PRTA · Company research
Prothena Corporation plc (PRTA): Ownership & Institutional Holders
Reported institutional positions. Filing dates and sources matter.
RESEARCH CONTEXT
Understand the numbers
Reported institutional positions. Filing dates and sources matter. Use period, currency, units and source fields when interpreting values.
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Ownership & Institutional Holders data
Database-backed records only
| holder name | cik | period end | shares held | market value | ownership percent | shares change | shares change percent | filing date | data source |
|---|---|---|---|---|---|---|---|---|---|
| Rangeley Capital, LLC | 1517796 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 417270 | 4085073 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| US BANCORP \DE\ | 36104 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 393 | 3848 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| DIADEMA PARTNERS LP | 2026172 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 149482 | 1463429 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Trexquant Investment LP | 1633445 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 76731 | 751196 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MOGY JOEL R INVESTMENT COUNSEL INC | 1126735 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 20750 | 203142 | — | — | — | Jul 14, 2026 | SEC_13F_DATASET |
| BROWN BROTHERS HARRIMAN & CO | 14661 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5000 | 48950 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| BlackRock, Inc. | 2012383 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2002911 | 19608499 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| nVerses Capital, LLC | 2011399 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 13246 | 129678 | — | — | — | Aug 4, 2026 | SEC_13F_DATASET |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1651293 | 16166158 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Pacer Advisors, Inc. | 1616667 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 675 | 7 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Leo H. Evart, Inc. | 1920405 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 22 | 215 | — | — | — | Aug 18, 2026 | SEC_13F_DATASET |
| CITIGROUP INC | 831001 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 54779 | 536286 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 1007280 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 42158 | 412727 | — | — | — | Aug 17, 2026 | SEC_13F_DATASET |
| ENVESTNET ASSET MANAGEMENT INC | 1407543 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 22908 | 224269 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| Seven Fleet Capital Management LP | 2092021 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 43300 | 423907 | — | — | — | Aug 17, 2026 | SEC_13F_DATASET |
| Graham Capital Management, L.P. | 1315421 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 18496 | 181076 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| JBF Capital, Inc. | 1483864 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10285 | 100690 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 479945 | 4698662 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| BNP PARIBAS FINANCIAL MARKETS | 1166588 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 315803 | 3091711 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| MARTINGALE ASSET MANAGEMENT L P | 936944 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 78800 | 771452 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| SEI INVESTMENTS CO | 350894 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 30773 | 301268 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| UBS Group AG | 1610520 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 241098 | 2360349 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Mirae Asset Global Investments Co., Ltd. | 1569395 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2341 | 22918 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| ALLIANCEBERNSTEIN L.P. | 1109448 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 69217 | 672789 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| FEDERATED HERMES, INC. | 1056288 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 942954 | 9231520 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Virtus Investment Advisers, LLC | 19481 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 39660 | 388271 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Versant Capital Management, Inc | 1735057 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2044 | 20011 | — | — | — | Jul 2, 2026 | SEC_13F_DATASET |
| ALBION FINANCIAL GROUP /UT | 1054677 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 125 | 1224 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| DCF Advisers, LLC | 1802493 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 73247 | 717088 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| JANE STREET GROUP, LLC | 1595888 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 103600 | 1014244 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| DIMENSIONAL FUND ADVISORS LP | 354204 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 844696 | 8269574 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Duncan Williams Asset Management, LLC | 2011771 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 70281 | 688051 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| SJS Investment Consulting Inc. | 1894302 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3 | 30 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| HighMark Wealth Management LLC | 1802451 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 900 | 8811 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| STRS OHIO | 820478 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 17900 | 175241 | — | — | — | Jul 30, 2026 | SEC_13F_DATASET |
| JPMORGAN CHASE & CO | 19617 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 18440 | 183847 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Chicago Partners Investment Group LLC | 1563525 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 16129 | 137580 | — | — | — | Jul 30, 2026 | SEC_13F_DATASET |
| Birchview Capital, LP | 1618205 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 449019 | 4395896 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | 938076 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 15386 | 150629 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| TUDOR INVESTMENT CORP ET AL | 923093 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 24445 | 239317 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Savant Capital, LLC | 1482880 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 19503 | 190192 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| RHUMBLINE ADVISERS | 1115418 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 55896 | 547206 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 1081019 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6001 | 613 | — | — | — | Aug 24, 2026 | SEC_13F_DATASET |
| CARY STREET PARTNERS FINANCIAL LLC | 1475045 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 12500 | 122375 | — | — | — | Jul 17, 2026 | SEC_13F_DATASET |
| BANK OF AMERICA CORP /DE/ | 70858 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 177165 | 1734445 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| True Wealth Design, LLC | 1966033 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 103 | 1009 | — | — | — | Jul 16, 2026 | SEC_13F_DATASET |
| NEW YORK STATE COMMON RETIREMENT FUND | 810265 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8979 | 87904 | — | — | — | Jul 29, 2026 | SEC_13F_DATASET |
| Evelyn Partners Group Ltd | 2146944 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 199 | 1948 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Clearstead Advisors, LLC | 842775 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4 | 40 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Invesco Ltd. | 914208 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 47731 | 467286 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | 1632972 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11156 | 103081 | — | — | — | Jul 15, 2026 | SEC_13F_DATASET |
| China Universal Asset Management Co., Ltd. | 1906594 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8332 | 81570 | — | — | — | Jul 24, 2026 | SEC_13F_DATASET |
| Gould Capital, LLC | 1908965 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 100 | 979 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Blue Trust, Inc. | 1856022 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 33 | 323 | — | — | — | Jul 21, 2026 | SEC_13F_DATASET |
| Persistent Asset Partners Ltd | 2056052 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 38100 | 372999 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Nuveen, LLC | 1871926 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 541564 | 5301912 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Palo Alto Investors LP | 1306923 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1143155 | 11191487 | — | — | — | Aug 17, 2026 | SEC_13F_DATASET |
| MACKENZIE FINANCIAL CORP | 919859 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 239899 | 2348611 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Schonfeld Strategic Advisors LLC | 1665241 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 50350 | 492925 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO | 315297 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6552 | 64 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| ADAR1 Capital Management, LLC | 1940272 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1554535 | 15218898 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Quadrature Capital Ltd | 1651424 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10007 | 97969 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| SIMPLEX TRADING, LLC | 1488542 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 101000 | 988789 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| CANADA PENSION PLAN INVESTMENT BOARD | 1283718 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 24000 | 234960 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 861177 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 131 | 1282 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Rafferty Asset Management, LLC | 1389426 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 40397 | 395487 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| IFG Advisory, LLC | 1728319 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7 | 69 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| FORTRESS FINANCIAL GROUP, LLC | 2054451 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6 | 219783 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Engineers Gate Manager LP | 1620220 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 41270 | 404033 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Connor, Clark & Lunn Investment Management Ltd. | 1596800 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 191146 | 1871319 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| PNC Financial Services Group, Inc. | 713676 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 28286 | 276920 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 1141802 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 500 | 4895 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Ballentine Partners, LLC | 1374889 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 16793 | 164403 | — | — | — | Jul 17, 2026 | SEC_13F_DATASET |
| MARSHALL WACE, LLP | 1318757 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 178282 | 1745381 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| CITADEL ADVISORS LLC | 1423053 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 338810 | 3316950 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Focused Wealth Management, Inc | 1586052 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 207445 | 2030887 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Bank of New York Mellon Corp | 1390777 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 80895 | 791962 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| MERCER GLOBAL ADVISORS INC /ADV | 853758 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11454 | 112135 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| AQR CAPITAL MANAGEMENT LLC | 1167557 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 296127 | 2899083 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| HM PAYSON & CO | 928052 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 600 | 5874 | — | — | — | Jul 17, 2026 | SEC_13F_DATASET |
Informational research only, not financial advice. Forecasts are uncertain and can be wrong.