Prothena Corporation (PRTA)
NASDAQ: PRTA
· Real-Time Price · USD
8.49
-0.06 (-0.70%)
At close: Sep 08, 2025, 3:59 PM
8.49
0.00%
After-hours: Sep 08, 2025, 04:10 PM EDT
PRTA Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj Close | % Change | Volume |
|---|---|---|---|---|---|---|---|
| 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 |
| Aug 28, 2025 | 8.22 | 8.58 | 8.05 | 8.24 | 8.24 | -3.74% | 1,711,300 |
| Aug 27, 2025 | 8.36 | 8.73 | 8.35 | 8.56 | 8.56 | 2.51% | 1,021,264 |
| Aug 26, 2025 | 8.35 | 8.56 | 8.30 | 8.35 | 8.35 | -0.36% | 1,653,408 |
| Aug 25, 2025 | 8.76 | 8.79 | 8.35 | 8.38 | 8.38 | -4.45% | 613,200 |
| Aug 22, 2025 | 8.63 | 8.97 | 8.52 | 8.77 | 8.77 | 2.45% | 1,244,739 |
| Aug 21, 2025 | 8.41 | 8.57 | 8.32 | 8.56 | 8.56 | 0.47% | 858,008 |
| Aug 20, 2025 | 8.50 | 8.60 | 8.28 | 8.52 | 8.52 | 0.00% | 639,200 |
| Aug 19, 2025 | 8.51 | 8.70 | 8.35 | 8.52 | 8.52 | -0.12% | 829,930 |
| Aug 18, 2025 | 8.36 | 8.66 | 8.30 | 8.53 | 8.53 | 3.39% | 1,164,541 |
| Aug 15, 2025 | 8.11 | 8.34 | 8.00 | 8.25 | 8.25 | 2.36% | 1,130,318 |
| Aug 14, 2025 | 8.02 | 8.12 | 7.78 | 8.06 | 8.06 | 0.12% | 590,370 |
| Aug 13, 2025 | 7.60 | 8.17 | 7.58 | 8.05 | 8.05 | 6.76% | 1,598,596 |
| Aug 12, 2025 | 7.77 | 7.96 | 7.50 | 7.54 | 7.54 | -1.69% | 926,650 |
| Aug 11, 2025 | 7.70 | 7.85 | 7.39 | 7.67 | 7.67 | -0.26% | 1,147,200 |
| Aug 8, 2025 | 7.74 | 7.94 | 7.64 | 7.69 | 7.69 | -0.39% | 921,633 |