P
Prothena Corporation plc (PRTA)
9.26
0.00 (0.00%)
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9.26
0.00 (0.00%)
| Breakdown | |
|---|---|
| 19.20% | % of Shares Held by All Insider |
| 88.63% | % of Shares Held by Institutions |
| 109.69% | % of Float Held by Institutions |
| 254 | Number of Institutions Holding Shares |
| Holder | Shares | Date Reported | % Out | Value |
|---|---|---|---|---|
| FMR, LLC | 7.55M | 2025-12-31 | 14.03% | $69.92M |
| Blackrock Inc. | 4.11M | 2025-12-31 | 7.63% | $38.04M |
| Rubric Capital Management LP | 3.68M | 2025-12-31 | 6.83% | $34.05M |
| State Street Corporation | 2.27M | 2025-12-31 | 4.21% | $21.00M |
| Vanguard Group Inc | 2.14M | 2025-12-31 | 3.98% | $19.82M |
| Shaw D.E. & Co., Inc. | 1.68M | 2025-12-31 | 3.12% | $15.57M |
| Armistice Capital, LLC | 1.50M | 2025-12-31 | 2.79% | $13.89M |
| Adar1 Capital Management, LLC | 1.46M | 2025-12-31 | 2.71% | $13.50M |
| Acadian Asset Management. LLC | 1.44M | 2025-12-31 | 2.67% | $13.31M |
| Palo Alto Investors Lp | 1.32M | 2025-12-31 | 2.45% | $12.23M |
| Holder | Shares | Date Reported | % Out | Value |
|---|---|---|---|---|
| Fidelity Mt. Vernon Street Trust-Fidelity Growth Company Fund | 2.29M | 2026-01-31 | 4.26% | $21.24M |
| SPDR SERIES TRUST-State Street SPDR S&P Biotech ETF | 1.43M | 2026-01-31 | 2.65% | $13.21M |
| iShares Trust-iShares Russell 2000 ETF | 1.06M | 2026-01-31 | 1.96% | $9.79M |
| Fidelity Mt. Vernon Street Trust-Fidelity Series Growth Company Fund | 758,905 | 2026-01-31 | 1.41% | $7.03M |
| TIAA-CREF Funds-Nuveen Quant Small Cap Equity Fund | 664,580 | 2025-10-31 | 1.23% | $6.15M |
| Fidelity Select Portfolios-Select Biotechnology Portfolio | 643,917 | 2026-01-31 | 1.20% | $5.96M |
| Vanguard Explorer Fund | 586,973 | 2025-10-31 | 1.09% | $5.44M |
| VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund | 482,716 | 2025-12-31 | 0.90% | $4.47M |
| Fidelity Salem Street Trust-Fidelity Small Cap Index Fund | 431,147 | 2025-12-31 | 0.80% | $3.99M |
| Fidelity Mt. Vernon Street Trust-Fidelity Growth Company K6 Fund | 429,522 | 2026-01-31 | 0.80% | $3.98M |