Recent 13F filings as of September 2025 show that 185 institutional investors hold a position in Prothena Corp Public Ltd Co (NASDAQ:PRTA).
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| FMR LLC | 30 Sep, 2025 | 7,901,218 | 0 | 0.00% | $77,115,888.00 |
| BlackRock, Inc. | 30 Sep, 2025 | 3,598,417 | -340,981 | -8.66% | $35,120,550.00 |
| VANGUARD GROUP INC | 30 Sep, 2025 | 2,049,849 | -126,378 | -5.81% | $20,006,526.00 |
| ARMISTICE CAPITAL, LLC | 30 Sep, 2025 | 1,824,000 | -412,000 | -18.43% | $17,802,240.00 |
| Rubric Capital Management LP | 30 Sep, 2025 | 1,540,373 | 1,540,373 | 0.00% | $15,034,040.00 |
| ADAR1 Capital Management, LLC | 30 Sep, 2025 | 1,469,098 | -1,905,911 | -56.47% | $14,338,396.00 |
| Palo Alto Investors LP | 30 Sep, 2025 | 1,324,028 | 49,275 | 3.87% | $12,922,513.00 |
| D. E. Shaw & Co., Inc. | 30 Sep, 2025 | 1,315,418 | 923,923 | 236.00% | $12,838,480.00 |
| ACADIAN ASSET MANAGEMENT LLC | 30 Sep, 2025 | 1,239,242 | 221,065 | 21.71% | $12,090.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 30 Sep, 2025 | 1,019,483 | 86,037 | 9.22% | $9,952,225.00 |
| STATE STREET CORP | 30 Sep, 2025 | 901,038 | -103,964 | -10.34% | $8,794,131.00 |
| JANE STREET GROUP, LLC | 30 Sep, 2025 | 879,192 | 562,539 | 177.65% | $8,580,914.00 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 30 Sep, 2025 | 876,528 | 183,374 | 26.46% | $8,554,913.00 |
| DIMENSIONAL FUND ADVISORS LP | 30 Sep, 2025 | 806,988 | -155,351 | -16.14% | $7,876,161.00 |
| MORGAN STANLEY | 30 Sep, 2025 | 799,674 | -153,582 | -16.11% | $7,804,823.00 |
| CITADEL ADVISORS LLC | 30 Sep, 2025 | 767,105 | 677,706 | 758.07% | $7,486,945.00 |
| JPMORGAN CHASE & CO | 30 Sep, 2025 | 735,765 | 608,814 | 479.57% | $7,181,066.00 |
| FEDERATED HERMES, INC. | 30 Sep, 2025 | 692,818 | -488,269 | -41.34% | $6,761,904.00 |
| Nuveen, LLC | 30 Sep, 2025 | 668,290 | 546,135 | 447.08% | $6,522,511.00 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 30 Sep, 2025 | 654,294 | 612,039 | 1,448.44% | $6,385,909.00 |