Prothena Corp.PRTA
13F holders, Q2 2024 (June 30)160holders −9
25new positions
34sold out
4famous investors
$20.64avg. 13F price*
At the end of Q2 2024, 160 institutions reported holding Prothena Corp. PLC (PRTA) in their 13F filings, down 9 from Q1 2024. 25 opened new positions and 34 sold out. The largest holders were EcoR1 Capital, LLC ($239.1M), FMR LLC ($166.5M) and T. Rowe Price Associates Inc. ($87.5M). 4 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio).
- Company
- Prothena Corp. PLC
- CUSIP
- G72800108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2024 → Q2 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 25 | $9.4M |
| Exits | 34 | $28.4M |
All 13F filers, Q1 2024 → Q2 2024: 2,155,821 shares bought and 4,813,154 shares sold, net −2,657,333 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 160 holders
| EcoR1 Capital, LLC | 7.32% | No change | 11,584,280 | $239.1M |
| FMR LLC | 0.01% | Add +0.7% | 8,065,677 | $166.5M |
| T. Rowe Price Associates Inc. | 0.01% | Add +0.8% | 4,237,404 | $87.5M |
| BlackRock Inc. | 0.00% | Add +3.7% | 3,857,079 | $79.6M |
| Wellington Management Group LLP | 0.01% | Reduce -3.0% | 3,639,429 | $75.1M |
| State Street Corp. | 0.00% | Reduce -44.4% | 1,932,472 | $39.9M |
| Palo Alto Investors LP | 3.99% | Add +0.2% | 1,666,378 | $34.4M |
| Armistice Capital, LLC | 0.84% | Add +42.3% | 1,560,000 | $32.2M |
| Vanguard Group Inc. | 0.00% | Add +4.1% | 1,171,747 | $24.2M |
| Janus Henderson Group PLC | 0.01% | Reduce -21.6% | 1,026,558 | $21.2M |
| Artal Group S.A. | 0.53% | No change | 1,001,360 | $20.7M |
| Geode Capital Management, LLC | 0.00% | Add +7.5% | 994,278 | $20.5M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -0.1% | 861,584 | $17.8M |
| Morgan Stanley | 0.00% | Add +24.3% | 810,703 | $16.7M |
| Boxer Capital, LLC | 0.75% | No change | 690,000 | $14.2M |
| Rock Springs Capital Management LP | 0.39% | No change | 625,048 | $12.9M |
| Finepoint Capital LP | 2.54% | Add +7.7% | 433,471 | $8.9M |
| Northern Trust Corp. | 0.00% | Reduce -8.3% | 364,106 | $7.5M |
| Citadel Advisors | 0.01% | Add +50.3% | 353,153 | $7.3M |
| Goldman Sachs Group Inc. | 0.00% | Add +13.3% | 350,130 | $7.2M |
| Granahan Investment Management, LLC | 0.28% | Add +0.5% | 335,660 | $6.9M |
| Renaissance Technologies | 0.01% | Reduce -15.4% | 329,500 | $6.8M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +2.6% | 327,139 | $6.8M |
| JPMorgan Chase & Co. | 0.00% | Reduce -0.7% | 295,965 | $6.1M |
| Prosight Management, LP | 1.77% | Add +68.3% | 286,926 | $5.9M |
| Birchview Capital, LP | 3.88% | Add +20.1% | 203,574 | $4.2M |
| Mariner, LLC | 0.01% | Add +11.9% | 198,035 | $4.1M |
| Systematic Financial Management LP | 0.12% | Add +25.8% | 193,763 | $4.0M |
| Bank of New York Mellon Corp | 0.00% | Add +13.4% | 165,423 | $3.4M |
| Nuveen Asset Management, LLC | 0.00% | Reduce -37.3% | 152,353 | $3.1M |
| Pinnacle Associates Ltd. | 0.04% | Reduce -1.9% | 122,900 | $2.5M |
| Jane Street Group, LLC | 0.00% | Add +123.3% | 121,465 | $2.5M |
| AXA S.A. | 0.01% | Add +0.1% | 120,719 | $2.5M |
| Bank of America Corp. | 0.00% | Reduce -50.5% | 118,864 | $2.5M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | Reduce -14.5% | 112,826 | $2.3M |
| DCF Advisers, LLC | 1.18% | Add +0.5% | 107,500 | $2.2M |
| PDT Partners, LLC | 0.20% | New | 102,708 | $2.1M |
| TD Asset Management Inc | 0.00% | Reduce -13.4% | 100,694 | $2.1M |
| Rafferty Asset Management, LLC | 0.01% | Reduce -68.0% | 97,019 | $2.0M |
| Manufacturers Life Insurance Company, The | 0.00% | Add +0.4% | 82,908 | $1.7M |
| Algert Global LLC | 0.05% | Add +59.6% | 77,191 | $1.6M |
| Two Sigma Investments, LP | 0.00% | New | 71,559 | $1.5M |
| Rhumbline Advisers | 0.00% | Add +9.8% | 69,756 | $1.4M |
| Swiss National Bank | 0.00% | Reduce -13.3% | 68,700 | $1.4M |
| Wells Fargo & Company | 0.00% | Add +18.9% | 60,711 | $1.3M |
| Norges Bank | 0.00% | No change | 57,454 | $1.2M |
| SG Americas Securities, LLC | 0.01% | Add +226.4% | 54,572 | $1.1M |
| Thrivent Financial for Lutherans | 0.00% | Reduce -4.1% | 47,515 | $980K |
| ExodusPoint Capital Management, LP | 0.01% | New | 47,107 | $972K |
| Alliancebernstein L.P. | 0.00% | No change | 46,746 | $965K |
| Walleye Capital LLC | 0.01% | Add +3681.6% | 46,098 | $951K |
| RBF Capital, LLC | 0.05% | No change | 45,362 | $936K |
| Barclays PLC | 0.00% | Reduce -22.3% | 45,306 | $935K |
| UBS Group AG | 0.00% | Reduce -77.5% | 44,768 | $924K |
| Federated Hermes, Inc. | 0.00% | New | 43,861 | $905K |
| Guggenheim Capital LLC | 0.01% | Reduce -2.6% | 43,248 | $893K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -88.5% | 43,075 | $889K |
| Jump Financial, LLC | 0.02% | Add +53.1% | 42,800 | $883K |
| Alps Advisors Inc. | 0.01% | Add +10.7% | 41,935 | $866K |
| Invesco Ltd. | 0.00% | Add +1.5% | 41,103 | $848K |
| Man Group plc | 0.00% | Add +36.6% | 40,529 | $837K |
| Legal & General Group Plc | 0.00% | Reduce -0.3% | 38,774 | $800K |
| BNP Paribas Financial Markets | 0.00% | Add +19.7% | 38,612 | $797K |
| Primecap Management Co. | 0.00% | No change | 36,500 | $753K |
| California State Teachers Retirement System | 0.00% | Reduce -14.0% | 34,768 | $718K |
| Susquehanna International Group, LLP | 0.00% | Reduce -43.7% | 33,790 | $697K |
| Millennium Management | 0.00% | Reduce -90.3% | 31,292 | $646K |
| Voya Investment Management LLC | 0.00% | Reduce -29.3% | 30,872 | $637K |
| Cresset Asset Management, LLC | 0.00% | New | 28,298 | $584K |
| Deutsche Bank AG | 0.00% | Reduce -13.6% | 27,554 | $569K |
| State of Wisconsin Investment Board | 0.00% | Reduce -17.4% | 27,401 | $566K |
| Tudor Investment Corporation | 0.01% | New | 26,795 | $553K |
| MetLife Investment Management, LLC | 0.00% | Add +15.9% | 25,337 | $523K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | — | 24,804 | $512K |
| Citigroup Inc. | 0.00% | Reduce -90.5% | 24,664 | $509K |
| Edgewood Management LLC | 0.00% | No change | 24,060 | $497K |
| HRT Financial LP | 0.00% | New | 23,422 | $483K |
| Corebridge Financial, Inc. | 0.00% | — | 22,876 | $472K |
| Brevan Howard Capital Management LP | 0.03% | New | 21,821 | $450K |
| Ensign Peak Advisors, Inc | 0.00% | Add +30.4% | 21,643 | $447K |
| Y-Intercept (Hong Kong) Ltd | 0.02% | New | 21,351 | $441K |
| Focused Wealth Management, Inc | 0.06% | Add +98.7% | 20,129 | $415K |
| HighTower Advisors, LLC | 0.00% | Add +0.6% | 18,717 | $386K |
| Fox Run Management, L.L.C. | 0.07% | New | 18,591 | $384K |
| New York State Common Retirement Fund | 0.00% | Reduce -43.2% | 18,379 | $379K |
| Profund Advisors LLC | 0.01% | Reduce -61.5% | 18,073 | $373K |
| Orion Porfolio Solutions, LLC | 0.00% | Add +65.3% | 16,792 | $347K |
| Orion Portfolio Solutions, LLC | 0.00% | Add +65.3% | 16,792 | $347K |
| HighMark Wealth Management LLC | 0.20% | No change | 16,502 | $341K |
| Verition Fund Management LLC | 0.00% | New | 15,757 | $325K |
| Amundi | 0.00% | New | 15,899 | $319K |
| Handelsbanken Fonder AB | 0.00% | Add +63.8% | 15,400 | $318K |
| State Board of Administration of Florida Retirement System | 0.00% | Add +36.3% | 15,386 | $318K |
| Schroder Investment Management Group | 0.00% | Reduce -4.9% | 15,000 | $310K |
| Teachers Retirement System of the State of Kentucky | 0.00% | No change | 14,039 | $290K |
| DekaBank Deutsche Girozentrale | 0.00% | No change | 14,000 | $285K |
| STRS Ohio | 0.00% | Add +10.9% | 11,200 | $231K |
| NEOS Investment Management LLC | 0.01% | New | 10,511 | $217K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Add +13.1% | 10,236 | $211K |
| Arizona State Retirement System | 0.00% | Reduce -11.6% | 9,776 | $202K |
"% of holder's portfolio" is PRTA's weight in each manager's 13F, not the share of Prothena Corp. PLC the manager owns.