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Prothena Corporation plc (PRTA)
NasdaqGS - NasdaqGS Real-time price. Currency in USD
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Major holders
Currency in USDBreakdown
| 0.08% | % of shares held by all insiders |
| 95.51% | % of shares held by institutions |
| 95.59% | % of float held by institutions |
| 253 | Number of institutions holding shares |
Top institutional holders
| Holder | Shares | Date reported | % out | Value |
|---|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | 30 Mar 2022 | 24.75% | 423,637,119 |
| Price (T.Rowe) Associates Inc | 6,113,742 | 30 Mar 2022 | 13.06% | 223,579,544 |
| Blackrock Inc. | 3,861,586 | 30 Mar 2022 | 8.25% | 141,218,200 |
| FMR, LLC | 2,675,614 | 30 Mar 2022 | 5.72% | 97,847,203 |
| State Street Corporation | 2,367,583 | 30 Mar 2022 | 5.06% | 86,582,510 |
| First Light Asset Management, LLC | 1,838,548 | 30 Mar 2022 | 3.93% | 67,235,700 |
| Palo Alto Investors Lp | 1,681,477 | 30 Mar 2022 | 3.59% | 61,491,613 |
| Dimensional Fund Advisors LP | 1,505,156 | 30 Mar 2022 | 3.22% | 55,043,554 |
| Vanguard Group, Inc. (The) | 875,300 | 30 Mar 2022 | 1.87% | 32,009,721 |
| Redmile Group, LLC | 736,175 | 30 Mar 2022 | 1.57% | 26,921,919 |
Top mutual fund holders
| Holder | Shares | Date reported | % out | Value |
|---|---|---|---|---|
| SPDR (R) Ser Tr-SPDR (R) S&P (R) Biotech ETF | 1,511,846 | 27 Feb 2022 | 3.23% | 52,309,871 |
| Price (T.Rowe) New Horizons Fund | 1,454,626 | 30 Dec 2021 | 3.11% | 71,858,524 |
| Price (T.Rowe) Small Cap Stock Fund | 904,353 | 30 Dec 2021 | 1.93% | 44,675,038 |
| Price (T.Rowe) Health Sciences Fund | 887,119 | 30 Dec 2021 | 1.90% | 43,823,678 |
| Fidelity Select Portfolios - Biotechnology | 852,589 | 27 Feb 2022 | 1.82% | 29,499,579 |
| iShares Russell 2000 ETF | 814,706 | 27 Feb 2022 | 1.74% | 28,188,827 |
| Fidelity Growth Company Fund | 663,679 | 27 Feb 2022 | 1.42% | 22,963,293 |
| Vanguard Extended Market Index Fund | 473,822 | 30 Dec 2021 | 1.01% | 23,406,806 |
| Price (T.Rowe) Institutional Small-Cap Stock Fund | 466,540 | 30 Dec 2021 | 1.00% | 23,047,076 |
| Price (T.Rowe) Small-Cap Value Fund | 456,613 | 30 Dec 2021 | 0.98% | 22,556,682 |
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