Protagonist Therapeutics, Inc. (PTGX) NASDAQ
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Currency In USD
If you invested $1000 in Protagonist Therapeutics, Inc. (PTGX) 10 years ago, it would be worth $6,296.48 as of October 23, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $4,367.14, while $1000 invested 1 year ago would be worth $1,885.8. This corresponds to total returns of 529.65%, 336.71%, 88.58%, respectively, with annualized returns of 20.2%, 34.31%, 88.58%.
Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.
Date Range:
| Date | Open | Close | Adj Close | High | Low | Volume |
|---|---|---|---|---|---|---|
| October 22, 2026 | 137.49 | 139.53 | 139.53 | 141.38 | 136.07 | 382,016 |
| October 21, 2026 | 139.71 | 138.08 | 138.08 | 141.85 | 137.96 | 979,241 |
| October 20, 2026 | 135.87 | 137.99 | 137.99 | 140.82 | 134.32 | 764,376 |
| October 19, 2026 | 130.09 | 134.44 | 134.44 | 134.97 | 128.01 | 652,739 |
| October 16, 2026 | 136.16 | 128.75 | 128.75 | 136.56 | 126.39 | 866,146 |
| October 15, 2026 | 136.72 | 136.55 | 136.55 | 139.11 | 136.03 | 707,734 |
| October 14, 2026 | 138.06 | 136.28 | 136.28 | 141.13 | 135.62 | 679,038 |
| October 13, 2026 | 146 | 138.49 | 138.49 | 146 | 137.81 | 1.03M |
| October 12, 2026 | 145.83 | 144.88 | 144.88 | 152.19 | 143.69 | 898,504 |
| October 09, 2026 | 139.91 | 143.73 | 143.73 | 146.3 | 138.95 | 760,835 |
| October 08, 2026 | 139.57 | 139.91 | 139.91 | 142.18 | 137.99 | 999,996 |
| October 07, 2026 | 137.34 | 140.92 | 140.92 | 144.1 | 137.25 | 927,267 |
| October 06, 2026 | 140.34 | 138.69 | 138.69 | 141 | 136.09 | 632,753 |
| October 05, 2026 | 139.96 | 140.63 | 140.63 | 142.51 | 138.08 | 1.27M |
| October 02, 2026 | 140.99 | 140.06 | 140.06 | 141.71 | 138.37 | 646,499 |
| October 01, 2026 | 139.23 | 139.19 | 139.19 | 143.68 | 138.37 | 886,233 |
| September 30, 2026 | 141.6 | 140.89 | 140.89 | 143.74 | 140.44 | 787,656 |
| September 29, 2026 | 143.45 | 140.97 | 140.97 | 144.09 | 138.88 | 508,011 |
| September 28, 2026 | 142.21 | 142.44 | 142.44 | 143.69 | 140.24 | 925,456 |
| September 25, 2026 | 141.81 | 141.86 | 141.86 | 143.45 | 138.23 | 809,167 |
| September 24, 2026 | 138.76 | 137.34 | 137.34 | 140.8 | 134.1 | 969,839 |
| September 23, 2026 | 144.27 | 138.7 | 138.7 | 145.28 | 137.88 | 513,152 |
| September 22, 2026 | 144.64 | 145.07 | 145.07 | 147.71 | 144.5 | 802,034 |
| September 21, 2026 | 143.22 | 144.98 | 144.98 | 145.37 | 141.09 | 735,077 |
| September 18, 2026 | 143.09 | 143 | 143 | 144.58 | 140.44 | 1.82M |
| September 17, 2026 | 144.39 | 143.7 | 143.7 | 146.5 | 142.31 | 558,897 |
| September 16, 2026 | 144.19 | 142.84 | 142.84 | 146.19 | 140.88 | 506,951 |
| September 15, 2026 | 147.48 | 143.4 | 143.4 | 147.99 | 142 | 604,907 |
| September 11, 2026 | 147.18 | 148.18 | 148.18 | 150.48 | 145.82 | 478,019 |
| September 10, 2026 | 143.29 | 145.16 | 145.16 | 146.51 | 142 | 537,977 |
| September 09, 2026 | 146.05 | 145.09 | 145.09 | 151.19 | 144.46 | 530,488 |
| September 08, 2026 | 143.61 | 145.94 | 145.94 | 147.29 | 142 | 635,096 |
| September 04, 2026 | 146.47 | 145.72 | 145.72 | 147.99 | 144.01 | 500,978 |
| September 03, 2026 | 146.68 | 148.8 | 148.8 | 149.49 | 144 | 353,885 |
| September 02, 2026 | 148 | 146.08 | 146.08 | 149.42 | 144.61 | 561,501 |
| September 01, 2026 | 147.75 | 146.49 | 146.49 | 150.34 | 144.73 | 534,120 |
| August 31, 2026 | 143.26 | 147.75 | 147.75 | 149.29 | 141.95 | 567,259 |
| August 28, 2026 | 147.73 | 144.33 | 144.33 | 147.95 | 142.43 | 499,771 |
| August 27, 2026 | 150.35 | 149.5 | 149.5 | 151.68 | 147.11 | 381,588 |
| August 26, 2026 | 150.36 | 151.5 | 151.5 | 152.07 | 147.69 | 335,461 |
| August 25, 2026 | 155.84 | 150.59 | 150.59 | 157.98 | 150.09 | 664,522 |
| August 24, 2026 | 154.32 | 154.72 | 154.72 | 158.08 | 149.94 | 483,338 |
| August 21, 2026 | 152.1 | 154.32 | 154.32 | 154.95 | 150.82 | 402,517 |
| August 20, 2026 | 152.45 | 150.69 | 150.69 | 155.25 | 148.28 | 518,555 |
| August 19, 2026 | 160.81 | 154.94 | 154.94 | 160.81 | 154.22 | 785,876 |
| August 18, 2026 | 157.96 | 157.34 | 157.34 | 160 | 156.81 | 471,646 |
| August 17, 2026 | 155.11 | 158.62 | 158.62 | 158.95 | 153.6 | 506,942 |
| August 14, 2026 | 150.23 | 155.1 | 155.1 | 155.53 | 149.17 | 426,255 |
| August 13, 2026 | 153.15 | 151.42 | 151.42 | 154.99 | 150.92 | 444,781 |
| August 12, 2026 | 148.21 | 152.01 | 152.01 | 152.7 | 147.33 | 416,320 |
| August 11, 2026 | 151.88 | 148.29 | 148.29 | 151.88 | 147.37 | 306,243 |
| August 10, 2026 | 149.31 | 150 | 150 | 151.6 | 147.4 | 545,739 |
| August 07, 2026 | 146.18 | 145.87 | 145.87 | 147.32 | 144.44 | 321,055 |
| August 06, 2026 | 145.01 | 146.18 | 146.18 | 148 | 139.95 | 837,603 |
| August 05, 2026 | 137.49 | 137.32 | 137.32 | 138.08 | 135.39 | 428,283 |
| August 04, 2026 | 133.02 | 135.81 | 135.81 | 138.05 | 132.26 | 634,671 |
| August 03, 2026 | 135.78 | 132.28 | 132.28 | 135.98 | 131.68 | 450,476 |
| July 31, 2026 | 138.36 | 136.64 | 136.64 | 138.37 | 131.69 | 548,760 |
| July 30, 2026 | 131.77 | 138.64 | 138.64 | 138.95 | 130.63 | 545,519 |
| July 29, 2026 | 136.9 | 133 | 133 | 137.43 | 132.72 | 560,642 |