Prothena Corporation plc Ordinary Shares (PRTA) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for PRTA. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 183 institutions reported holding PRTA, with 47.2 million shares worth $464.1 million in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| FMR | 7,199,218 | $70M | DECREASED |
| Rubric Capital Management | 5,000,000 | $49M | UNCHANGED |
| BlackRock | 4,867,955 | $48M | INCREASED |
| Vanguard | 2,408,551 | $24M | INCREASED |
| State Street | 2,393,424 | $23M | INCREASED |
Full institutional holdings, insider history, and congressional trades for Prothena Corporation plc Ordinary Shares on SentiSense.