5 DAY PERFORMANCE
-9.40%
1 MONTH PERFORMANCE
-2.69%
3 MONTH PERFORMANCE
-13.55%
6 MONTH PERFORMANCE
+31.69%
YEAR-TO-DATE PERFORMANCE
-5.13%
1 YEAR PERFORMANCE
-38.37%
Prothena Corporation plc Stock Chart
Share Price History
| Date | Opening Price | Closing Price | High | Low | Volume | Market Capitalization |
|---|---|---|---|---|---|---|
| 01/29/2026 | $9.15 | $9.06 (-0.98%) | $9.50 | $8.95 | 345.48 K | $487.70 M |
| 01/28/2026 | $9.69 | $9.14 (-5.68%) | $9.78 | $9.10 | 422.20 K | $492.01 M |
| 01/27/2026 | $9.92 | $9.73 (-1.92%) | $10.09 | $9.68 | 393.15 K | $523.77 M |
| 01/26/2026 | $9.94 | $9.94 (0%) | $10.26 | $9.77 | 470.30 K | $535.07 M |
| 01/23/2026 | $10.30 | $10.00 (-2.91%) | $10.53 | $9.99 | 659.53 K | $538.30 M |
| 01/22/2026 | $9.68 | $10.34 (6.82%) | $10.35 | $9.66 | 512.70 K | $556.60 M |
| 01/21/2026 | $9.28 | $9.68 (4.31%) | $9.72 | $9.24 | 591.45 K | $521.07 M |
| 01/20/2026 | $9.12 | $9.25 (1.43%) | $9.55 | $9.00 | 630.86 K | $497.93 M |
| 01/16/2026 | $9.29 | $9.35 (0.65%) | $9.45 | $8.94 | 761.50 K | $503.31 M |
| 01/15/2026 | $9.16 | $9.26 (1.09%) | $9.28 | $8.91 | 602.00 K | $498.47 M |
| 01/14/2026 | $8.94 | $9.20 (2.91%) | $9.26 | $8.84 | 398.50 K | $495.24 M |
| 01/13/2026 | $8.77 | $8.98 (2.39%) | $9.06 | $8.77 | 470.40 K | $483.39 M |
| 01/12/2026 | $9.16 | $8.91 (-2.73%) | $9.16 | $8.65 | 585.60 K | $479.63 M |
| 01/09/2026 | $9.19 | $9.19 (0%) | $9.34 | $9.11 | 401.92 K | $494.70 M |
| 01/08/2026 | $9.03 | $9.05 (0.22%) | $9.16 | $8.95 | 376.00 K | $487.16 M |
| 01/07/2026 | $9.00 | $9.13 (1.44%) | $9.47 | $8.96 | 468.70 K | $491.47 M |
| 01/06/2026 | $9.01 | $8.97 (-0.44%) | $9.14 | $8.89 | 636.41 K | $482.86 M |
| 01/05/2026 | $9.24 | $9.10 (-1.52%) | $9.24 | $8.92 | 539.12 K | $489.85 M |
| 01/02/2026 | $9.56 | $9.20 (-3.77%) | $9.69 | $9.07 | 526.92 K | $495.24 M |
| 12/31/2025 | $9.30 | $9.55 (2.69%) | $9.56 | $9.24 | 475.14 K | $514.08 M |
| 12/30/2025 | $9.45 | $9.31 (-1.48%) | $9.52 | $9.29 | 363.50 K | $501.16 M |
| 12/29/2025 | $9.49 | $9.48 (-0.11%) | $9.55 | $9.34 | 495.90 K | $510.31 M |
| 12/26/2025 | $9.67 | $9.54 (-1.34%) | $9.67 | $9.43 | 424.65 K | $513.54 M |
| 12/24/2025 | $9.46 | $9.69 (2.43%) | $9.74 | $9.23 | 237.40 K | $521.61 M |
| 12/23/2025 | $9.53 | $9.49 (-0.42%) | $9.59 | $9.29 | 703.40 K | $510.85 M |
| 12/22/2025 | $9.16 | $9.68 (5.68%) | $9.78 | $9.07 | 688.02 K | $521.07 M |
| 12/19/2025 | $9.38 | $9.21 (-1.81%) | $9.56 | $9.11 | 4.13 M | $495.77 M |
| 12/18/2025 | $9.46 | $9.38 (-0.85%) | $9.67 | $9.32 | 547.63 K | $504.93 M |
| 12/17/2025 | $9.78 | $9.43 (-3.58%) | $9.91 | $9.39 | 508.03 K | $507.62 M |
| 12/16/2025 | $9.95 | $9.75 (-2.01%) | $10.16 | $9.52 | 638.93 K | $524.84 M |
| 12/15/2025 | $10.37 | $9.97 (-3.86%) | $10.50 | $9.94 | 852.65 K | $536.69 M |
| 12/12/2025 | $10.40 | $10.36 (-0.38%) | $10.49 | $10.20 | 477.70 K | $557.68 M |
| 12/11/2025 | $9.93 | $10.33 (4.03%) | $10.50 | $9.81 | 693.40 K | $556.06 M |
| 12/10/2025 | $10.28 | $9.87 (-3.99%) | $10.32 | $9.69 | 961.40 K | $531.30 M |
| 12/09/2025 | $10.70 | $10.32 (-3.55%) | $10.80 | $10.23 | 532.20 K | $555.53 M |
| 12/08/2025 | $11.20 | $10.73 (-4.2%) | $11.30 | $10.71 | 561.90 K | $577.60 M |
| 12/05/2025 | $11.18 | $11.07 (-0.98%) | $11.48 | $10.98 | 434.70 K | $595.90 M |
| 12/04/2025 | $11.04 | $11.16 (1.09%) | $11.57 | $10.95 | 1.16 M | $600.74 M |
| 12/03/2025 | $10.40 | $11.17 (7.4%) | $11.48 | $10.31 | 777.50 K | $601.28 M |
| 12/02/2025 | $10.29 | $10.35 (0.58%) | $10.53 | $10.14 | 615.12 K | $557.14 M |
| 12/01/2025 | $10.98 | $10.27 (-6.47%) | $11.13 | $10.22 | 648.51 K | $552.83 M |
| 11/28/2025 | $10.52 | $10.75 (2.19%) | $10.83 | $10.46 | 288.73 K | $578.67 M |
| 11/26/2025 | $10.48 | $10.43 (-0.48%) | $10.59 | $10.37 | 451.42 K | $561.45 M |
| 11/25/2025 | $10.50 | $10.50 (0%) | $10.62 | $10.30 | 515.60 K | $565.22 M |
| 11/24/2025 | $10.55 | $10.40 (-1.42%) | $10.91 | $10.29 | 776.17 K | $559.83 M |
| 11/21/2025 | $10.02 | $10.48 (4.59%) | $10.69 | $9.90 | 461.20 K | $564.14 M |
| 11/20/2025 | $10.12 | $10.05 (-0.69%) | $10.51 | $9.99 | 460.50 K | $540.99 M |
| 11/19/2025 | $10.29 | $9.99 (-2.92%) | $10.49 | $9.97 | 479.70 K | $537.76 M |
| 11/18/2025 | $10.18 | $10.36 (1.77%) | $10.42 | $9.96 | 427.95 K | $557.68 M |
| 11/17/2025 | $9.94 | $10.25 (3.12%) | $10.32 | $9.75 | 827.25 K | $551.76 M |
| 11/14/2025 | $10.04 | $9.93 (-1.1%) | $10.33 | $9.93 | 504.50 K | $534.53 M |
| 11/13/2025 | $10.83 | $10.18 (-6%) | $10.83 | $10.12 | 679.64 K | $547.99 M |
| 11/12/2025 | $10.36 | $10.85 (4.73%) | $10.90 | $10.22 | 686.42 K | $584.06 M |
| 11/11/2025 | $10.39 | $10.48 (0.87%) | $10.75 | $10.14 | 603.64 K | $564.14 M |
| 11/10/2025 | $10.90 | $10.53 (-3.39%) | $11.09 | $10.47 | 694.73 K | $566.83 M |
| 11/07/2025 | $10.49 | $10.56 (0.67%) | $10.96 | $9.72 | 928.40 K | $568.44 M |
| 11/06/2025 | $10.30 | $10.08 (-2.14%) | $10.50 | $10.02 | 557.22 K | $542.61 M |
| 11/05/2025 | $10.17 | $10.27 (0.98%) | $10.45 | $10.00 | 535.31 K | $552.83 M |
| 11/04/2025 | $10.40 | $10.26 (-1.35%) | $10.56 | $10.16 | 600.35 K | $552.30 M |
| 11/03/2025 | $10.76 | $10.54 (-2.04%) | $11.17 | $10.41 | 612.50 K | $567.37 M |
| 10/31/2025 | $10.54 | $10.75 (1.99%) | $10.79 | $10.40 | 479.95 K | $578.64 M |
| 10/30/2025 | $10.63 | $10.48 (-1.41%) | $10.82 | $10.35 | 381.50 K | $564.11 M |