Prothena Corporation plc (PRTA)
NASDAQ: PRTA · Real-Time Price · USD
9.14
-0.59 (-6.06%)
Jan 28, 2026, 4:00 PM EST - Market closed
Prothena Corporation Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Jan 28, 2026 | 9.69 | 9.78 | 9.10 | 9.14 | 9.14 | -6.06% | 411,568 |
| Jan 27, 2026 | 9.92 | 10.09 | 9.68 | 9.73 | 9.73 | -2.11% | 391,846 |
| Jan 26, 2026 | 9.94 | 10.26 | 9.77 | 9.94 | 9.94 | -0.60% | 470,287 |
| Jan 23, 2026 | 10.30 | 10.53 | 9.99 | 10.00 | 10.00 | -3.29% | 659,527 |
| Jan 22, 2026 | 9.68 | 10.35 | 9.67 | 10.34 | 10.34 | 6.82% | 512,235 |
| Jan 21, 2026 | 9.28 | 9.72 | 9.24 | 9.68 | 9.68 | 4.65% | 591,125 |
| Jan 20, 2026 | 9.12 | 9.55 | 9.00 | 9.25 | 9.25 | -1.07% | 630,848 |
| Jan 16, 2026 | 9.29 | 9.45 | 8.94 | 9.35 | 9.35 | 0.97% | 740,512 |
| Jan 15, 2026 | 9.16 | 9.28 | 8.91 | 9.26 | 9.26 | 0.65% | 601,967 |
| Jan 14, 2026 | 8.94 | 9.26 | 8.84 | 9.20 | 9.20 | 2.45% | 398,465 |
| Jan 13, 2026 | 8.77 | 9.06 | 8.77 | 8.98 | 8.98 | 0.79% | 470,366 |
| Jan 12, 2026 | 9.16 | 9.16 | 8.65 | 8.91 | 8.91 | -3.05% | 585,586 |
| Jan 9, 2026 | 9.19 | 9.34 | 9.11 | 9.19 | 9.19 | 1.55% | 401,916 |
| Jan 8, 2026 | 9.03 | 9.16 | 8.95 | 9.05 | 9.05 | -0.88% | 375,982 |
| Jan 7, 2026 | 9.00 | 9.47 | 8.96 | 9.13 | 9.13 | 1.78% | 467,536 |
| Jan 6, 2026 | 9.01 | 9.14 | 8.89 | 8.97 | 8.97 | -1.43% | 636,208 |
| Jan 5, 2026 | 9.24 | 9.24 | 8.92 | 9.10 | 9.10 | -1.09% | 539,121 |
| Jan 2, 2026 | 9.56 | 9.69 | 9.07 | 9.20 | 9.20 | -3.66% | 526,643 |
| Dec 31, 2025 | 9.30 | 9.56 | 9.24 | 9.55 | 9.55 | 2.58% | 466,240 |
| Dec 30, 2025 | 9.45 | 9.52 | 9.29 | 9.31 | 9.31 | -1.79% | 353,433 |
| Dec 29, 2025 | 9.49 | 9.55 | 9.34 | 9.48 | 9.48 | -0.63% | 493,479 |
| Dec 26, 2025 | 9.67 | 9.67 | 9.43 | 9.54 | 9.54 | -1.55% | 422,345 |
| Dec 24, 2025 | 9.46 | 9.74 | 9.23 | 9.69 | 9.69 | 2.11% | 236,347 |
| Dec 23, 2025 | 9.53 | 9.59 | 9.29 | 9.49 | 9.49 | -1.96% | 702,990 |
| Dec 22, 2025 | 9.16 | 9.78 | 9.07 | 9.68 | 9.68 | 5.10% | 685,146 |
| Dec 19, 2025 | 9.38 | 9.56 | 9.11 | 9.21 | 9.21 | -1.81% | 4,034,524 |
| Dec 18, 2025 | 9.46 | 9.67 | 9.32 | 9.38 | 9.38 | -0.53% | 525,538 |
| Dec 17, 2025 | 9.78 | 9.91 | 9.39 | 9.43 | 9.43 | -3.28% | 508,027 |
| Dec 16, 2025 | 9.95 | 10.16 | 9.52 | 9.75 | 9.75 | -2.21% | 638,928 |
| Dec 15, 2025 | 10.37 | 10.50 | 9.94 | 9.97 | 9.97 | -3.76% | 852,645 |
| Dec 12, 2025 | 10.40 | 10.49 | 10.20 | 10.36 | 10.36 | 0.29% | 477,695 |
| Dec 11, 2025 | 9.93 | 10.50 | 9.81 | 10.33 | 10.33 | 4.66% | 693,399 |
| Dec 10, 2025 | 10.28 | 10.32 | 9.69 | 9.87 | 9.87 | -4.36% | 961,391 |
| Dec 9, 2025 | 10.70 | 10.80 | 10.23 | 10.32 | 10.32 | -3.82% | 532,153 |
| Dec 8, 2025 | 11.20 | 11.30 | 10.71 | 10.73 | 10.73 | -3.07% | 561,870 |
| Dec 5, 2025 | 11.18 | 11.48 | 10.98 | 11.07 | 11.07 | -0.81% | 434,696 |
| Dec 4, 2025 | 11.04 | 11.57 | 10.95 | 11.16 | 11.16 | -0.09% | 1,161,191 |
| Dec 3, 2025 | 10.40 | 11.48 | 10.31 | 11.17 | 11.17 | 7.92% | 777,465 |
| Dec 2, 2025 | 10.29 | 10.53 | 10.14 | 10.35 | 10.35 | 0.78% | 615,124 |
| Dec 1, 2025 | 10.98 | 11.13 | 10.22 | 10.27 | 10.27 | -4.47% | 648,509 |
| Nov 28, 2025 | 10.52 | 10.83 | 10.46 | 10.75 | 10.75 | 3.07% | 288,728 |
| Nov 26, 2025 | 10.48 | 10.59 | 10.37 | 10.43 | 10.43 | -0.67% | 451,420 |
| Nov 25, 2025 | 10.50 | 10.62 | 10.30 | 10.50 | 10.50 | 0.96% | 515,553 |
| Nov 24, 2025 | 10.55 | 10.91 | 10.29 | 10.40 | 10.40 | -0.76% | 776,169 |
| Nov 21, 2025 | 10.02 | 10.69 | 9.90 | 10.48 | 10.48 | 4.28% | 461,186 |
| Nov 20, 2025 | 10.12 | 10.51 | 9.99 | 10.05 | 10.05 | 0.60% | 460,489 |
| Nov 19, 2025 | 10.29 | 10.49 | 9.97 | 9.99 | 9.99 | -3.57% | 479,680 |
| Nov 18, 2025 | 10.18 | 10.42 | 9.96 | 10.36 | 10.36 | 1.07% | 427,945 |
| Nov 17, 2025 | 9.94 | 10.32 | 9.75 | 10.25 | 10.25 | 3.22% | 827,245 |
| Nov 14, 2025 | 10.04 | 10.33 | 9.93 | 9.93 | 9.93 | -2.46% | 504,462 |