CUSIP G72800108SHSQ4 2025
53 filings · latest Feb 13, 2026
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Fmr LLC | 7.55M | $72.11M |
| 2 | Blackrock, Inc. | 4.11M | $39.23M |
| 3 | Rubric Capital Management LP | 3.68M | $35.12M |
| 4 | State Street Corp | 2.27M | $21.66M |
| 5 | Vanguard Group Inc | 2.14M | $20.45M |
| 6 | D. E. Shaw & Co., Inc. | 1.68M | $16.06M |
| 7 | Armistice Capital, LLC | 1.50M | $14.32M |
| 8 | Adar1 Capital Management, LLC | 1.46M | $13.92M |
| 9 | Palo Alto Investors LP |
| 4 | Nov 12, 2025 | Scully William P | 13G/A | 9.8% | 5.28M | SEC |
| 5 | Oct 17, 2025 | Blackrock, Inc. | 13G/A | 5.7% | 3.09M | SEC |
| 6 | Aug 14, 2025 | Adar1 Capital Management, LLC | 13G | 13.0% | 3.38M | SEC |
| 7 | Aug 14, 2025 | Logos Global Management LP | 13G/A | — | — | SEC |
| 8 | Aug 14, 2025 | T. Rowe Price Associates, Inc. | 13G/A | 0.1% | 71.0K | SEC |
| 9 | Aug 13, 2025 | Fennell Todd W. | 13G/A | 8.1% | 4.35M | SEC |
| 10 | Aug 13, 2025 | Scully William P | 13G/A | 9.9% | 5.35M | SEC |
See the full Schedule 13D/13G history for Prothena Corp PLC.
Unlock full history| 1.32M |
| $12.61M |
| 10 | Morgan Stanley | 1.25M | $11.91M |