Prothena Corporation plc (PRTA) NASDAQ
Currency In USD
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Currency In USD
If you invested $1000 in Prothena Corporation plc (PRTA) 10 years ago, it would be worth $143.17 as of November 10, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $152.61, while $1000 invested 1 year ago would be worth $812.92. This corresponds to total returns of -85.68%, -84.74%, -18.71%, respectively, with annualized returns of -17.66%, -31.32%, -18.71%.
Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.
Date Range:
| Date | Open | Close | Adj Close | High | Low | Volume |
|---|---|---|---|---|---|---|
| November 10, 2026 | 8.63 | 8.56 | 8.56 | 8.76 | 8.32 | 394,124 |
| November 09, 2026 | 8.21 | 8.78 | 8.78 | 8.84 | 7.79 | 741,117 |
| November 06, 2026 | 7.9 | 7.97 | 7.97 | 8.17 | 7.87 | 421,781 |
| November 05, 2026 | 8.27 | 7.89 | 7.89 | 8.38 | 7.87 | 518,497 |
| November 04, 2026 | 8.48 | 8.39 | 8.39 | 8.56 | 8.28 | 289,190 |
| November 03, 2026 | 8.35 | 8.21 | 8.21 | 8.47 | 8.15 | 288,586 |
| November 02, 2026 | 8.45 | 8.29 | 8.29 | 8.49 | 8.11 | 462,460 |
| October 30, 2026 | 8.79 | 8.47 | 8.47 | 8.9 | 8.35 | 452,298 |
| October 29, 2026 | 9.1 | 8.88 | 8.88 | 9.26 | 8.75 | 370,067 |
| October 28, 2026 | 8.64 | 9.1 | 9.1 | 9.22 | 8.61 | 751,944 |
| October 27, 2026 | 8.4 | 8.81 | 8.81 | 8.85 | 8.35 | 654,349 |
| October 26, 2026 | 8.34 | 8.4 | 8.4 | 8.49 | 8.21 | 594,543 |
| October 23, 2026 | 8.18 | 8.2 | 8.2 | 8.27 | 7.93 | 385,915 |
| October 22, 2026 | 8.01 | 8.25 | 8.25 | 8.29 | 7.96 | 381,828 |
| October 21, 2026 | 8.47 | 8.03 | 8.03 | 8.54 | 8.01 | 461,392 |
| October 20, 2026 | 8.55 | 8.5 | 8.5 | 8.65 | 8.45 | 529,032 |
| October 19, 2026 | 8.39 | 8.48 | 8.48 | 8.57 | 8.31 | 361,120 |
| October 16, 2026 | 8.58 | 8.35 | 8.35 | 8.62 | 8.24 | 670,256 |
| October 15, 2026 | 8.54 | 8.5 | 8.5 | 8.65 | 8.44 | 358,336 |
| October 14, 2026 | 8.28 | 8.37 | 8.37 | 8.56 | 8.19 | 618,715 |
| October 13, 2026 | 8.45 | 8.36 | 8.36 | 8.55 | 8.2 | 573,303 |
| October 12, 2026 | 8.81 | 8.43 | 8.43 | 8.81 | 8.4 | 489,758 |
| October 09, 2026 | 8.57 | 8.84 | 8.84 | 9.31 | 8.5 | 931,619 |
| October 08, 2026 | 8.43 | 8.61 | 8.61 | 8.81 | 8.36 | 642,380 |
| October 07, 2026 | 7.93 | 8.48 | 8.48 | 8.63 | 7.88 | 690,408 |
| October 06, 2026 | 8.28 | 8.02 | 8.02 | 8.28 | 7.8 | 508,306 |
| October 05, 2026 | 8.34 | 8.27 | 8.27 | 8.37 | 7.91 | 714,460 |
| October 02, 2026 | 8.62 | 8.36 | 8.36 | 8.62 | 8.35 | 675,837 |
| October 01, 2026 | 8.54 | 8.54 | 8.54 | 8.58 | 8.35 | 457,083 |
| September 30, 2026 | 8.98 | 8.38 | 8.38 | 8.99 | 8.37 | 634,322 |
| September 29, 2026 | 8.66 | 8.78 | 8.78 | 8.8 | 8.59 | 543,121 |
| September 28, 2026 | 8.25 | 8.72 | 8.72 | 8.86 | 8.07 | 488,857 |
| September 25, 2026 | 8.38 | 8.29 | 8.29 | 8.52 | 8.19 | 481,047 |
| September 24, 2026 | 8.63 | 8.32 | 8.32 | 8.73 | 8.28 | 426,061 |
| September 23, 2026 | 8.94 | 8.68 | 8.68 | 8.97 | 8.66 | 357,806 |
| September 22, 2026 | 8.72 | 8.99 | 8.99 | 9.09 | 8.7 | 388,487 |
| September 21, 2026 | 8.59 | 8.51 | 8.51 | 8.8 | 8.48 | 360,687 |
| September 18, 2026 | 8.41 | 8.58 | 8.58 | 8.6 | 8.25 | 1.83M |
| September 17, 2026 | 8.39 | 8.46 | 8.46 | 8.56 | 8.23 | 404,757 |
| September 16, 2026 | 8.35 | 8.24 | 8.24 | 8.5 | 8.2 | 398,335 |
| September 15, 2026 | 8.86 | 8.33 | 8.33 | 8.86 | 8.3 | 323,436 |
| September 11, 2026 | 9.06 | 8.93 | 8.93 | 9.11 | 8.77 | 376,273 |
| September 10, 2026 | 9.25 | 9.02 | 9.02 | 9.26 | 8.97 | 310,810 |
| September 09, 2026 | 9.4 | 9.3 | 9.3 | 9.5 | 9.22 | 294,557 |
| September 08, 2026 | 9.6 | 9.54 | 9.54 | 9.67 | 9.35 | 305,062 |
| September 04, 2026 | 9.5 | 9.82 | 9.82 | 9.87 | 9.48 | 383,926 |
| September 03, 2026 | 9.77 | 9.6 | 9.6 | 9.78 | 9.51 | 275,198 |
| September 02, 2026 | 9.64 | 9.69 | 9.69 | 9.75 | 9.37 | 341,054 |
| September 01, 2026 | 9.28 | 9.61 | 9.61 | 9.63 | 9.26 | 267,669 |
| August 31, 2026 | 9.26 | 9.35 | 9.35 | 9.4 | 9.1 | 335,149 |
| August 28, 2026 | 9.02 | 9.33 | 9.33 | 9.48 | 8.95 | 498,115 |
| August 27, 2026 | 9.16 | 9.09 | 9.09 | 9.24 | 8.95 | 338,896 |
| August 26, 2026 | 9.4 | 9.25 | 9.25 | 9.4 | 9.15 | 289,037 |
| August 25, 2026 | 9.51 | 9.42 | 9.42 | 9.82 | 9.42 | 363,694 |
| August 24, 2026 | 9.46 | 9.39 | 9.39 | 9.49 | 9.19 | 248,123 |
| August 21, 2026 | 9.11 | 9.45 | 9.45 | 9.52 | 9.09 | 376,043 |
| August 20, 2026 | 9.13 | 9.03 | 9.03 | 9.15 | 8.71 | 345,467 |
| August 19, 2026 | 8.91 | 9.29 | 9.29 | 9.33 | 8.91 | 0 |
| August 18, 2026 | 8.88 | 8.71 | 8.71 | 9 | 8.58 | 248,559 |
| August 17, 2026 | 8.84 | 8.88 | 8.88 | 9.07 | 8.73 | 365,916 |