Who Owns PROTHENA CORP PLC SHS (PRTA)? -- Institutional Holders (2026-06-30)
209 institutions reported holding $482.5M of PROTHENA CORP PLC SHS (PRTA) in SEC 13F filings for 2026-06-30. Largest institutional holders: FMR LLC ($70.5M), Rubric Capital Management LP ($49.0M), BlackRock, Inc. ($47.7M), VANGUARD GROUP INC ($23.6M), STATE STREET CORP ($23.4M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | FMR LLC | $70.5M | 7.2M | Trimmed |
| 2 | Rubric Capital Management LP | $49.0M | 5.0M | Hold |
| 3 | BlackRock, Inc. | $47.7M | 4.9M | Added |
| 4 | VANGUARD GROUP INC | $23.6M | 2.4M | Added |
| 5 | STATE STREET CORP | $23.4M | 2.4M | Added |
| 6 | ACADIAN ASSET MANAGEMENT LLC | $19.7M | 2.0M | Added |
| 7 | D. E. Shaw & Co., Inc. | $15.8M | 1.6M | Trimmed |
| 8 | ADAR1 Capital Management, LLC | $15.2M | 1.6M | Trimmed |
| 9 | TWO SIGMA INVESTMENTS, LP | $12.4M | 1.3M | Added |
| 10 | Palo Alto Investors LP | $11.2M | 1.1M | Trimmed |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | $11.0M | 1.1M | Added |
| 12 | FEDERATED HERMES, INC. | $10.6M | 1.1M | Added |
| 13 | MORGAN STANLEY | $9.7M | 995,348 | Trimmed |
| 14 | GOLDMAN SACHS GROUP INC | $9.6M | 979,730 | Added |
| 15 | JACOBS LEVY EQUITY MANAGEMENT, INC | $9.5M | 965,988 | Trimmed |
| 16 | DIMENSIONAL FUND ADVISORS LP | $8.9M | 905,651 | Added |
| 17 | Qube Research & Technologies Ltd | $7.7M | 791,169 | Added |
| 18 | RENAISSANCE TECHNOLOGIES LLC | $6.8M | 697,615 | Added |
| 19 | Man Group plc | $6.6M | 678,116 | Added |
| 20 | Mariner, LLC | $6.1M | 625,095 | Added |
| 21 | CITADEL ADVISORS LLC | $5.9M | 598,010 | Added |
| 22 | Nuveen, LLC | $5.5M | 557,157 | Trimmed |
| 23 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $4.8M | 486,900 | Added |
| 24 | NORTHERN TRUST CORP | $4.5M | 457,124 | Added |
| 25 | Birchview Capital, LP | $4.4M | 449,019 | Hold |
Source: SEC Form 13F filings · as of 2026-06-30