Prothena Corp Public Ltd Co (NASDAQ:PRTA) has 182 institutional investors that have filed 13F reports for the period ending March 2026.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| FMR LLC | 31 Mar, 2026 | 7,551,218 | 0 | 0.00% | $73,397,839.00 |
| Rubric Capital Management LP | 31 Mar, 2026 | 5,000,000 | 1,322,669 | 35.97% | $48,600,000.00 |
| BlackRock, Inc. | 31 Mar, 2026 | 4,644,160 | 536,701 | 13.07% | $45,141,233.00 |
| State Street Corp | 31 Mar, 2026 | 1,938,498 | -329,304 | -14.52% | $18,842,201.00 |
| D. E. Shaw & Co., Inc. | 31 Mar, 2026 | 1,763,347 | 81,978 | 4.88% | $17,139,733.00 |
| ADAR1 Capital Management, LLC | 31 Mar, 2026 | 1,581,443 | -1,334,085 | -45.76% | $15,371,626.00 |
| ACADIAN ASSET MANAGEMENT LLC | 31 Mar, 2026 | 1,547,593 | 110,235 | 7.67% | $15,037.00 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31 Mar, 2026 | 1,445,979 | 1,445,979 | 0.00% | $14,054,916.00 |
| Morgan Stanley | 31 Mar, 2026 | 1,230,448 | -16,327 | -1.31% | $11,959,961.00 |
| Palo Alto Investors LP | 31 Mar, 2026 | 1,208,568 | -111,942 | -8.48% | $11,747,281.00 |
| TWO SIGMA INVESTMENTS, LP | 31 Mar, 2026 | 1,205,978 | 535,840 | 79.96% | $11,722,106.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Mar, 2026 | 1,098,166 | 35,097 | 3.30% | $10,676,629.00 |
| Federated Hermes, Inc. | 31 Mar, 2026 | 1,059,849 | 85,482 | 8.77% | $10,301,732.00 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 31 Mar, 2026 | 972,017 | -5,994 | -0.61% | $9,448,005.00 |
| Goldman Sachs Group Inc | 31 Mar, 2026 | 818,885 | -1,051,781 | -56.22% | $7,959,563.00 |
| DIMENSIONAL FUND ADVISORS LP | 31 Mar, 2026 | 782,603 | 7,396 | 0.95% | $7,606,336.00 |
| Nuveen, LLC | 31 Mar, 2026 | 759,368 | 261 | 0.03% | $7,381,057.00 |
| Qube Research & Technologies Ltd | 31 Mar, 2026 | 614,603 | 206,914 | 50.75% | $5,973,941.00 |
| RENAISSANCE TECHNOLOGIES LLC | 31 Mar, 2026 | 607,515 | 172,000 | 39.49% | $5,905,046.00 |
| Mariner, LLC | 31 Mar, 2026 | 563,082 | -14,856 | -2.57% | $5,473,134.00 |