Prothena Corporation (PRTA)
NASDAQ: PRTA
· Real-Time Price · USD
9.41
0.05 (0.53%)
At close: Sep 26, 2025, 3:59 PM
8.74
-7.12%
After-hours: Sep 26, 2025, 05:03 PM EDT
PRTA Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj Close | % Change | Volume |
|---|---|---|---|---|---|---|---|
| Sep 26, 2025 | 9.29 | 9.46 | 9.02 | 9.41 | 9.41 | 0.53% | 715,256 |
| Sep 25, 2025 | 9.20 | 9.56 | 9.04 | 9.36 | 9.36 | 0.43% | 1,566,800 |
| Sep 24, 2025 | 8.32 | 9.34 | 8.30 | 9.32 | 9.32 | 12.15% | 1,116,744 |
| Sep 23, 2025 | 8.28 | 8.35 | 8.14 | 8.31 | 8.31 | 0.24% | 404,700 |
| Sep 22, 2025 | 8.12 | 8.43 | 8.02 | 8.29 | 8.29 | 2.73% | 511,942 |
| Sep 19, 2025 | 8.20 | 8.23 | 8.07 | 8.07 | 8.07 | -1.34% | 910,700 |
| Sep 18, 2025 | 8.18 | 8.35 | 8.05 | 8.18 | 8.18 | 1.49% | 459,057 |
| Sep 17, 2025 | 8.19 | 8.39 | 8.04 | 8.06 | 8.06 | -1.23% | 507,619 |
| Sep 16, 2025 | 8.12 | 8.36 | 8.12 | 8.16 | 8.16 | 0.00% | 362,500 |
| Sep 15, 2025 | 8.18 | 8.35 | 8.10 | 8.16 | 8.16 | -0.61% | 713,700 |
| Sep 12, 2025 | 8.43 | 8.49 | 8.20 | 8.21 | 8.21 | -2.61% | 551,100 |
| Sep 11, 2025 | 8.24 | 8.50 | 8.19 | 8.43 | 8.43 | 1.44% | 711,934 |
| Sep 10, 2025 | 8.34 | 8.47 | 8.20 | 8.31 | 8.31 | -0.36% | 518,651 |
| Sep 9, 2025 | 8.50 | 8.50 | 8.10 | 8.34 | 8.34 | -1.77% | 916,203 |
| Sep 8, 2025 | 8.61 | 8.62 | 8.30 | 8.49 | 8.49 | -0.70% | 622,009 |
| Sep 5, 2025 | 8.24 | 8.59 | 8.21 | 8.55 | 8.55 | 4.14% | 1,128,200 |
| Sep 4, 2025 | 8.45 | 8.46 | 8.11 | 8.21 | 8.21 | -2.15% | 961,600 |
| Sep 3, 2025 | 8.24 | 8.47 | 8.16 | 8.39 | 8.39 | 1.45% | 1,210,436 |
| Sep 2, 2025 | 8.17 | 8.43 | 8.06 | 8.27 | 8.27 | 0.85% | 1,048,928 |
| Aug 29, 2025 | 8.27 | 8.34 | 8.08 | 8.20 | 8.20 | -0.49% | 903,119 |