P
Prothena Corporation plc (PRTA)
NMS – Real Time Price. Currency in USD
9.43
-0.24 (-2.48%)
At close: May 12, 2026, 4:00 PM EDT
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NMS – Real Time Price. Currency in USD
9.43
-0.24 (-2.48%)
At close: May 12, 2026, 4:00 PM EDT
| Breakdown | |
|---|---|
| 19.32% | % of Shares Held by All Insider |
| 89.25% | % of Shares Held by Institutions |
| 110.63% | % of Float Held by Institutions |
| 256 | Number of Institutions Holding Shares |
| Holder | Shares | Date Reported | % Out | Value |
|---|---|---|---|---|
| FMR, LLC | 7.55M | 2025-12-31 | 14.03% | $81.02M |
| Blackrock Inc. | 4.11M | 2025-12-31 | 7.63% | $44.07M |
| Rubric Capital Management LP | 3.68M | 2025-12-31 | 6.83% | $39.46M |
| State Street Corporation | 2.27M | 2025-12-31 | 4.21% | $24.33M |
| Vanguard Group Inc | 2.14M | 2025-12-31 | 3.98% | $22.97M |
| Shaw D.E. & Co., Inc. | 1.68M | 2025-12-31 | 3.12% | $18.04M |
| Armistice Capital, LLC | 1.50M | 2025-12-31 | 2.79% | $16.09M |
| Adar1 Capital Management, LLC | 1.46M | 2025-12-31 | 2.71% | $15.64M |
| Acadian Asset Management. LLC | 1.44M | 2025-12-31 | 2.67% | $15.42M |
| Palo Alto Investors Lp | 1.32M | 2025-12-31 | 2.45% | $14.17M |
| Holder | Shares | Date Reported | % Out | Value |
|---|---|---|---|---|
| Fidelity Mt. Vernon Street Trust-Fidelity Growth Company Fund | 2.29M | 2026-03-31 | 4.26% | $24.62M |
| iShares Trust-iShares Russell 2000 ETF | 1.08M | 2026-03-31 | 2.01% | $11.64M |
| SPDR SERIES TRUST-State Street SPDR S&P Biotech ETF | 1.03M | 2026-03-31 | 1.91% | $11.05M |
| Fidelity Mt. Vernon Street Trust-Fidelity Series Growth Company Fund | 758,905 | 2026-03-31 | 1.41% | $8.14M |
| TIAA-CREF Funds-Nuveen Quant Small Cap Equity Fund | 652,130 | 2026-01-31 | 1.21% | $7.00M |
| Fidelity Select Portfolios-Select Biotechnology Portfolio | 643,917 | 2026-03-31 | 1.20% | $6.91M |
| Vanguard Explorer Fund | 617,222 | 2026-01-31 | 1.15% | $6.62M |
| VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund | 482,716 | 2025-12-31 | 0.90% | $5.18M |
| Fidelity Salem Street Trust-Fidelity Small Cap Index Fund | 430,950 | 2026-02-28 | 0.80% | $4.62M |
| Fidelity Mt. Vernon Street Trust-Fidelity Growth Company K6 Fund | 426,743 | 2026-03-31 | 0.79% | $4.58M |