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Prothena Corporation plc (PRTA)
NasdaqGS - NasdaqGS Real-time price. Currency in USD
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As of 01:20PM EST. Market open.
Major holders
Currency in USDBreakdown
| 0.05% | % of shares held by all insiders |
| 89.58% | % of shares held by institutions |
| 89.62% | % of float held by institutions |
| 271 | Number of institutions holding shares |
Top institutional holders
| Holder | Shares | Date reported | % out | Value |
|---|---|---|---|---|
| EcoR1 Capital, LLC | 11,284,280 | 29 Sep 2021 | 24.22% | 803,779,264 |
| Price (T.Rowe) Associates Inc | 6,062,629 | 29 Sep 2021 | 13.01% | 431,841,063 |
| Blackrock Inc. | 3,769,704 | 29 Sep 2021 | 8.09% | 268,516,015 |
| FMR, LLC | 2,649,431 | 29 Sep 2021 | 5.69% | 188,718,970 |
| Palo Alto Investors Lp | 1,685,282 | 29 Sep 2021 | 3.62% | 120,042,636 |
| Dimensional Fund Advisors LP | 1,579,648 | 29 Sep 2021 | 3.39% | 112,518,327 |
| First Light Asset Management, LLC | 1,449,494 | 29 Sep 2021 | 3.11% | 103,247,457 |
| State Street Corporation | 1,405,244 | 29 Sep 2021 | 3.02% | 100,095,530 |
| Redmile Group, LLC | 901,491 | 29 Sep 2021 | 1.93% | 64,213,203 |
| Vanguard Group, Inc. (The) | 868,478 | 29 Sep 2021 | 1.86% | 61,861,687 |
Top mutual fund holders
| Holder | Shares | Date reported | % out | Value |
|---|---|---|---|---|
| Price (T.Rowe) New Horizons Fund | 1,483,220 | 29 Jun 2021 | 3.18% | 76,252,340 |
| Price (T.Rowe) Health Sciences Fund | 1,011,372 | 29 Jun 2021 | 2.17% | 51,994,634 |
| Price (T.Rowe) Small Cap Stock Fund | 909,553 | 29 Jun 2021 | 1.95% | 46,760,119 |
| Fidelity Select Portfolios - Biotechnology | 868,489 | 29 Sep 2021 | 1.86% | 61,862,471 |
| iShares Russell 2000 ETF | 799,529 | 29 Sep 2021 | 1.72% | 56,950,450 |
| SPDR (R) Ser Tr-SPDR (R) S&P (R) Biotech ETF | 714,946 | 29 Sep 2021 | 1.53% | 50,925,603 |
| Fidelity Growth Company Fund | 687,110 | 29 Sep 2021 | 1.47% | 48,942,845 |
| Price (T.Rowe) Institutional Small-Cap Stock Fund | 540,040 | 29 Jun 2021 | 1.16% | 27,763,456 |
| Vanguard Extended Market Index Fund | 398,825 | 29 Jun 2021 | 0.86% | 20,503,593 |
| DFA U.S. Small Cap Series | 393,536 | 30 Jul 2021 | 0.84% | 19,716,153 |
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