5 DAY PERFORMANCE
+9.85%
1 MONTH PERFORMANCE
-0.20%
3 MONTH PERFORMANCE
+11.22%
6 MONTH PERFORMANCE
+3.37%
YEAR-TO-DATE PERFORMANCE
+2.72%
1 YEAR PERFORMANCE
+61.88%
Prothena Corporation plc Stock Chart
Share Price History
| Date | Opening Price | Closing Price | High | Low | Volume | Market Capitalization |
|---|---|---|---|---|---|---|
| 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 |
| 05/06/2026 | $11.19 | $11.18 (-0.09%) | $11.30 | $11.02 | 333.90 K | $600.46 M |
| 05/05/2026 | $10.89 | $11.19 (2.75%) | $11.25 | $10.89 | 306.82 K | $600.99 M |
| 05/04/2026 | $10.58 | $10.79 (1.98%) | $11.00 | $10.55 | 592.40 K | $579.51 M |
| 05/01/2026 | $11.04 | $10.64 (-3.62%) | $11.14 | $10.64 | 516.35 K | $571.45 M |
| 04/30/2026 | $10.89 | $11.06 (1.56%) | $11.12 | $10.84 | 319.52 K | $594.01 M |
| 04/29/2026 | $11.46 | $10.87 (-5.15%) | $11.46 | $10.74 | 397.88 K | $583.81 M |
| 04/28/2026 | $10.84 | $11.51 (6.18%) | $11.57 | $10.83 | 439.90 K | $618.18 M |
| 04/27/2026 | $10.71 | $10.79 (0.75%) | $11.12 | $10.71 | 314.34 K | $579.51 M |
| 04/24/2026 | $10.65 | $10.75 (0.94%) | $10.82 | $10.40 | 287.93 K | $577.36 M |
| 04/23/2026 | $10.69 | $10.73 (0.37%) | $11.07 | $10.60 | 474.70 K | $576.29 M |
| 04/22/2026 | $10.69 | $10.72 (0.28%) | $10.85 | $10.61 | 350.80 K | $575.75 M |
| 04/21/2026 | $10.78 | $10.67 (-1.02%) | $10.78 | $10.48 | 451.10 K | $573.06 M |
| 04/20/2026 | $10.82 | $10.79 (-0.28%) | $10.97 | $10.77 | 333.30 K | $579.51 M |
| 04/17/2026 | $10.71 | $10.90 (1.77%) | $10.99 | $10.70 | 486.50 K | $585.42 M |
| 04/16/2026 | $10.78 | $10.52 (-2.41%) | $10.85 | $10.45 | 298.91 K | $565.01 M |
| 04/15/2026 | $10.62 | $10.82 (1.88%) | $10.87 | $10.51 | 409.93 K | $581.12 M |
| 04/14/2026 | $10.34 | $10.61 (2.61%) | $10.67 | $10.34 | 370.95 K | $569.84 M |
| 04/13/2026 | $10.49 | $10.31 (-1.72%) | $10.55 | $10.18 | 334.10 K | $553.73 M |
| 04/10/2026 | $10.60 | $10.50 (-0.94%) | $10.60 | $10.37 | 319.03 K | $563.93 M |
| 04/09/2026 | $10.47 | $10.58 (1.05%) | $10.70 | $10.38 | 414.71 K | $568.23 M |
| 04/08/2026 | $10.48 | $10.65 (1.62%) | $10.68 | $10.29 | 454.50 K | $571.99 M |
| 04/07/2026 | $9.98 | $10.36 (3.81%) | $10.37 | $9.80 | 481.40 K | $556.41 M |
| 04/06/2026 | $9.91 | $10.04 (1.31%) | $10.11 | $9.88 | 412.51 K | $539.23 M |
| 04/02/2026 | $9.75 | $9.86 (1.13%) | $10.08 | $9.51 | 849.12 K | $529.56 M |
| 04/01/2026 | $9.84 | $10.03 (1.93%) | $10.12 | $9.80 | 593.30 K | $538.69 M |
| 03/31/2026 | $9.33 | $9.72 (4.18%) | $9.86 | $9.33 | 671.53 K | $522.04 M |
| 03/30/2026 | $9.24 | $9.25 (0.11%) | $9.50 | $9.11 | 416.20 K | $496.80 M |
| 03/27/2026 | $9.42 | $9.26 (-1.7%) | $9.62 | $9.14 | 430.10 K | $497.34 M |
| 03/26/2026 | $9.19 | $9.52 (3.59%) | $9.68 | $9.16 | 452.74 K | $511.30 M |
| 03/25/2026 | $8.84 | $9.31 (5.32%) | $9.32 | $8.82 | 543.70 K | $500.02 M |
| 03/24/2026 | $8.75 | $8.73 (-0.23%) | $8.96 | $8.49 | 534.73 K | $468.87 M |
| 03/23/2026 | $8.83 | $8.82 (-0.11%) | $9.04 | $8.76 | 487.60 K | $473.70 M |
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