Prothena Corp Public Ltd Co
PRTA- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001559053
In the last 90 days, Prothena Corp Public Ltd Co insiders filed 4 open-market purchases and 2 sales; 187 institutions reported holding it in 13F filings for Q2 2026, worth $462.7M in total; no superinvestor holds it.
13F holders, Q2 2024
Institutional positions in Prothena Corp Public Ltd Co as of Jun 30, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 160
- −7 vs. Q1 2024
- Shares held
- 50.8M
- −2.61M (−4.9%) vs. Q1 2024
- Total value
- $1.05B
- −$275.2M (−20.8%) vs. Q1 2024
- New holders
- 27
- 58 more added
- Sold out
- 34
- 42 more reduced
2 institutions that held it in Q1 2024 haven't filed for Q2 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PRTA on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 187 | $462.7M |
| Q1 2026 | 186 | $459.5M |
| Q4 2025 | 182 | $451.6M |
| Q3 2025 | 187 | $415.8M |
| Q2 2025 | 189 | $253.6M |
| Q1 2025 | 161 | $647.2M |
| Q4 2024 | 171 | $741.3M |
| Q3 2024 | 164 | $855.8M |
| Q2 2024 | 160 | $1.05B |
| Q1 2024 | 169 | $1.33B |
| Q4 2023 | 187 | $1.95B |
| Q3 2023 | 187 | $2.56B |
| Q2 2023 | 196 | $3.54B |
| Q1 2023 | 192 | $2.51B |
| Q4 2022 | 201 | $2.98B |
| Q3 2022 | 183 | $2.69B |
| Q2 2022 | 167 | $1.21B |
| Q1 2022 | 174 | $1.61B |
| Q4 2021 | 196 | $2.12B |
| Q3 2021 | 192 | $2.92B |
| Q2 2021 | 156 | $2.08B |
| Q1 2021 | 146 | $1.00B |
Institutions, Q2 2024
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q1 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | $239.1M | 7.32% | 00.0% | Unchanged |
| FMR LLC | 8,065,677 | $166.5M | 0.01% | +59,266+0.7% | Added |
| Price T Rowe Associates Inc | 4,237,404 | $87.5M | 0.01% | +35,633+0.8% | Added |
| BlackRock Inc. | 3,857,079 | $79.6M | 0.00% | +138,266+3.7% | Added |
| Wellington Management Group LLP | 3,639,429 | $75.1M | 0.01% | −112,718−3.0% | Reduced |
| State Street Corp | 1,932,472 | $39.9M | 0.00% | −1,541,524−44.4% | Reduced |
| Palo Alto Investors LP | 1,666,378 | $34.4M | 3.99% | +2,930+0.2% | Added |
| Armistice Capital, LLC | 1,560,000 | $32.2M | 0.84% | +464,000+42.3% | Added |
| Vanguard Group Inc | 1,171,747 | $24.2M | 0.00% | +46,464+4.1% | Added |
| Janus Henderson Group PLC | 1,026,558 | $21.2M | 0.01% | −283,032−21.6% | Reduced |
| Artal Group S.A. | 1,001,360 | $20.7M | 0.53% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 994,278 | $20.5M | 0.00% | +69,698+7.5% | Added |
| Dimensional Fund Advisors LP | 861,584 | $17.8M | 0.00% | −1,248−0.1% | Reduced |
| Morgan Stanley | 810,703 | $16.7M | 0.00% | +158,235+24.3% | Added |
| Boxer Capital, LLC | 690,000 | $14.2M | 0.75% | 00.0% | Unchanged |
| Rock Springs Capital Management LP | 625,048 | $12.9M | 0.39% | 00.0% | Unchanged |
| Finepoint Capital LP | 433,471 | $8.95M | 2.54% | +31,071+7.7% | Added |
| Northern Trust Corp | 364,106 | $7.52M | 0.00% | −33,157−8.3% | Reduced |
| Citadel Advisors LLC | 353,153 | $7.29M | 0.01% | +118,227+50.3% | Added |
| Goldman Sachs Group Inc | 350,130 | $7.23M | 0.00% | +41,243+13.4% | Added |
| Granahan Investment Management Inc | 335,660 | $6.93M | 0.28% | +1,740+0.5% | Added |
| Renaissance Technologies LLC | 329,500 | $6.80M | 0.01% | −60,200−15.4% | Reduced |
| Charles Schwab Investment Management Inc | 327,139 | $6.75M | 0.00% | +8,234+2.6% | Added |
| JPMorgan Chase & Co | 295,965 | $6.11M | 0.00% | −2,126−0.7% | Reduced |
| Prosight Management, LP | 286,926 | $5.92M | 1.77% | +116,457+68.3% | Added |
| Birchview Capital, LP | 203,574 | $4.20M | 3.88% | +34,000+20.1% | Added |
| Mariner, LLC | 198,035 | $4.09M | 0.01% | +21,069+11.9% | Added |
| Systematic Financial Management LP | 193,763 | $4.00M | 0.12% | +39,771+25.8% | Added |
| Bank of New York Mellon Corp | 165,423 | $3.41M | 0.00% | +19,578+13.4% | Added |
| Nuveen Asset Management, LLC | 152,353 | $3.14M | 0.00% | −90,669−37.3% | Reduced |
| Pinnacle Associates Ltd | 122,900 | $2.54M | 0.04% | −2,364−1.9% | Reduced |
| Jane Street Group, LLC | 121,465 | $2.51M | 0.00% | +67,069+123.3% | Added |
| AXA S.A. | 120,719 | $2.49M | 0.01% | +69+0.1% | Added |
| Bank of America Corp | 118,864 | $2.45M | 0.00% | −121,479−50.5% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 112,826 | $2.33M | 0.01% | −19,079−14.5% | Reduced |
| DCF Advisers, LLC | 107,500 | $2.22M | 1.16% | +500+0.5% | Added |
| PDT Partners, LLC | 102,708 | $2.12M | 0.20% | +102,708 | New |
| TD Asset Management Inc | 100,694 | $2.08M | 0.00% | −15,644−13.4% | Reduced |
| Rafferty Asset Management, LLC | 97,019 | $2.00M | 0.01% | −206,436−68.0% | Reduced |
| Manufacturers Life Insurance Company, The | 82,908 | $1.71M | 0.00% | +327+0.4% | Added |
| Algert Global LLC | 77,191 | $1.59M | 0.05% | +28,841+59.7% | Added |
| Two Sigma Investments, LP | 71,559 | $1.48M | 0.00% | +71,559 | New |
| Rhumbline Advisers | 69,756 | $1.44M | 0.00% | +6,256+9.9% | Added |
| Swiss National Bank | 68,700 | $1.42M | 0.00% | −10,500−13.3% | Reduced |
| Wells Fargo & Company | 60,711 | $1.25M | 0.00% | +9,662+18.9% | Added |
| Norges Bank | 57,454 | $1.19M | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 54,572 | $1.13M | 0.01% | +37,852+226.4% | Added |
| Thrivent Financial for Lutherans | 47,515 | $980.0K | 0.00% | −2,028−4.1% | Reduced |
| ExodusPoint Capital Management, LP | 47,107 | $972.0K | 0.01% | +47,107 | New |
| Alliancebernstein L.P. | 46,746 | $964.8K | 0.00% | 00.0% | Unchanged |
| Walleye Capital LLC | 46,098 | $951.5K | 0.01% | +44,879+3,681.6% | Added |
| RBF Capital, LLC | 45,362 | $936.3K | 0.05% | 00.0% | Unchanged |
| Barclays PLC | 45,306 | $935.1K | 0.00% | −13,026−22.3% | Reduced |
| UBS Group AG | 44,768 | $924.0K | 0.00% | −153,912−77.5% | Reduced |
| Federated Hermes, Inc. | 43,861 | $905.3K | 0.00% | +43,861 | New |
| Guggenheim Capital LLC | 43,248 | $892.6K | 0.01% | −1,152−2.6% | Reduced |
| UBS Asset Management Americas Inc | 43,075 | $889.1K | 0.00% | −332,090−88.5% | Reduced |
| Jump Financial, LLC | 42,800 | $883.4K | 0.02% | +14,849+53.1% | Added |
| Alps Advisors Inc | 41,935 | $865.5K | 0.01% | +4,046+10.7% | Added |
| Invesco Ltd. | 41,103 | $848.4K | 0.00% | +599+1.5% | Added |
| Man Group plc | 40,529 | $836.5K | 0.00% | +10,850+36.6% | Added |
| Legal & General Group Plc | 38,774 | $800.3K | 0.00% | −101−0.3% | Reduced |
| BNP Paribas Arbitrage, SA | 38,612 | $797.0K | 0.00% | +6,359+19.7% | Added |
| Primecap Management Co | 36,500 | $753.4K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 34,768 | $717.6K | 0.00% | −5,674−14.0% | Reduced |
| Susquehanna International Group, LLP | 33,790 | $697.4K | 0.00% | −26,190−43.7% | Reduced |
| Millennium Management LLC | 31,292 | $645.9K | 0.00% | −290,949−90.3% | Reduced |
| Voya Investment Management LLC | 30,872 | $637.2K | 0.00% | −12,802−29.3% | Reduced |
| Cresset Asset Management, LLC | 28,298 | $584.1K | 0.00% | +28,298 | New |
| Deutsche Bank AG | 27,554 | $568.7K | 0.00% | −4,343−13.6% | Reduced |
| State of Wisconsin Investment Board | 27,401 | $565.6K | 0.00% | −5,758−17.4% | Reduced |
| Tudor Investment Corp Et Al | 26,795 | $553.0K | 0.01% | +26,795 | New |
| MetLife Investment Management | 25,337 | $523.0K | 0.00% | +3,485+15.9% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 24,804 | $511.6K | 0.00% | +24,804 | New |
| Citigroup Inc | 24,664 | $509.1K | 0.00% | −235,208−90.5% | Reduced |
| Edgewood Management LLC | 24,060 | $496.6K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 23,422 | $483.0K | 0.00% | +23,422 | New |
| Corebridge Financial, Inc. | 22,876 | $472.2K | 0.00% | +22,876 | New |
| Brevan Howard Capital Management LP | 21,821 | $450.4K | 0.03% | +21,821 | New |
| Ensign Peak Advisors, Inc | 21,643 | $446.7K | 0.00% | +5,050+30.4% | Added |
| Y-Intercept (Hong Kong) Ltd | 21,351 | $440.7K | 0.02% | +21,351 | New |
| Focused Wealth Management, Inc | 20,129 | $415.5K | 0.06% | +10,000+98.7% | Added |
| HighTower Advisors, LLC | 18,717 | $386.0K | 0.00% | +102+0.5% | Added |
| Fox Run Management, L.L.C. | 18,591 | $383.7K | 0.07% | +18,591 | New |
| New York State Common Retirement Fund | 18,379 | $379.3K | 0.00% | −13,971−43.2% | Reduced |
| Profund Advisors LLC | 18,073 | $373.0K | 0.01% | −28,805−61.4% | Reduced |
| Brinker Capital Investments, LLC | 16,792 | $346.6K | 0.00% | +6,634+65.3% | Added |
| Orion Portfolio Solutions, LLC | 16,792 | $346.6K | 0.00% | +6,634+65.3% | Added |
| HighMark Wealth Management LLC | 16,502 | $340.6K | 0.20% | 00.0% | Unchanged |
| Verition Fund Management LLC | 15,757 | $325.2K | 0.00% | +15,757 | New |
| Amundi | 15,899 | $319.1K | 0.00% | +15,899 | New |
| Handelsbanken Fonder AB | 15,400 | $318.0K | 0.00% | +6,000+63.8% | Added |
| State Board of Administration of Florida Retirement System | 15,386 | $317.6K | 0.00% | +4,100+36.3% | Added |
| Schroder Investment Management Group | 15,000 | $309.6K | 0.00% | −771−4.9% | Reduced |
| Teachers Retirement System of the State of Kentucky | 14,039 | $290.0K | 0.00% | 00.0% | Unchanged |
| DekaBank Deutsche Girozentrale | 14,000 | $285.0K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 11,200 | $231.2K | 0.00% | +1,100+10.9% | Added |
| NEOS Investment Management LLC | 10,511 | $216.9K | 0.01% | +10,511 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 10,236 | $211.3K | 0.00% | +1,186+13.1% | Added |
| Arizona State Retirement System | 9,776 | $201.8K | 0.00% | −1,285−11.6% | Reduced |