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Historical Stock Prices

PRTK 
$6.72
*  
0.21
3.23%
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*Delayed - data as of Jan. 18, 2019  -  Find a broker to begin trading PRTK now
Exchange:NASDAQ
Industry: Health Care
Community Rating:
 
 
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Visit our historical Nasdaq Official Close Price (NOCP) page to view the history.

Get up to 10 years of daily historical stock prices & volumes.

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Results for: 3 Month, From 18-OCT-2018 TO 18-JAN-2019

Date Open High "High" is the highest sales price the stock has achieved during the regular trading hours, the intra-day high. Low "Low" is the lowest sales price the stock has fallen to during the regular trading hours, the intra-day low. Close / Last "Close" is the period at the end of the trading session. Sometimes used to refer to closing price. Volume "Volume" The closing daily official volumes represented graphically for each trading day.
01/18/2019 6.51 6.8081 6.47 6.72 349,897
01/17/2019 6.63 6.66 6.46 6.51 319,896
01/16/2019 6.64 6.695 6.39 6.61 575,655
01/15/2019 6.32 6.45 6.27 6.37 246,081
01/14/2019 6.2 6.41 6.1121 6.31 280,485
01/11/2019 6.1 6.29 6.0301 6.24 233,372
01/10/2019 6.1 6.18 6 6.13 160,425
01/09/2019 6.04 6.26 5.92 6.12 298,772
01/08/2019 5.97 6.1723 5.846 6.04 451,378
01/07/2019 5.69 5.99 5.69 5.92 499,871
01/04/2019 5.68 5.8 5.57 5.62 420,817
01/03/2019 5.55 5.99 5.52 5.6 482,276
01/02/2019 5.11 5.75 5.11 5.57 608,118
12/31/2018 5.23 5.2345 4.95 5.13 551,691
12/28/2018 5.26 5.41 4.92 5.18 525,908
12/27/2018 4.73 5.47 4.57 5.28 923,616
12/26/2018 4.85 4.89 4.5 4.82 803,617
12/24/2018 4.9 4.97 4.7236 4.8 487,999
12/21/2018 5.37 5.37 4.815 4.87 1,160,398
12/20/2018 5.75 5.96 5.32 5.35 730,362
12/19/2018 5.82 5.94 5.63 5.76 432,617
12/18/2018 6.06 6.08 5.71 5.84 391,501
12/17/2018 5.99 6.2776 5.75 5.81 350,140
12/14/2018 6.23 6.23 5.94 6.01 635,065
12/13/2018 6.56 6.64 6.2199 6.26 443,234
12/12/2018 6.98 7.19 6.52 6.56 359,547
12/11/2018 6.97 7.06 6.77 6.89 168,545
12/10/2018 6.86 6.99 6.68 6.88 179,727
12/07/2018 7.14 7.25 6.86 6.87 265,595
12/06/2018 7.18 7.3 7.02 7.14 343,699
12/04/2018 7.48 7.59 7.16 7.17 359,222
12/03/2018 7.65 7.65 7.35 7.45 200,130
11/30/2018 7.38 7.63 7.285 7.57 274,937
11/29/2018 7.4 7.54 7.2737 7.34 181,636
11/28/2018 7.1 7.55 6.95 7.46 376,804
11/27/2018 7.19 7.27 7.06 7.07 186,879
11/26/2018 7.33 7.4 7.115 7.32 240,884
11/23/2018 7.22 7.61 7.08 7.22 204,949
11/21/2018 7.33 7.5 7.09 7.32 313,692
11/20/2018 7.25 7.34 7.1 7.27 348,045
11/19/2018 7.3 7.35 7.0537 7.26 268,315
11/16/2018 7.29 7.46 7.16 7.36 279,589
11/15/2018 7.18 7.39 7.05 7.35 380,078
11/14/2018 6.94 7.29 6.92 7.18 492,917
11/13/2018 7.42 7.5 6.795 6.85 720,457
11/12/2018 7.45 7.53 7.1 7.395 479,331
11/09/2018 7.69 7.7097 6.9701 7.45 723,389
11/08/2018 7.78 8 7.5 7.78 585,376
11/07/2018 6.82 7.9 6.27 7.735 1,835,421
11/06/2018 7 7.105 6.65 6.98 992,453
11/05/2018 7.47 7.516 6.87 6.97 977,659
11/02/2018 7.6 7.6499 7.25 7.49 485,401
11/01/2018 7.46 7.63 7.39 7.49 699,990
10/31/2018 7.61 7.79 7.25 7.45 949,787
10/30/2018 7.66 7.85 7.22 7.6 697,668
10/29/2018 7.91 8.08 7.5403 7.7 610,677
10/26/2018 7.96 8.07 7.77 7.84 601,231
10/25/2018 7.85 8.18 7.71 8.05 860,756
10/24/2018 8.53 8.55 7.64 7.7 1,170,190
10/23/2018 8.85 8.9 8.43 8.47 958,740
10/22/2018 9.31 9.39 8.8341 8.99 564,112
10/19/2018 9.38 9.82 9.2 9.34 508,588
10/18/2018 9.59 9.7674 9.32 9.38 355,526
*This data reflects the latest intra-day delayed pricing.
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