | PRTC | Wed, Jan 26, 2022 | 35.35 | 36.00 | 35.00 | 36.00 | 300 | NASDAQ | PRTC | Tue, Jan 25, 2022 | 35.50 | 35.50 | 35.48 | 35.48 | 299 | NASDAQ | PRTC | Mon, Jan 24, 2022 | 35.26 | 36.80 | 35.05 | 35.69 | 298 | NASDAQ | PRTC | Fri, Jan 21, 2022 | 40.00 | 40.50 | 37.32 | 37.32 | 297 | NASDAQ | PRTC | Thu, Jan 20, 2022 | 40.18 | 40.18 | 38.00 | 39.01 | 296 | NASDAQ | PRTC | Wed, Jan 19, 2022 | 0.00 | 0.00 | 0.00 | 38.15 | 295 | NASDAQ | PRTC | Tue, Jan 18, 2022 | 0.00 | 0.00 | 0.00 | 38.15 | 294 | NASDAQ | PRTC | Fri, Jan 14, 2022 | 0.00 | 0.00 | 0.00 | 38.15 | 293 | NASDAQ | PRTC | Thu, Jan 13, 2022 | 38.15 | 38.15 | 38.15 | 38.15 | 292 | NASDAQ | PRTC | Wed, Jan 12, 2022 | 39.71 | 39.71 | 39.71 | 39.71 | 291 | NASDAQ | PRTC | Tue, Jan 11, 2022 | 39.82 | 39.82 | 39.82 | 39.82 | 290 | NASDAQ | PRTC | Mon, Jan 10, 2022 | 0.00 | 0.00 | 0.00 | 40.03 | 289 | NASDAQ | PRTC | Fri, Jan 7, 2022 | 40.55 | 41.58 | 40.03 | 40.03 | 288 | NASDAQ | PRTC | Thu, Jan 6, 2022 | 41.00 | 42.00 | 39.50 | 42.00 | 287 | NASDAQ | PRTC | Wed, Jan 5, 2022 | 39.50 | 39.95 | 39.50 | 39.95 | 286 | NASDAQ | PRTC | Tue, Jan 4, 2022 | 38.00 | 40.00 | 37.50 | 39.63 | 285 | NASDAQ | PRTC | Mon, Jan 3, 2022 | 37.00 | 37.48 | 36.00 | 37.00 | 284 | NASDAQ | PRTC | Fri, Dec 31, 2021 | 36.56 | 37.00 | 35.38 | 37.00 | 283 | NASDAQ | PRTC | Thu, Dec 30, 2021 | 37.03 | 41.40 | 36.90 | 36.98 | 282 | NASDAQ | PRTC | Wed, Dec 29, 2021 | 38.00 | 38.20 | 36.23 | 37.00 | 281 | NASDAQ | PRTC | Tue, Dec 28, 2021 | 39.00 | 39.05 | 36.12 | 37.00 | 280 | NASDAQ | PRTC | Mon, Dec 27, 2021 | 38.40 | 38.40 | 36.73 | 37.90 | 279 | NASDAQ | PRTC | Thu, Dec 23, 2021 | 36.74 | 37.10 | 36.74 | 36.99 | 278 | NASDAQ | PRTC | Wed, Dec 22, 2021 | 38.27 | 38.27 | 36.55 | 36.55 | 277 | NASDAQ | PRTC | Tue, Dec 21, 2021 | 37.61 | 37.61 | 37.61 | 37.61 | 276 | NASDAQ | PRTC | Mon, Dec 20, 2021 | 40.00 | 40.00 | 40.00 | 40.00 | 275 | NASDAQ | PRTC | Fri, Dec 17, 2021 | 39.00 | 44.74 | 38.62 | 41.16 | 274 | NASDAQ | PRTC | Thu, Dec 16, 2021 | 37.70 | 37.70 | 37.70 | 37.70 | 273 | NASDAQ | PRTC | Wed, Dec 15, 2021 | 36.00 | 36.00 | 36.00 | 36.00 | 272 | NASDAQ | PRTC | Tue, Dec 14, 2021 | 35.62 | 35.62 | 35.62 | 35.62 | 271 | NASDAQ | PRTC | Mon, Dec 13, 2021 | 36.36 | 36.36 | 36.36 | 36.36 | 270 | NASDAQ | PRTC | Fri, Dec 10, 2021 | 36.00 | 36.00 | 36.00 | 36.00 | 269 | NASDAQ | PRTC | Thu, Dec 9, 2021 | 37.72 | 37.72 | 35.00 | 35.00 | 268 | NASDAQ | PRTC | Wed, Dec 8, 2021 | 39.70 | 39.70 | 39.70 | 39.70 | 267 | NASDAQ | PRTC | Tue, Dec 7, 2021 | 38.00 | 40.16 | 38.00 | 39.79 | 266 | NASDAQ | PRTC | Mon, Dec 6, 2021 | 35.80 | 35.80 | 35.12 | 35.12 | 265 | NASDAQ | PRTC | Fri, Dec 3, 2021 | 38.07 | 38.07 | 35.00 | 37.00 | 264 | NASDAQ | PRTC | Thu, Dec 2, 2021 | 43.05 | 43.05 | 37.29 | 37.37 | 263 | NASDAQ | PRTC | Wed, Dec 1, 2021 | 0.00 | 0.00 | 0.00 | 43.57 | 262 | NASDAQ | PRTC | Tue, Nov 30, 2021 | 0.00 | 0.00 | 0.00 | 43.57 | 261 | NASDAQ | PRTC | Mon, Nov 29, 2021 | 43.57 | 43.57 | 43.57 | 43.57 | 260 | NASDAQ | PRTC | Fri, Nov 26, 2021 | 43.50 | 44.07 | 43.50 | 44.07 | 259 | NASDAQ | PRTC | Wed, Nov 24, 2021 | 44.50 | 44.50 | 43.50 | 43.50 | 258 | NASDAQ | PRTC | Tue, Nov 23, 2021 | 42.98 | 42.98 | 42.98 | 42.98 | 257 | NASDAQ | PRTC | Mon, Nov 22, 2021 | 44.72 | 44.72 | 44.00 | 44.00 | 256 | NASDAQ | PRTC | Fri, Nov 19, 2021 | 44.46 | 44.46 | 44.00 | 44.00 | 255 | NASDAQ | PRTC | Thu, Nov 18, 2021 | 45.75 | 46.00 | 44.75 | 44.75 | 254 | NASDAQ | PRTC | Wed, Nov 17, 2021 | 44.00 | 45.49 | 44.00 | 45.30 | 253 | NASDAQ | PRTC | Tue, Nov 16, 2021 | 45.50 | 45.80 | 45.30 | 45.30 | 252 | NASDAQ | PRTC | Mon, Nov 15, 2021 | 43.98 | 44.00 | 43.98 | 44.00 | 251 | NASDAQ | PRTC | Fri, Nov 12, 2021 | 45.88 | 46.10 | 45.88 | 46.10 | 250 | NASDAQ | PRTC | Thu, Nov 11, 2021 | 45.00 | 48.00 | 45.00 | 46.99 | 249 | NASDAQ | PRTC | Wed, Nov 10, 2021 | 48.00 | 48.00 | 44.00 | 44.00 | 248 | NASDAQ | PRTC | Tue, Nov 9, 2021 | 51.00 | 51.00 | 48.22 | 49.48 | 247 | NASDAQ | PRTC | Mon, Nov 8, 2021 | 48.60 | 52.50 | 48.60 | 51.64 | 246 | NASDAQ | PRTC | Fri, Nov 5, 2021 | 48.82 | 49.54 | 48.00 | 49.49 | 245 | NASDAQ | PRTC | Thu, Nov 4, 2021 | 49.19 | 50.11 | 47.50 | 50.11 | 244 | NASDAQ | PRTC | Wed, Nov 3, 2021 | 49.05 | 50.00 | 49.00 | 50.00 | 243 | NASDAQ | PRTC | Tue, Nov 2, 2021 | 48.73 | 49.38 | 48.50 | 48.50 | 242 | NASDAQ | PRTC | Mon, Nov 1, 2021 | 48.99 | 48.99 | 48.70 | 48.70 | 241 | NASDAQ | PRTC | Fri, Oct 29, 2021 | 48.73 | 48.73 | 48.64 | 48.67 | 240 | NASDAQ | PRTC | Thu, Oct 28, 2021 | 48.00 | 48.00 | 48.00 | 48.00 | 239 | NASDAQ | PRTC | Wed, Oct 27, 2021 | 48.69 | 48.69 | 47.80 | 47.80 | 238 | NASDAQ | PRTC | Tue, Oct 26, 2021 | 48.45 | 48.58 | 47.85 | 47.85 | 237 | NASDAQ | PRTC | Mon, Oct 25, 2021 | 48.30 | 48.30 | 48.30 | 48.30 | 236 | NASDAQ | PRTC | Fri, Oct 22, 2021 | 48.76 | 49.48 | 47.50 | 47.60 | 235 | NASDAQ | PRTC | Thu, Oct 21, 2021 | 50.44 | 51.00 | 50.44 | 51.00 | 234 | NASDAQ | PRTC | Wed, Oct 20, 2021 | 50.04 | 50.81 | 50.04 | 50.09 | 233 | NASDAQ | PRTC | Tue, Oct 19, 2021 | 49.30 | 49.30 | 49.30 | 49.30 | 232 | NASDAQ | PRTC | Mon, Oct 18, 2021 | 51.00 | 51.00 | 51.00 | 51.00 | 231 | NASDAQ | PRTC | Fri, Oct 15, 2021 | 51.58 | 51.58 | 51.58 | 51.58 | 230 | NASDAQ | PRTC | Thu, Oct 14, 2021 | 48.30 | 51.45 | 47.27 | 51.45 | 229 | NASDAQ | PRTC | Wed, Oct 13, 2021 | 48.85 | 48.94 | 48.14 | 48.50 | 228 | NASDAQ | PRTC | Tue, Oct 12, 2021 | 48.26 | 49.60 | 48.26 | 49.60 | 227 | NASDAQ | PRTC | Mon, Oct 11, 2021 | 48.50 | 50.00 | 48.05 | 49.17 | 226 | NASDAQ | PRTC | Fri, Oct 8, 2021 | 50.32 | 50.32 | 48.96 | 49.62 | 225 | NASDAQ | PRTC | Thu, Oct 7, 2021 | 49.58 | 54.25 | 47.50 | 50.50 | 224 | NASDAQ | PRTC | Wed, Oct 6, 2021 | 50.00 | 50.00 | 47.00 | 48.00 | 223 | NASDAQ | PRTC | Tue, Oct 5, 2021 | 48.54 | 48.69 | 46.50 | 48.05 | 222 | NASDAQ | PRTC | Mon, Oct 4, 2021 | 47.95 | 48.00 | 46.00 | 46.90 | 221 | NASDAQ | PRTC | Fri, Oct 1, 2021 | 47.60 | 47.60 | 47.60 | 47.60 | 220 | NASDAQ | PRTC | Thu, Sep 30, 2021 | 50.00 | 50.00 | 47.85 | 47.99 | 219 | NASDAQ | PRTC | Wed, Sep 29, 2021 | 49.50 | 49.50 | 49.50 | 49.50 | 218 | NASDAQ | PRTC | Tue, Sep 28, 2021 | 52.56 | 52.56 | 48.37 | 49.09 | 217 | NASDAQ | PRTC | Mon, Sep 27, 2021 | 51.22 | 52.51 | 50.00 | 51.89 | 216 | NASDAQ | PRTC | Fri, Sep 24, 2021 | 52.60 | 52.60 | 52.00 | 52.00 | 215 | NASDAQ | PRTC | Thu, Sep 23, 2021 | 51.67 | 51.98 | 50.51 | 51.90 | 214 | NASDAQ | PRTC | Wed, Sep 22, 2021 | 49.50 | 52.80 | 49.50 | 51.48 | 213 | NASDAQ | PRTC | Tue, Sep 21, 2021 | 53.26 | 53.26 | 47.50 | 48.68 | 212 | NASDAQ | PRTC | Mon, Sep 20, 2021 | 48.60 | 54.39 | 48.35 | 52.92 | 211 | NASDAQ | PRTC | Fri, Sep 17, 2021 | 50.49 | 50.74 | 48.75 | 49.31 | 210 | NASDAQ | PRTC | Thu, Sep 16, 2021 | 49.90 | 49.90 | 48.66 | 48.70 | 209 | NASDAQ | PRTC | Wed, Sep 15, 2021 | 49.59 | 50.25 | 47.88 | 49.50 | 208 | NASDAQ | PRTC | Tue, Sep 14, 2021 | 48.00 | 48.17 | 48.00 | 48.13 | 207 | NASDAQ | PRTC | Mon, Sep 13, 2021 | 49.00 | 49.00 | 47.50 | 47.70 | 206 | NASDAQ | PRTC | Fri, Sep 10, 2021 | 0.00 | 0.00 | 0.00 | 48.00 | 205 | NASDAQ | PRTC | Thu, Sep 9, 2021 | 48.20 | 49.49 | 46.88 | 48.00 | 204 | NASDAQ | PRTC | Wed, Sep 8, 2021 | 48.35 | 49.23 | 48.15 | 48.25 | 203 | NASDAQ | PRTC | Tue, Sep 7, 2021 | 50.22 | 50.69 | 48.55 | 48.77 | 202 | NASDAQ | PRTC | Fri, Sep 3, 2021 | 49.00 | 51.42 | 48.10 | 49.30 | 201 | NASDAQ | PRTC | Thu, Sep 2, 2021 | 50.70 | 50.70 | 48.06 | 49.29 | 200 | NASDAQ | PRTC | Wed, Sep 1, 2021 | 49.43 | 50.69 | 47.52 | 50.43 | 199 | NASDAQ | PRTC | Tue, Aug 31, 2021 | 52.24 | 52.33 | 49.74 | 50.00 | 198 | NASDAQ | PRTC | Mon, Aug 30, 2021 | 53.00 | 53.44 | 51.70 | 53.44 | 197 | NASDAQ | PRTC | Fri, Aug 27, 2021 | 49.96 | 49.96 | 47.57 | 47.57 | 196 | NASDAQ | PRTC | Thu, Aug 26, 2021 | 52.83 | 56.46 | 49.00 | 49.00 | 195 | NASDAQ | PRTC | Wed, Aug 25, 2021 | 48.00 | 49.95 | 48.00 | 48.97 | 194 | NASDAQ | PRTC | Tue, Aug 24, 2021 | 47.75 | 47.75 | 47.01 | 47.53 | 193 | NASDAQ | PRTC | Mon, Aug 23, 2021 | 48.00 | 48.00 | 46.95 | 46.95 | 192 | NASDAQ | PRTC | Fri, Aug 20, 2021 | 46.86 | 48.81 | 46.72 | 47.59 | 191 | NASDAQ | PRTC | Thu, Aug 19, 2021 | 48.48 | 51.12 | 46.43 | 48.87 | 190 | NASDAQ | PRTC | Wed, Aug 18, 2021 | 47.63 | 49.90 | 46.77 | 46.77 | 189 | NASDAQ | PRTC | Tue, Aug 17, 2021 | 48.69 | 48.69 | 46.00 | 47.64 | 188 | NASDAQ | PRTC | Mon, Aug 16, 2021 | 48.70 | 48.70 | 47.68 | 47.68 | 187 | NASDAQ | PRTC | Fri, Aug 13, 2021 | 49.99 | 49.99 | 43.57 | 44.48 | 186 | NASDAQ | PRTC | Thu, Aug 12, 2021 | 46.98 | 47.45 | 46.03 | 47.45 | 185 | NASDAQ | PRTC | Wed, Aug 11, 2021 | 50.00 | 50.17 | 45.35 | 45.35 | 184 | NASDAQ | PRTC | Tue, Aug 10, 2021 | 0.00 | 0.00 | 0.00 | 46.08 | 183 | NASDAQ | PRTC | Mon, Aug 9, 2021 | 52.88 | 52.88 | 42.84 | 46.08 | 182 | NASDAQ | PRTC | Fri, Aug 6, 2021 | 47.00 | 47.00 | 47.00 | 47.00 | 181 | NASDAQ | PRTC | Thu, Aug 5, 2021 | 0.00 | 0.00 | 0.00 | 47.69 | 180 | NASDAQ | PRTC | Wed, Aug 4, 2021 | 0.00 | 0.00 | 0.00 | 47.69 | 179 | NASDAQ | PRTC | Tue, Aug 3, 2021 | 0.00 | 0.00 | 0.00 | 47.69 | 178 | NASDAQ | PRTC | Mon, Aug 2, 2021 | 0.00 | 0.00 | 0.00 | 47.69 | 177 | NASDAQ | PRTC | Fri, Jul 30, 2021 | 0.00 | 0.00 | 0.00 | 47.69 | 176 | NASDAQ | PRTC | Thu, Jul 29, 2021 | 0.00 | 0.00 | 0.00 | 47.69 | 175 | NASDAQ | PRTC | Wed, Jul 28, 2021 | 0.00 | 0.00 | 0.00 | 47.69 | 174 | NASDAQ | PRTC | Tue, Jul 27, 2021 | 0.00 | 0.00 | 0.00 | 47.69 | 173 | NASDAQ | PRTC | Mon, Jul 26, 2021 | 49.78 | 49.78 | 47.69 | 47.69 | 172 | NASDAQ | PRTC | Fri, Jul 23, 2021 | 0.00 | 0.00 | 0.00 | 48.00 | 171 | NASDAQ | PRTC | Thu, Jul 22, 2021 | 0.00 | 0.00 | 0.00 | 48.00 | 170 | NASDAQ | PRTC | Wed, Jul 21, 2021 | 46.86 | 48.00 | 46.86 | 48.00 | 169 | NASDAQ | PRTC | Tue, Jul 20, 2021 | 46.75 | 46.75 | 46.75 | 46.75 | 168 | NASDAQ | PRTC | Mon, Jul 19, 2021 | 0.00 | 0.00 | 0.00 | 43.20 | 167 | NASDAQ | PRTC | Fri, Jul 16, 2021 | 0.00 | 0.00 | 0.00 | 43.20 | 166 | NASDAQ | PRTC | Thu, Jul 15, 2021 | 0.00 | 0.00 | 0.00 | 43.20 | 165 | NASDAQ | PRTC | Wed, Jul 14, 2021 | 46.00 | 46.00 | 43.20 | 43.20 | 164 | NASDAQ | PRTC | Tue, Jul 13, 2021 | 0.00 | 0.00 | 0.00 | 48.95 | 163 | NASDAQ | PRTC | Mon, Jul 12, 2021 | 48.95 | 48.95 | 48.95 | 48.95 | 162 | NASDAQ | PRTC | Fri, Jul 9, 2021 | 0.00 | 0.00 | 0.00 | 49.00 | 161 | NASDAQ | PRTC | Thu, Jul 8, 2021 | 0.00 | 0.00 | 0.00 | 49.00 | 160 | NASDAQ | PRTC | Wed, Jul 7, 2021 | 0.00 | 0.00 | 0.00 | 49.00 | 159 | NASDAQ | PRTC | Tue, Jul 6, 2021 | 0.00 | 0.00 | 0.00 | 49.00 | 158 | NASDAQ | PRTC | Fri, Jul 2, 2021 | 0.00 | 0.00 | 0.00 | 49.00 | 157 | NASDAQ | PRTC | Thu, Jul 1, 2021 | 0.00 | 0.00 | 0.00 | 49.00 | 156 | NASDAQ | PRTC | Wed, Jun 30, 2021 | 48.50 | 49.00 | 48.50 | 49.00 | 155 | NASDAQ | PRTC | Tue, Jun 29, 2021 | 0.00 | 0.00 | 0.00 | 48.32 | 154 | NASDAQ | PRTC | Mon, Jun 28, 2021 | 47.30 | 48.32 | 47.30 | 48.32 | 153 | NASDAQ | PRTC | Fri, Jun 25, 2021 | 50.09 | 50.09 | 46.51 | 46.55 | 152 | NASDAQ | PRTC | Thu, Jun 24, 2021 | 0.00 | 0.00 | 0.00 | 50.07 | 151 | NASDAQ | PRTC | Wed, Jun 23, 2021 | 50.12 | 50.12 | 50.07 | 50.07 | 150 | NASDAQ | PRTC | Tue, Jun 22, 2021 | 51.79 | 51.79 | 49.62 | 49.62 | 149 | NASDAQ | PRTC | Mon, Jun 21, 2021 | 0.00 | 0.00 | 0.00 | 51.10 | 148 | NASDAQ | PRTC | Fri, Jun 18, 2021 | 0.00 | 0.00 | 0.00 | 51.10 | 147 | NASDAQ | PRTC | Thu, Jun 17, 2021 | 51.99 | 51.99 | 49.77 | 51.10 | 146 | NASDAQ | PRTC | Wed, Jun 16, 2021 | 53.66 | 53.71 | 52.66 | 52.66 | 145 | NASDAQ | PRTC | Tue, Jun 15, 2021 | 0.00 | 0.00 | 0.00 | 57.76 | 144 | NASDAQ | PRTC | Mon, Jun 14, 2021 | 0.00 | 0.00 | 0.00 | 57.76 | 143 | NASDAQ | PRTC | Fri, Jun 11, 2021 | 0.00 | 0.00 | 0.00 | 57.76 | 142 | NASDAQ | PRTC | Thu, Jun 10, 2021 | 59.92 | 59.92 | 57.76 | 57.76 | 141 | NASDAQ | PRTC | Wed, Jun 9, 2021 | 0.00 | 0.00 | 0.00 | 56.11 | 140 | NASDAQ | PRTC | Tue, Jun 8, 2021 | 0.00 | 0.00 | 0.00 | 56.11 | 139 | NASDAQ | PRTC | Mon, Jun 7, 2021 | 56.70 | 56.82 | 53.00 | 56.11 | 138 | NASDAQ | PRTC | Fri, Jun 4, 2021 | 57.00 | 57.00 | 57.00 | 57.00 | 137 | NASDAQ | PRTC | Thu, Jun 3, 2021 | 53.08 | 54.00 | 45.01 | 53.45 | 136 | NASDAQ | PRTC | Wed, Jun 2, 2021 | 0.00 | 0.00 | 0.00 | 57.56 | 135 | NASDAQ | PRTC | Tue, Jun 1, 2021 | 57.56 | 57.56 | 57.56 | 57.56 | 134 | NASDAQ | PRTC | Fri, May 28, 2021 | 55.86 | 55.86 | 55.86 | 55.86 | 133 | NASDAQ | PRTC | Thu, May 27, 2021 | 55.91 | 55.91 | 55.91 | 55.91 | 132 | NASDAQ | PRTC | Wed, May 26, 2021 | 55.00 | 55.00 | 55.00 | 55.00 | 131 | NASDAQ | PRTC | Tue, May 25, 2021 | 0.00 | 0.00 | 0.00 | 52.59 | 130 | NASDAQ | PRTC | Mon, May 24, 2021 | 0.00 | 0.00 | 0.00 | 52.59 | 129 | NASDAQ | PRTC | Fri, May 21, 2021 | 0.00 | 0.00 | 0.00 | 52.59 | 128 | NASDAQ | PRTC | Thu, May 20, 2021 | 0.00 | 0.00 | 0.00 | 52.59 | 127 | NASDAQ | PRTC | Wed, May 19, 2021 | 0.00 | 0.00 | 0.00 | 52.59 | 126 | NASDAQ | PRTC | Tue, May 18, 2021 | 52.91 | 52.91 | 52.59 | 52.59 | 125 | NASDAQ | PRTC | Mon, May 17, 2021 | 0.00 | 0.00 | 0.00 | 52.05 | 124 | NASDAQ | PRTC | Fri, May 14, 2021 | 0.00 | 0.00 | 0.00 | 52.05 | 123 | NASDAQ | PRTC | Thu, May 13, 2021 | 52.10 | 52.10 | 52.05 | 52.05 | 122 | NASDAQ | PRTC | Wed, May 12, 2021 | 52.50 | 52.50 | 52.35 | 52.36 | 121 | NASDAQ | PRTC | Tue, May 11, 2021 | 54.74 | 54.74 | 54.74 | 54.74 | 120 | NASDAQ | PRTC | Mon, May 10, 2021 | 0.00 | 0.00 | 0.00 | 56.80 | 119 | NASDAQ | PRTC | Fri, May 7, 2021 | 0.00 | 0.00 | 0.00 | 56.80 | 118 | NASDAQ | PRTC | Thu, May 6, 2021 | 0.00 | 0.00 | 0.00 | 56.80 | 117 | NASDAQ | PRTC | Wed, May 5, 2021 | 0.00 | 0.00 | 0.00 | 56.80 | 116 | NASDAQ | PRTC | Tue, May 4, 2021 | 0.00 | 0.00 | 0.00 | 56.80 | 115 | NASDAQ | PRTC | Mon, May 3, 2021 | 0.00 | 0.00 | 0.00 | 56.80 | 114 | NASDAQ | PRTC | Fri, Apr 30, 2021 | 0.00 | 0.00 | 0.00 | 56.80 | 113 | NASDAQ | PRTC | Thu, Apr 29, 2021 | 0.00 | 0.00 | 0.00 | 56.80 | 112 | NASDAQ | PRTC | Wed, Apr 28, 2021 | 0.00 | 0.00 | 0.00 | 56.80 | 111 | NASDAQ | PRTC | Tue, Apr 27, 2021 | 0.00 | 0.00 | 0.00 | 56.80 | 110 | NASDAQ | PRTC | Mon, Apr 26, 2021 | 0.00 | 0.00 | 0.00 | 56.80 | 109 | NASDAQ | PRTC | Fri, Apr 23, 2021 | 0.00 | 0.00 | 0.00 | 56.80 | 108 | NASDAQ | PRTC | Thu, Apr 22, 2021 | 56.80 | 56.80 | 56.80 | 56.80 | 107 | NASDAQ | PRTC | Wed, Apr 21, 2021 | 0.00 | 0.00 | 0.00 | 57.80 | 106 | NASDAQ | PRTC | Tue, Apr 20, 2021 | 0.00 | 0.00 | 0.00 | 57.80 | 105 | NASDAQ | PRTC | Mon, Apr 19, 2021 | 0.00 | 0.00 | 0.00 | 57.80 | 104 | NASDAQ | PRTC | Fri, Apr 16, 2021 | 0.00 | 0.00 | 0.00 | 57.80 | 103 | NASDAQ | PRTC | Thu, Apr 15, 2021 | 0.00 | 0.00 | 0.00 | 57.80 | 102 | NASDAQ | PRTC | Wed, Apr 14, 2021 | 0.00 | 0.00 | 0.00 | 57.80 | 101 | NASDAQ | PRTC | Tue, Apr 13, 2021 | 0.00 | 0.00 | 0.00 | 57.80 | 100 | NASDAQ | PRTC | Mon, Apr 12, 2021 | 57.80 | 57.80 | 57.80 | 57.80 | 99 | NASDAQ | PRTC | Fri, Apr 9, 2021 | 0.00 | 0.00 | 0.00 | 60.00 | 98 | NASDAQ | PRTC | Thu, Apr 8, 2021 | 65.90 | 65.90 | 60.00 | 60.00 | 97 | NASDAQ | PRTC | Wed, Apr 7, 2021 | 0.00 | 0.00 | 0.00 | 59.13 | 96 | NASDAQ | PRTC | Tue, Apr 6, 2021 | 0.00 | 0.00 | 0.00 | 59.13 | 95 | NASDAQ | PRTC | Mon, Apr 5, 2021 | 0.00 | 0.00 | 0.00 | 59.13 | 94 | NASDAQ | PRTC | Thu, Apr 1, 2021 | 0.00 | 0.00 | 0.00 | 59.13 | 93 | NASDAQ | PRTC | Wed, Mar 31, 2021 | 57.28 | 59.13 | 57.28 | 59.13 | 92 | NASDAQ | PRTC | Tue, Mar 30, 2021 | 0.00 | 0.00 | 0.00 | 64.00 | 91 | NASDAQ | PRTC | Mon, Mar 29, 2021 | 59.84 | 64.00 | 59.84 | 64.00 | 90 | NASDAQ | PRTC | Fri, Mar 26, 2021 | 0.00 | 0.00 | 0.00 | 60.00 | 89 | NASDAQ | PRTC | Thu, Mar 25, 2021 | 0.00 | 0.00 | 0.00 | 60.00 | 88 | NASDAQ | PRTC | Wed, Mar 24, 2021 | 0.00 | 0.00 | 0.00 | 60.00 | 87 | NASDAQ | PRTC | Tue, Mar 23, 2021 | 0.00 | 0.00 | 0.00 | 60.00 | 86 | NASDAQ | PRTC | Mon, Mar 22, 2021 | 0.00 | 0.00 | 0.00 | 60.00 | 85 | NASDAQ | PRTC | Fri, Mar 19, 2021 | 0.00 | 0.00 | 0.00 | 60.00 | 84 | NASDAQ | PRTC | Thu, Mar 18, 2021 | 0.00 | 0.00 | 0.00 | 60.00 | 83 | NASDAQ | PRTC | Wed, Mar 17, 2021 | 59.85 | 60.00 | 59.85 | 60.00 | 82 | NASDAQ | PRTC | Tue, Mar 16, 2021 | 57.00 | 57.00 | 57.00 | 57.00 | 81 | NASDAQ | PRTC | Mon, Mar 15, 2021 | 51.66 | 51.66 | 51.66 | 51.66 | 80 | NASDAQ | PRTC | Fri, Mar 12, 2021 | 58.00 | 58.00 | 58.00 | 58.00 | 79 | NASDAQ | PRTC | Thu, Mar 11, 2021 | 56.98 | 56.98 | 56.98 | 56.98 | 78 | NASDAQ | PRTC | Wed, Mar 10, 2021 | 0.00 | 0.00 | 0.00 | 52.00 | 77 | NASDAQ | PRTC | Tue, Mar 9, 2021 | 0.00 | 0.00 | 0.00 | 52.00 | 76 | NASDAQ | PRTC | Mon, Mar 8, 2021 | 52.05 | 52.05 | 52.00 | 52.00 | 75 | NASDAQ | PRTC | Fri, Mar 5, 2021 | 55.00 | 55.00 | 55.00 | 55.00 | 74 | NASDAQ | PRTC | Thu, Mar 4, 2021 | 0.00 | 0.00 | 0.00 | 51.71 | 73 | NASDAQ | PRTC | Wed, Mar 3, 2021 | 0.00 | 0.00 | 0.00 | 51.71 | 72 | NASDAQ | PRTC | Tue, Mar 2, 2021 | 51.71 | 51.71 | 51.71 | 51.71 | 71 | NASDAQ | PRTC | Mon, Mar 1, 2021 | 0.00 | 0.00 | 0.00 | 54.74 | 70 | NASDAQ | PRTC | Fri, Feb 26, 2021 | 0.00 | 0.00 | 0.00 | 54.74 | 69 | NASDAQ | PRTC | Thu, Feb 25, 2021 | 54.74 | 54.74 | 54.74 | 54.74 | 68 | NASDAQ | PRTC | Wed, Feb 24, 2021 | 58.00 | 59.50 | 58.00 | 59.45 | 67 | NASDAQ | PRTC | Tue, Feb 23, 2021 | 0.00 | 0.00 | 0.00 | 58.00 | 66 | NASDAQ | PRTC | Mon, Feb 22, 2021 | 0.00 | 0.00 | 0.00 | 58.00 | 65 | NASDAQ | PRTC | Fri, Feb 19, 2021 | 0.00 | 0.00 | 0.00 | 58.00 | 64 | NASDAQ | PRTC | Thu, Feb 18, 2021 | 0.00 | 0.00 | 0.00 | 58.00 | 63 | NASDAQ | PRTC | Wed, Feb 17, 2021 | 0.00 | 0.00 | 0.00 | 58.00 | 62 | NASDAQ | PRTC | Tue, Feb 16, 2021 | 0.00 | 0.00 | 0.00 | 58.00 | 61 | NASDAQ | PRTC | Fri, Feb 12, 2021 | 59.00 | 59.00 | 57.00 | 58.00 | 60 | NASDAQ | PRTC | Thu, Feb 11, 2021 | 55.05 | 59.97 | 55.02 | 59.97 | 59 | NASDAQ | PRTC | Wed, Feb 10, 2021 | 0.00 | 0.00 | 0.00 | 53.53 | 58 | NASDAQ | PRTC | Tue, Feb 9, 2021 | 0.00 | 0.00 | 0.00 | 53.53 | 57 | NASDAQ | PRTC | Mon, Feb 8, 2021 | 0.00 | 0.00 | 0.00 | 53.53 | 56 | NASDAQ | PRTC | Fri, Feb 5, 2021 | 53.44 | 53.53 | 53.44 | 53.53 | 55 | NASDAQ | PRTC | Thu, Feb 4, 2021 | 50.50 | 50.50 | 50.50 | 50.50 | 54 | NASDAQ | PRTC | Wed, Feb 3, 2021 | 56.00 | 56.00 | 54.00 | 54.00 | 53 | NASDAQ | PRTC | Tue, Feb 2, 2021 | 54.10 | 54.10 | 54.00 | 54.00 | 52 | NASDAQ | PRTC | Mon, Feb 1, 2021 | 56.00 | 58.00 | 55.00 | 58.00 | 51 | NASDAQ | PRTC | Fri, Jan 29, 2021 | 0.00 | 0.00 | 0.00 | 54.00 | 50 | NASDAQ | PRTC | Thu, Jan 28, 2021 | 0.00 | 0.00 | 0.00 | 54.00 | 49 | NASDAQ | PRTC | Wed, Jan 27, 2021 | 56.00 | 56.00 | 54.00 | 54.00 | 48 | NASDAQ | PRTC | Tue, Jan 26, 2021 | 58.65 | 58.99 | 55.00 | 56.49 | 47 | NASDAQ | PRTC | Mon, Jan 25, 2021 | 53.00 | 53.00 | 53.00 | 53.00 | 46 | NASDAQ | PRTC | Fri, Jan 22, 2021 | 52.98 | 53.00 | 49.78 | 49.78 | 45 | NASDAQ | PRTC | Thu, Jan 21, 2021 | 55.50 | 55.50 | 55.50 | 55.50 | 44 | NASDAQ | PRTC | Wed, Jan 20, 2021 | 53.24 | 53.24 | 53.24 | 53.24 | 43 | NASDAQ | PRTC | Tue, Jan 19, 2021 | 54.30 | 54.30 | 54.30 | 54.30 | 42 | NASDAQ | PRTC | Fri, Jan 15, 2021 | 55.40 | 55.40 | 54.95 | 54.95 | 41 | NASDAQ | PRTC | Thu, Jan 14, 2021 | 56.74 | 56.74 | 53.79 | 54.00 | 40 | NASDAQ | PRTC | Wed, Jan 13, 2021 | 58.00 | 58.00 | 55.00 | 55.10 | 39 | NASDAQ | PRTC | Tue, Jan 12, 2021 | 57.95 | 59.97 | 56.00 | 58.00 | 38 | NASDAQ | PRTC | Mon, Jan 11, 2021 | 55.30 | 55.80 | 52.92 | 55.75 | 37 | NASDAQ | PRTC | Fri, Jan 8, 2021 | 58.65 | 58.70 | 56.95 | 56.97 | 36 | NASDAQ | PRTC | Thu, Jan 7, 2021 | 60.96 | 63.95 | 52.06 | 60.96 | 35 | NASDAQ | PRTC | Wed, Jan 6, 2021 | 55.95 | 55.95 | 55.95 | 55.95 | 34 | NASDAQ | PRTC | Tue, Jan 5, 2021 | 57.00 | 57.00 | 55.95 | 55.95 | 33 | NASDAQ | PRTC | Mon, Jan 4, 2021 | 54.00 | 56.50 | 54.00 | 56.50 | 32 | NASDAQ | PRTC | Thu, Dec 31, 2020 | 0.00 | 0.00 | 0.00 | 54.00 | 31 | NASDAQ | PRTC | Wed, Dec 30, 2020 | 0.00 | 0.00 | 0.00 | 54.00 | 30 | NASDAQ | PRTC | Tue, Dec 29, 2020 | 0.00 | 0.00 | 0.00 | 54.00 | 29 | NASDAQ | PRTC | Mon, Dec 28, 2020 | 56.89 | 56.89 | 52.79 | 54.00 | 28 | NASDAQ | PRTC | Thu, Dec 24, 2020 | 52.27 | 54.89 | 52.00 | 53.00 | 27 | NASDAQ | PRTC | Wed, Dec 23, 2020 | 51.99 | 52.00 | 51.95 | 52.00 | 26 | NASDAQ | PRTC | Tue, Dec 22, 2020 | 50.03 | 50.03 | 49.99 | 50.00 | 25 | NASDAQ | PRTC | Mon, Dec 21, 2020 | 50.05 | 50.05 | 50.00 | 50.00 | 24 | NASDAQ | PRTC | Fri, Dec 18, 2020 | 50.00 | 50.71 | 50.00 | 50.00 | 23 | NASDAQ | PRTC | Thu, Dec 17, 2020 | 49.99 | 54.48 | 49.99 | 50.00 | 22 | NASDAQ | PRTC | Wed, Dec 16, 2020 | 48.58 | 49.00 | 47.26 | 48.00 | 21 | NASDAQ | PRTC | Tue, Dec 15, 2020 | 45.05 | 47.05 | 45.00 | 47.00 | 20 | NASDAQ | PRTC | Mon, Dec 14, 2020 | 45.00 | 45.26 | 44.75 | 45.26 | 19 | NASDAQ | PRTC | Fri, Dec 11, 2020 | 47.00 | 47.00 | 44.55 | 44.55 | 18 | NASDAQ | PRTC | Thu, Dec 10, 2020 | 44.99 | 44.99 | 44.49 | 44.49 | 17 | NASDAQ | PRTC | Wed, Dec 9, 2020 | 41.75 | 41.75 | 41.75 | 41.75 | 16 | NASDAQ | PRTC | Tue, Dec 8, 2020 | 0.00 | 0.00 | 0.00 | 42.12 | 15 | NASDAQ | PRTC | Mon, Dec 7, 2020 | 42.12 | 42.12 | 42.12 | 42.12 | 14 | NASDAQ | PRTC | Fri, Dec 4, 2020 | 0.00 | 0.00 | 0.00 | 41.94 | 13 | NASDAQ | PRTC | Thu, Dec 3, 2020 | 0.00 | 0.00 | 0.00 | 41.94 | 12 | NASDAQ | PRTC | Wed, Dec 2, 2020 | 47.54 | 48.00 | 41.00 | 41.94 | 11 | NASDAQ | PRTC | Tue, Dec 1, 2020 | 0.00 | 0.00 | 0.00 | 39.90 | 10 | NASDAQ | PRTC | Mon, Nov 30, 2020 | 39.21 | 39.95 | 39.21 | 39.90 | 9 | NASDAQ | PRTC | Fri, Nov 27, 2020 | 39.50 | 39.50 | 39.50 | 39.50 | 8 | NASDAQ | PRTC | Wed, Nov 25, 2020 | 38.50 | 38.61 | 38.50 | 38.61 | 7 | NASDAQ | PRTC | Tue, Nov 24, 2020 | 39.05 | 40.00 | 39.05 | 40.00 | 6 | NASDAQ | PRTC | Mon, Nov 23, 2020 | 39.24 | 39.24 | 38.83 | 38.83 | 5 | NASDAQ | PRTC | Fri, Nov 20, 2020 | 40.29 | 40.29 | 39.00 | 39.81 | 4 | NASDAQ | PRTC | Thu, Nov 19, 2020 | 40.00 | 40.00 | 40.00 | 40.00 | 3 | NASDAQ | PRTC | Wed, Nov 18, 2020 | 41.07 | 41.50 | 40.19 | 40.19 | 2 | NASDAQ | PRTC | Tue, Nov 17, 2020 | 41.30 | 41.81 | 40.34 | 40.50 | 1 | NASDAQ | PRTC | Mon, Nov 16, 2020 | 33.00 | 38.75 | 33.00 | 38.50 |
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# | Exchange | Symbol | Date | Open | High | Low | Close |
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