5 DAY PERFORMANCE
+20.81%
1 MONTH PERFORMANCE
+1.34%
3 MONTH PERFORMANCE
-6.75%
6 MONTH PERFORMANCE
+10.10%
YEAR-TO-DATE PERFORMANCE
+2.72%
1 YEAR PERFORMANCE
+27.07%
Prothena Corporation plc Stock Chart
Share Price History
| Date | Opening Price | Closing Price | High | Low | Volume | Market Capitalization |
|---|---|---|---|---|---|---|
| 08/07/2026 | $8.54 | $8.68 (1.64%) | $8.77 | $8.06 | 131.28 K | |
| 08/06/2026 | $8.50 | $8.58 (0.94%) | $8.77 | $8.33 | 418.69 K | $447.40 M |
| 08/05/2026 | $8.49 | $8.49 (0%) | $8.74 | $8.40 | 489.50 K | $442.71 M |
| 08/04/2026 | $8.33 | $8.49 (1.92%) | $8.58 | $8.33 | 329.91 K | $442.71 M |
| 08/03/2026 | $8.17 | $8.33 (1.96%) | $8.38 | $8.04 | 566.00 K | $434.37 M |
| 07/31/2026 | $8.41 | $8.12 (-3.45%) | $8.51 | $8.00 | 545.50 K | $436.11 M |
| 07/30/2026 | $8.50 | $8.41 (-1.06%) | $8.56 | $8.26 | 502.23 K | $451.68 M |
| 07/29/2026 | $8.45 | $8.56 (1.3%) | $8.68 | $8.39 | 646.16 K | $459.74 M |
| 07/28/2026 | $8.70 | $8.56 (-1.61%) | $8.78 | $8.36 | 802.26 K | $459.74 M |
| 07/27/2026 | $8.88 | $8.70 (-2.03%) | $9.13 | $8.66 | 704.71 K | $467.26 M |
| 07/24/2026 | $8.54 | $8.75 (2.46%) | $8.82 | $8.35 | 576.84 K | $469.95 M |
| 07/23/2026 | $8.27 | $8.53 (3.14%) | $8.63 | $8.23 | 532.21 K | $458.13 M |
| 07/22/2026 | $8.69 | $8.44 (-2.88%) | $8.79 | $8.43 | 542.55 K | $453.30 M |
| 07/21/2026 | $8.72 | $8.75 (0.34%) | $8.81 | $8.51 | 647.64 K | $469.95 M |
| 07/20/2026 | $8.66 | $8.67 (0.12%) | $8.85 | $8.55 | 549.63 K | $465.65 M |
| 07/17/2026 | $8.40 | $8.66 (3.1%) | $8.80 | $8.28 | 408.40 K | $465.11 M |
| 07/16/2026 | $8.40 | $8.47 (0.83%) | $8.66 | $8.07 | 659.70 K | $454.91 M |
| 07/15/2026 | $8.58 | $8.43 (-1.75%) | $8.63 | $8.42 | 504.70 K | $452.76 M |
| 07/14/2026 | $8.77 | $8.64 (-1.48%) | $8.88 | $8.61 | 530.32 K | $464.04 M |
| 07/13/2026 | $9.17 | $8.83 (-3.71%) | $9.19 | $8.76 | 781.73 K | $474.24 M |
| 07/10/2026 | $9.64 | $9.24 (-4.15%) | $9.82 | $9.03 | 505.13 K | $496.26 M |
| 07/09/2026 | $9.83 | $9.64 (-1.93%) | $10.02 | $9.55 | 482.23 K | $517.75 M |
| 07/08/2026 | $9.66 | $9.85 (1.97%) | $9.86 | $9.56 | 444.25 K | $529.02 M |
| 07/07/2026 | $9.62 | $9.68 (0.62%) | $9.78 | $9.33 | 520.54 K | $519.89 M |
| 07/06/2026 | $9.65 | $9.50 (-1.55%) | $9.84 | $9.47 | 403.74 K | $510.23 M |
| 07/02/2026 | $9.61 | $9.69 (0.83%) | $10.15 | $9.57 | 462.90 K | $520.43 M |
| 07/01/2026 | $9.74 | $9.58 (-1.64%) | $10.00 | $9.47 | 436.70 K | $514.52 M |
| 06/30/2026 | $9.96 | $9.79 (-1.71%) | $10.04 | $9.75 | 339.64 K | $525.80 M |
| 06/29/2026 | $10.00 | $9.97 (-0.3%) | $10.12 | $9.78 | 420.30 K | $535.47 M |
| 06/26/2026 | $9.32 | $10.02 (7.51%) | $10.09 | $9.28 | 1.91 M | $538.15 M |
| 06/25/2026 | $9.42 | $9.27 (-1.59%) | $9.58 | $9.19 | 964.90 K | $497.87 M |
| 06/24/2026 | $9.57 | $9.40 (-1.78%) | $9.87 | $9.26 | 477.91 K | $504.86 M |
| 06/23/2026 | $9.12 | $9.55 (4.71%) | $9.77 | $9.12 | 458.04 K | $512.91 M |
| 06/22/2026 | $8.90 | $9.15 (2.81%) | $9.27 | $8.89 | 612.54 K | $491.43 M |
| 06/18/2026 | $8.63 | $8.93 (3.48%) | $9.15 | $8.52 | 1.39 M | $479.61 M |
| 06/17/2026 | $8.39 | $8.49 (1.19%) | $8.72 | $8.39 | 543.00 K | $455.98 M |
| 06/16/2026 | $8.16 | $8.29 (1.59%) | $8.35 | $7.85 | 586.30 K | $445.24 M |
| 06/15/2026 | $8.69 | $8.15 (-6.21%) | $8.77 | $7.93 | 622.61 K | $437.72 M |
| 06/12/2026 | $8.26 | $8.25 (-0.12%) | $8.45 | $8.23 | 315.41 K | $443.09 M |
| 06/11/2026 | $7.89 | $8.26 (4.69%) | $8.46 | $7.73 | 634.23 K | $443.63 M |
| 06/10/2026 | $8.42 | $7.91 (-6.06%) | $8.59 | $7.89 | 457.00 K | $424.83 M |
| 06/09/2026 | $8.56 | $8.47 (-1.05%) | $8.87 | $8.35 | 493.50 K | $454.91 M |
| 06/08/2026 | $8.80 | $8.56 (-2.73%) | $8.89 | $8.53 | 313.21 K | $459.74 M |
| 06/05/2026 | $9.25 | $8.79 (-4.97%) | $9.38 | $8.63 | 656.31 K | $472.09 M |
| 06/04/2026 | $9.03 | $9.25 (2.44%) | $9.45 | $9.03 | 504.90 K | $496.80 M |
| 06/03/2026 | $9.21 | $8.92 (-3.15%) | $9.21 | $8.73 | 593.20 K | $479.08 M |
| 06/02/2026 | $9.59 | $9.19 (-4.17%) | $9.59 | $9.12 | 439.01 K | $493.58 M |
| 06/01/2026 | $10.03 | $9.59 (-4.39%) | $10.07 | $9.49 | 457.81 K | $515.06 M |
| 05/29/2026 | $9.93 | $10.18 (2.52%) | $10.24 | $9.80 | 501.43 K | $546.75 M |
| 05/28/2026 | $9.95 | $9.98 (0.3%) | $10.05 | $9.93 | 281.82 K | $536.01 M |
| 05/27/2026 | $10.11 | $10.03 (-0.79%) | $10.26 | $10.01 | 616.20 K | $538.69 M |
| 05/26/2026 | $9.84 | $10.06 (2.24%) | $10.07 | $9.45 | 918.67 K | $540.30 M |
| 05/22/2026 | $9.36 | $9.83 (5.02%) | $10.00 | $9.36 | 510.90 K | $527.95 M |
| 05/21/2026 | $9.16 | $9.41 (2.73%) | $9.42 | $9.04 | 388.74 K | $505.39 M |
| 05/20/2026 | $9.09 | $9.35 (2.86%) | $9.41 | $9.09 | 624.90 K | $502.17 M |
| 05/19/2026 | $9.61 | $9.07 (-5.62%) | $9.84 | $9.02 | 627.31 K | $487.13 M |
| 05/18/2026 | $9.66 | $9.59 (-0.72%) | $10.09 | $9.53 | 651.00 K | $515.06 M |
| 05/15/2026 | $9.73 | $9.76 (0.31%) | $9.86 | $9.46 | 700.10 K | $524.19 M |
| 05/14/2026 | $9.60 | $9.86 (2.71%) | $9.88 | $9.42 | 452.44 K | $529.56 M |
| 05/13/2026 | $9.33 | $9.60 (2.89%) | $9.73 | $9.28 | 530.80 K | $515.60 M |
| 05/12/2026 | $9.67 | $9.43 (-2.48%) | $9.82 | $9.29 | 495.10 K | $506.47 M |
| 05/11/2026 | $10.79 | $9.67 (-10.38%) | $10.88 | $9.46 | 932.83 K | $519.36 M |
| 05/08/2026 | $11.00 | $10.73 (-2.45%) | $11.80 | $10.62 | 798.77 K | $576.29 M |
| 05/07/2026 | $11.10 | $10.52 (-5.23%) | $11.21 | $10.40 | 443.14 K | $565.01 M |
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