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Prothena Corp Stock Short Interest Report | NASDAQ:PRTA | Benzinga
Short interest in Prothena Corp PLC (NASDAQ:PRTA) increased during the last reporting period, rising from 4.41M to 4.66M. This put 16.27% of the company's publicly available shares short.
Short interest in Prothena Corp Corp (XNAS:PRTA) decreased during the last reporting period, falling from 280.30M to 275.20M. This put 1.17% of the company's publicly available shares short.
Based on the recent average volume of 1.21M shares traded per day, it would take 3.84 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.
Short Interest
4.66M
Short Interest %
16.3%
Days to Cover
3.84
| Get Alert | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| PRTA | Prothena Corporation plc Ordin | 06/13/2025 | 06/25/2025 | 16.27% | 28,613,948 | 4,655,763 | 1,213,691 | 3.84 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 05/30/2025 | 06/10/2025 | 15.43% | 28,613,948 | 4,414,727 | 3,006,617 | 1.47 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 05/15/2025 | 05/27/2025 | 31.29% | 28,613,948 | 8,952,748 | 2,403,915 | 3.72 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 04/30/2025 | 05/09/2025 | 26.05% | 28,613,948 | 7,453,961 | 624,288 | 11.94 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 04/15/2025 | 04/25/2025 | 27.69% | 28,613,948 | 7,922,712 | 663,666 | 11.94 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 03/31/2025 | 04/09/2025 | 29.30% | 28,613,948 | 8,384,570 | 456,509 | 18.37 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 03/14/2025 | 03/25/2025 | 25.69% | 34,171,243 | 8,779,086 | 446,550 | 19.66 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 02/28/2025 | 03/11/2025 | 26.72% | 34,171,243 | 9,129,265 | 428,701 | 21.3 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 02/14/2025 | 02/26/2025 | 26.45% | 34,152,993 | 9,034,843 | 291,628 | 30.98 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 01/31/2025 | 02/11/2025 | 26.06% | 34,152,993 | 8,900,074 | 336,501 | 26.45 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 01/15/2025 | 01/27/2025 | 27.38% | 34,152,993 | 9,349,701 | 462,780 | 20.2 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 12/31/2024 | 01/10/2025 | 25.68% | 34,152,993 | 8,770,252 | 968,036 | 9.06 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 12/13/2024 | 12/24/2024 | 25.76% | 34,152,993 | 8,797,843 | 485,033 | 18.14 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 11/29/2024 | 12/10/2024 | 23.59% | 34,152,993 | 8,057,302 | 452,032 | 17.82 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 11/15/2024 | 11/26/2024 | 23.06% | 34,152,993 | 7,877,213 | 440,920 | 17.87 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 10/31/2024 | 11/11/2024 | 22.07% | 34,124,606 | 7,531,620 | 472,306 | 15.95 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 10/15/2024 | 10/24/2024 | 19.88% | 34,124,606 | 6,785,191 | 658,278 | 10.31 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 09/30/2024 | 10/09/2024 | 15.53% | 34,124,606 | 5,300,187 | 684,847 | 7.74 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 09/13/2024 | 09/24/2024 | 16.77% | 34,124,606 | 5,722,694 | 229,807 | 24.9 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 08/30/2024 | 09/11/2024 | 16.40% | 34,124,606 | 5,594,870 | 270,203 | 20.71 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 07/31/2024 | 08/09/2024 | 15.75% | 34,124,606 | 5,376,254 | 395,161 | 13.61 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 07/15/2024 | 07/24/2024 | 13.98% | 34,116,106 | 4,769,408 | 451,493 | 10.56 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 06/28/2024 | 07/10/2024 | 14.95% | 34,116,106 | 5,100,793 | 865,304 | 5.89 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 06/14/2024 | 06/26/2024 | 19.51% | 34,116,106 | 6,656,447 | 399,955 | 16.64 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 05/31/2024 | 06/11/2024 | 19.67% | 34,116,106 | 6,711,658 | 446,541 | 15.03 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 05/15/2024 | 05/24/2024 | 19.10% | 34,116,106 | 6,514,844 | 576,073 | 11.31 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 04/30/2024 | 05/09/2024 | 19.78% | 34,116,106 | 6,749,592 | 467,001 | 14.45 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 04/15/2024 | 04/24/2024 | 19.46% | 34,064,716 | 6,627,798 | 555,973 | 11.92 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 03/28/2024 | 04/09/2024 | 18.98% | 34,064,716 | 6,465,538 | 588,398 | 10.99 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 03/15/2024 | 03/26/2024 | 16.96% | 36,849,665 | 6,249,415 | 564,129 | 11.08 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 02/29/2024 | 03/11/2024 | 16.46% | 36,849,665 | 6,065,555 | 702,828 | 8.63 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 02/15/2024 | 02/27/2024 | 15.77% | 36,849,665 | 5,811,291 | 878,559 | 6.61 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 01/31/2024 | 02/09/2024 | 15.62% | 36,794,559 | 5,747,464 | 708,204 | 8.12 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 01/12/2024 | 01/24/2024 | 17.02% | 36,794,559 | 6,261,842 | 1,509,100 | 4.15 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 12/29/2023 | 01/10/2024 | 16.52% | 36,794,559 | 6,078,890 | 722,250 | 8.42 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 12/15/2023 | 12/27/2023 | 15.80% | 36,794,559 | 5,815,280 | 897,000 | 6.48 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 11/30/2023 | 12/11/2023 | 18.61% | 36,794,559 | 6,848,870 | 517,215 | 13.24 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 11/15/2023 | 11/27/2023 | 16.83% | 36,794,559 | 6,193,632 | 688,613 | 8.99 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 10/31/2023 | 11/09/2023 | 17.67% | 36,794,559 | 6,502,502 | 1,249,504 | 5.2 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 10/13/2023 | 10/24/2023 | 13.86% | 36,664,510 | 5,081,813 | 540,087 | 9.41 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 09/29/2023 | 10/10/2023 | 11.98% | 36,664,510 | 4,392,565 | 408,526 | 10.75 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 09/15/2023 | 09/26/2023 | 11.66% | 36,664,510 | 4,275,806 | 387,122 | 11.05 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 08/31/2023 | 09/12/2023 | 11.23% | 36,664,510 | 4,116,615 | 425,308 | 9.68 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 08/15/2023 | 08/24/2023 | 10.10% | 36,664,510 | 3,702,014 | 400,435 | 9.24 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 07/31/2023 | 08/09/2023 | 10.01% | 36,664,510 | 3,670,609 | 356,594 | 10.29 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 07/14/2023 | 07/25/2023 | 10.16% | 35,880,985 | 3,644,221 | 267,941 | 13.6 | Get Alert |
| PRTA | Prothena Corporation plc Ordin | 06/30/2023 | 07/12/2023 | 9.81% | 35,880,985 | 3,519,306 | 471,028 | 7.47 | Get Alert |
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