NASDAQ : PTGX
Protagonist Therapeutics, Inc. — Price history
Healthcare · Biotechnology · United States
Last price 144.85 USD (Oct 30, 2026, 4:00 PM EDT) · Market cap 9.37B
Overview · Financial statements · Key statistics · Dividends · Company profile · Price history · Reports
Price history
Protagonist Therapeutics, Inc. (PTGX) closed at 139.37 USD on 2026-11-02. Daily open, high, low, close and volume for recent sessions:
| Date | Open | High | Low | Close | Volume | Change |
|---|---|---|---|---|---|---|
| 2026-11-02 | 145.74 | 146.01 | 139.35 | 139.37 | 486,911 | -3.78% |
| 2026-10-30 | 144.34 | 146 | 142.54 | 144.85 | 322,566 | +0.35% |
| 2026-10-29 | 144.03 | 146.44 | 142.87 | 144.34 | 325,557 | +1.55% |
| 2026-10-28 | 139.35 | 143.26 | 138.29 | 142.14 | 318,458 | +0.72% |
| 2026-10-27 | 140.08 | 142.37 | 137.91 | 141.12 | 865,925 | +0.57% |
| 2026-10-26 | 139.24 | 142 | 137.298 | 140.32 | 823,277 | +1.37% |
| 2026-10-23 | 136.89 | 139.523 | 135 | 138.43 | 409,356 | -0.79% |
| 2026-10-22 | 137.49 | 141.375 | 136.07 | 139.53 | 404,387 | +1.05% |
| 2026-10-21 | 139.71 | 141.85 | 137.963 | 138.08 | 990,174 | +0.07% |
| 2026-10-20 | 135.87 | 140.82 | 134.325 | 137.99 | 774,484 | +2.64% |
| 2026-10-19 | 130.09 | 134.97 | 128.01 | 134.44 | 654,178 | +4.42% |
| 2026-10-16 | 136.16 | 136.555 | 126.39 | 128.75 | 886,812 | -5.71% |
| 2026-10-15 | 136.72 | 139.11 | 136.025 | 136.55 | 707,740 | +0.20% |
| 2026-10-14 | 138.06 | 141.13 | 135.62 | 136.28 | 679,101 | -1.60% |
| 2026-10-13 | 146 | 146 | 137.81 | 138.49 | 1,031,829 | -4.41% |
| 2026-10-12 | 145.83 | 152.185 | 143.69 | 144.88 | 898,518 | +0.80% |
| 2026-10-09 | 139.91 | 146.3 | 138.95 | 143.73 | 763,098 | +2.73% |
| 2026-10-08 | 139.57 | 142.18 | 137.99 | 139.91 | 1,000,048 | -0.72% |
| 2026-10-07 | 137.34 | 144.1 | 137.25 | 140.92 | 927,270 | +1.61% |
| 2026-10-06 | 140.34 | 141 | 136.09 | 138.69 | 635,715 | -1.38% |
| 2026-10-05 | 139.96 | 142.51 | 138.08 | 140.63 | 1,273,822 | +0.41% |
| 2026-10-02 | 140.99 | 141.71 | 138.37 | 140.06 | 760,303 | +0.63% |
| 2026-10-01 | 139.23 | 143.68 | 138.37 | 139.19 | 886,245 | -1.21% |
| 2026-09-30 | 141.6 | 143.74 | 140.44 | 140.89 | 787,658 | -0.06% |
| 2026-09-29 | 143.45 | 144.09 | 138.88 | 140.97 | 508,013 | -1.03% |
| 2026-09-28 | 142.21 | 143.685 | 140.24 | 142.44 | 925,462 | +0.41% |
| 2026-09-25 | 141.81 | 143.45 | 138.23 | 141.86 | 809,292 | +3.29% |
| 2026-09-24 | 138.76 | 140.8 | 134.1 | 137.34 | 989,225 | -0.98% |
| 2026-09-23 | 144.27 | 145.28 | 137.88 | 138.7 | 513,225 | -4.39% |
| 2026-09-22 | 144.64 | 147.71 | 144.5 | 145.07 | 806,176 | +0.06% |
| 2026-09-21 | 143.22 | 145.37 | 141.09 | 144.98 | 822,198 | +1.38% |
| 2026-09-18 | 143.09 | 144.58 | 140.435 | 143 | 1,837,204 | -0.49% |
| 2026-09-17 | 144.39 | 146.5 | 142.31 | 143.7 | 558,901 | +0.60% |
| 2026-09-16 | 144.19 | 146.19 | 140.88 | 142.84 | 507,310 | -0.39% |
| 2026-09-15 | 147.48 | 147.99 | 142 | 143.4 | 637,522 | -2.96% |
| 2026-09-14 | 150.23 | 151.24 | 146.83 | 147.78 | 608,017 | -0.27% |
| 2026-09-11 | 147.18 | 150.48 | 145.82 | 148.18 | 478,038 | +2.08% |
| 2026-09-10 | 143.29 | 146.51 | 142 | 145.16 | 543,129 | +0.05% |
| 2026-09-09 | 146.05 | 151.185 | 144.46 | 145.09 | 530,534 | -0.58% |
| 2026-09-08 | 143.61 | 147.29 | 142 | 145.94 | 700,126 | +0.15% |
| 2026-09-04 | 146.47 | 147.99 | 144.01 | 145.72 | 501,305 | -2.07% |
| 2026-09-03 | 146.68 | 149.49 | 144 | 148.8 | 354,191 | +1.86% |
| 2026-09-02 | 148 | 149.42 | 144.61 | 146.08 | 561,612 | -0.28% |
| 2026-09-01 | 147.75 | 150.34 | 144.725 | 146.49 | 534,144 | -0.85% |
| 2026-08-31 | 143.26 | 149.295 | 141.948 | 147.75 | 567,395 | +2.37% |
| 2026-08-28 | 147.73 | 147.95 | 142.43 | 144.33 | 501,247 | -3.46% |
| 2026-08-27 | 150.35 | 151.68 | 147.11 | 149.5 | 381,590 | -1.32% |
| 2026-08-26 | 150.36 | 152.07 | 147.69 | 151.5 | 335,462 | +0.60% |
| 2026-08-25 | 155.84 | 157.98 | 150.09 | 150.59 | 664,526 | -2.67% |
| 2026-08-24 | 154.32 | 158.08 | 149.94 | 154.72 | 483,342 | +0.26% |
| 2026-08-21 | 152.1 | 154.95 | 150.82 | 154.32 | 402,542 | +2.41% |
| 2026-08-20 | 152.45 | 155.25 | 148.275 | 150.69 | 518,560 | -2.74% |
| 2026-08-19 | 160.81 | 160.81 | 154.22 | 154.94 | 786,052 | -1.53% |
| 2026-08-18 | 157.96 | 160 | 156.81 | 157.34 | 471,648 | -0.81% |
| 2026-08-17 | 155.11 | 158.95 | 153.6 | 158.62 | 506,959 | +2.27% |
| 2026-08-14 | 150.23 | 155.53 | 149.17 | 155.1 | 426,260 | +2.43% |
| 2026-08-13 | 153.15 | 154.99 | 150.92 | 151.42 | 444,785 | -0.39% |
| 2026-08-12 | 148.21 | 152.7 | 147.33 | 152.01 | 417,204 | +2.51% |
| 2026-08-11 | 151.88 | 151.88 | 147.37 | 148.29 | 306,573 | -1.14% |
| 2026-08-10 | 149.31 | 151.6 | 147.396 | 150 | 545,973 | +2.83% |
| 2026-08-07 | 146.18 | 147.32 | 144.44 | 145.87 | 321,084 | -0.21% |
| 2026-08-06 | 145.01 | 148 | 139.95 | 146.18 | 837,630 | +6.45% |
| 2026-08-05 | 137.49 | 138.083 | 135.39 | 137.32 | 430,528 | +1.11% |
| 2026-08-04 | 133.02 | 138.053 | 132.26 | 135.81 | 634,672 | +2.67% |
| 2026-08-03 | 135.78 | 135.975 | 131.68 | 132.28 | 451,166 | -3.19% |
| 2026-07-31 | 138.36 | 138.37 | 131.69 | 136.64 | 548,764 | -1.44% |
| 2026-07-30 | 131.77 | 138.95 | 130.63 | 138.64 | 556,392 | +4.24% |
| 2026-07-29 | 136.9 | 137.43 | 132.72 | 133 | 560,653 | -2.81% |
| 2026-07-28 | 136.69 | 137 | 133.2 | 136.84 | 282,383 | +0.94% |
| 2026-07-27 | 136.11 | 139.92 | 135.425 | 135.56 | 416,781 | -0.40% |
| 2026-07-24 | 136.11 | 137.2 | 133.78 | 136.11 | 298,402 | +0.50% |
| 2026-07-23 | 133.79 | 137.325 | 132 | 135.43 | 605,784 | -0.01% |
| 2026-07-22 | 139.45 | 139.45 | 134.42 | 135.44 | 710,439 | -2.08% |
| 2026-07-21 | 133.34 | 139.72 | 131.05 | 138.31 | 580,567 | +3.01% |
| 2026-07-20 | 141.79 | 143.29 | 133.64 | 134.27 | 762,738 | -4.71% |
| 2026-07-17 | 131.37 | 141.08 | 131.37 | 140.91 | 519,116 | +6.73% |
| 2026-07-16 | 135.21 | 136.555 | 131.35 | 132.02 | 602,064 | -2.54% |
| 2026-07-15 | 128 | 139.22 | 126.97 | 135.46 | 836,109 | +3.19% |
| 2026-07-14 | 131.89 | 131.95 | 128.68 | 131.27 | 564,974 | +1.06% |
| 2026-07-13 | 130.05 | 131.36 | 125.323 | 129.89 | 541,071 | -1.16% |
| 2026-07-10 | 137.12 | 137.12 | 130.64 | 131.42 | 1,060,849 | -4.52% |
| 2026-07-09 | 139.26 | 141.1 | 136.985 | 137.64 | 1,613,332 | -1.73% |
| 2026-07-08 | 139.5 | 140.95 | 136.08 | 140.07 | 931,358 | -0.55% |
| 2026-07-07 | 132.59 | 141.08 | 130.69 | 140.85 | 1,374,383 | +7.11% |
| 2026-07-06 | 131.25 | 132.785 | 128.15 | 131.5 | 640,087 | -0.09% |
| 2026-07-02 | 125.89 | 131.87 | 125.24 | 131.62 | 708,390 | +5.15% |
| 2026-07-01 | 122.96 | 126.04 | 122.48 | 125.17 | 521,773 | +2.11% |
| 2026-06-30 | 122.04 | 124.715 | 119.57 | 122.58 | 560,872 | +0.78% |
| 2026-06-29 | 121.34 | 126.59 | 118.27 | 121.63 | 741,106 | -0.21% |
| 2026-06-26 | 122 | 123.43 | 118.31 | 121.88 | 2,593,942 | -0.61% |
| 2026-06-25 | 122.31 | 126.25 | 121.48 | 122.63 | 1,048,006 | +0.39% |
| 2026-06-24 | 119.38 | 124.8 | 118.805 | 122.15 | 1,132,431 | +2.68% |
| 2026-06-23 | 114.66 | 119.85 | 114.56 | 118.96 | 700,455 | +3.42% |
| 2026-06-22 | 113.24 | 116.57 | 113.24 | 115.03 | 1,193,688 | +1.92% |
| 2026-06-18 | 112.88 | 114.485 | 111.17 | 112.86 | 1,533,672 | +1.27% |
| 2026-06-17 | 110.84 | 113.47 | 110.11 | 111.44 | 742,534 | +0.72% |
| 2026-06-16 | 112.83 | 113.66 | 108.53 | 110.64 | 504,793 | -1.62% |
| 2026-06-15 | 109.1 | 112.77 | 109.1 | 112.46 | 536,301 | +2.44% |
| 2026-06-12 | 109.85 | 111.775 | 109.6 | 109.78 | 448,850 | -0.01% |
| 2026-06-11 | 106.28 | 110.82 | 106.28 | 109.79 | 564,250 | +3.80% |
| 2026-06-10 | 105.5 | 111.45 | 104.89 | 105.77 | 770,494 | -0.09% |
| 2026-06-09 | 99.76 | 106.48 | 98.08 | 105.87 | 878,601 | +8.00% |
| 2026-06-08 | 98.95 | 101.16 | 96.7 | 98.03 | 567,714 | +0.67% |
| 2026-06-05 | 103.14 | 103.29 | 96.38 | 97.38 | 887,396 | -5.26% |
| 2026-06-04 | 96.39 | 103.545 | 96.14 | 102.79 | 658,834 | +7.74% |
| 2026-06-03 | 93.93 | 95.61 | 93 | 95.41 | 579,220 | +2.34% |
| 2026-06-02 | 93.84 | 97.71 | 92.75 | 93.23 | 723,588 | -1.78% |
| 2026-06-01 | 97.88 | 98.5 | 93.5 | 94.92 | 817,044 | -4.66% |
| 2026-05-29 | 100.64 | 102.4 | 98.84 | 99.56 | 597,778 | -0.85% |
| 2026-05-28 | 102.74 | 103.71 | 99.425 | 100.41 | 551,512 | -1.76% |
| 2026-05-27 | 100.05 | 102.49 | 98.94 | 102.21 | 404,793 | +2.23% |
| 2026-05-26 | 100.03 | 100.8 | 97.926 | 99.98 | 360,762 | +0.80% |
| 2026-05-22 | 102.01 | 102.415 | 98.89 | 99.19 | 393,915 | -2.76% |
| 2026-05-21 | 101.13 | 103.43 | 98.601 | 102.01 | 402,918 | +1.12% |
| 2026-05-20 | 99.03 | 101.9 | 98.37 | 100.88 | 371,678 | +2.55% |
| 2026-05-19 | 100.25 | 100.26 | 96.692 | 98.37 | 492,707 | -2.35% |
| 2026-05-18 | 103.22 | 104.16 | 100.58 | 100.74 | 447,230 | -1.41% |
| 2026-05-15 | 104.22 | 104.39 | 101.72 | 102.18 | 560,751 | -3.19% |
| 2026-05-14 | 104.31 | 105.72 | 101.62 | 105.55 | 426,527 | +1.61% |
| 2026-05-13 | 99.58 | 104.195 | 98.22 | 103.88 | 518,200 | +3.93% |