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, Q4 2024
Institutional positions in Prothena Corp Public Ltd Co as of Dec 31, 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
- 171
- +7 vs. Q3 2024
- Shares held
- 53.5M
- +2.54M (+5.0%) vs. Q3 2024
- Total value
- $741.3M
- −$114.5M (−13.4%) vs. Q3 2024
- New holders
- 35
- 63 more added
- Sold out
- 28
- 39 more reduced
Compare with Q3 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, Q4 2024
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | $160.4M | 6.43% | 00.0% | Unchanged |
| FMR LLC | 8,071,309 | $111.8M | 0.01% | +4,326+0.1% | Added |
| Wellington Management Group LLP | 5,130,876 | $71.1M | 0.01% | +952,088+22.8% | Added |
| BlackRock, Inc. | 4,122,376 | $57.1M | 0.00% | +93,989+2.3% | Added |
| Price T Rowe Associates Inc | 3,685,708 | $51.0M | 0.01% | −136,726−3.6% | Reduced |
| Armistice Capital, LLC | 2,236,000 | $31.0M | 0.72% | +586,000+35.5% | Added |
| State Street Corp | 1,861,641 | $25.8M | 0.00% | +186,732+11.1% | Added |
| Palo Alto Investors LP | 1,737,964 | $24.1M | 3.73% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,403,838 | $19.4M | 0.00% | +144,737+11.5% | Added |
| Siren, L.L.C. | 1,099,840 | $15.2M | 0.67% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 964,308 | $13.4M | 0.00% | +829+0.1% | Added |
| Dimensional Fund Advisors LP | 864,833 | $12.0M | 0.00% | +10,783+1.3% | Added |
| Federated Hermes, Inc. | 746,177 | $10.3M | 0.02% | +341,274+84.3% | Added |
| Morgan Stanley | 719,490 | $9.96M | 0.00% | +2030.0% | Added |
| Boxer Capital Management, LLC | 690,000 | $9.56M | 0.81% | +690,000 | New |
| Finepoint Capital LP | 657,071 | $9.10M | 1.05% | +223,600+51.6% | Added |
| Rock Springs Capital Management LP | 644,601 | $8.93M | 0.34% | +19,553+3.1% | Added |
| Goldman Sachs Group Inc | 556,526 | $7.71M | 0.00% | +141,237+34.0% | Added |
| Prosight Management, LP | 418,122 | $5.79M | 1.62% | −65,345−13.5% | Reduced |
| Northern Trust Corp | 404,496 | $5.60M | 0.00% | +31,841+8.5% | Added |
| JPMorgan Chase & Co | 387,350 | $5.36M | 0.00% | +187,364+93.7% | Added |
| UBS Asset Management Americas Inc | 381,508 | $5.28M | 0.00% | −145,240−27.6% | Reduced |
| UBS Group AG | 371,287 | $5.14M | 0.00% | +308,781+494.0% | Added |
| Mariner, LLC | 343,917 | $4.76M | 0.01% | +20,704+6.4% | Added |
| Charles Schwab Investment Management Inc | 327,151 | $4.53M | 0.00% | +2,189+0.7% | Added |
| Birchview Capital, LP | 304,574 | $4.22M | 3.43% | +95,000+45.3% | Added |
| Renaissance Technologies LLC | 201,900 | $2.80M | 0.00% | +19,100+10.4% | Added |
| Nuveen Asset Management, LLC | 152,107 | $2.11M | 0.00% | +381+0.3% | Added |
| Bank of New York Mellon Corp | 150,238 | $2.08M | 0.00% | +19,452+14.9% | Added |
| PDT Partners, LLC | 127,203 | $1.76M | 0.16% | +16,549+15.0% | Added |
| Millennium Management LLC | 123,005 | $1.70M | 0.00% | +10,467+9.3% | Added |
| AXA S.A. | 120,630 | $1.67M | 0.01% | −125−0.1% | Reduced |
| Bank of America Corp | 119,007 | $1.65M | 0.00% | +36,944+45.0% | Added |
| Barclays PLC | 105,338 | $1.46M | 0.00% | +10,116+10.6% | Added |
| DCF Advisers, LLC | 103,500 | $1.43M | 0.72% | −4,000−3.7% | Reduced |
| Pinnacle Associates Ltd | 103,081 | $1.43M | 0.02% | −22,666−18.0% | Reduced |
| BNP Paribas Arbitrage, SA | 97,383 | $1.35M | 0.00% | +41,541+74.4% | Added |
| Deutsche Bank AG | 95,970 | $1.33M | 0.00% | +63,512+195.7% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 91,840 | $1.27M | 0.01% | −30,652−25.0% | Reduced |
| Susquehanna Fundamental Investments, LLC | 80,677 | $1.12M | 0.02% | +80,677 | New |
| Rafferty Asset Management, LLC | 77,672 | $1.08M | 0.00% | +15,442+24.8% | Added |
| Man Group plc | 77,430 | $1.07M | 0.00% | +36,824+90.7% | Added |
| Manufacturers Life Insurance Company, The | 70,184 | $972.0K | 0.00% | −15,887−18.5% | Reduced |
| Duncan Williams Asset Management, LLC | 69,199 | $958.4K | 0.38% | +20,450+41.9% | Added |
| Swiss National Bank | 68,700 | $951.5K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 68,433 | $947.8K | 0.00% | +36,359+113.4% | Added |
| Rhumbline Advisers | 67,115 | $929.5K | 0.00% | +1,175+1.8% | Added |
| TD Asset Management Inc | 64,694 | $896.0K | 0.00% | −36,000−35.8% | Reduced |
| Boothbay Fund Management, LLC | 62,002 | $858.7K | 0.03% | +62,002 | New |
| Norges Bank | 57,454 | $795.7K | 0.00% | 00.0% | Unchanged |
| Jane Street Group, LLC | 55,528 | $769.1K | 0.00% | −39,916−41.8% | Reduced |
| Wells Fargo & Company | 52,823 | $731.6K | 0.00% | −13,376−20.2% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 52,284 | $724.1K | 0.03% | +52,284 | New |
| Alliancebernstein L.P. | 46,753 | $647.5K | 0.00% | +70.0% | Added |
| Massachusetts Financial Services Co | 44,815 | $620.7K | 0.00% | +44,815 | New |
| Alps Advisors Inc | 43,510 | $602.6K | 0.00% | +1,883+4.5% | Added |
| Invesco Ltd. | 42,846 | $593.4K | 0.00% | +1,632+4.0% | Added |
| Citadel Advisors LLC | 41,518 | $575.0K | 0.00% | −196,165−82.5% | Reduced |
| Legal & General Group Plc | 41,405 | $573.5K | 0.00% | +1,181+2.9% | Added |
| Verition Fund Management LLC | 39,422 | $546.0K | 0.00% | +39,422 | New |
| Thrivent Financial for Lutherans | 38,626 | $535.0K | 0.00% | −8,889−18.7% | Reduced |
| Two Sigma Investments, LP | 38,394 | $531.8K | 0.00% | +27,887+265.4% | Added |
| Balyasny Asset Management LLC | 38,021 | $526.6K | 0.00% | +38,021 | New |
| SG Americas Securities, LLC | 37,612 | $521.0K | 0.00% | +23,525+167.0% | Added |
| California State Teachers Retirement System | 33,243 | $460.4K | 0.00% | −319−1.0% | Reduced |
| Focused Wealth Management, Inc | 32,129 | $445.0K | 0.06% | +32,129 | New |
| American Century Companies Inc | 30,399 | $421.0K | 0.00% | +12,097+66.1% | Added |
| RBF Capital, LLC | 29,200 | $404.4K | 0.02% | −16,162−35.6% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 27,269 | $380.8K | 0.00% | +1,551+6.0% | Added |
| Tudor Investment Corp Et Al | 27,398 | $379.5K | 0.00% | −133−0.5% | Reduced |
| MetLife Investment Management | 25,873 | $358.3K | 0.00% | +536+2.1% | Added |
| Susquehanna International Group, LLP | 25,269 | $350.0K | 0.00% | −22,164−46.7% | Reduced |
| Edgewood Management LLC | 24,060 | $333.2K | 0.00% | 00.0% | Unchanged |
| Caption Management, LLC | 24,000 | $332.4K | 0.01% | +24,000 | New |
| HSBC Holdings PLC | 24,179 | $323.0K | 0.00% | +9,101+60.4% | Added |
| Intech Investment Management LLC | 22,383 | $310.0K | 0.00% | +9,828+78.3% | Added |
| Ensign Peak Advisors, Inc | 21,643 | $299.8K | 0.00% | 00.0% | Unchanged |
| Corebridge Financial, Inc. | 21,140 | $292.8K | 0.00% | −1,596−7.0% | Reduced |
| Handelsbanken Fonder AB | 20,900 | $289.0K | 0.00% | +5,500+35.7% | Added |
| Franklin Resources Inc | 19,687 | $272.7K | 0.00% | +19,687 | New |
| Foundation Wealth Management, LLC | 19,471 | $269.7K | 0.21% | +19,471 | New |
| Cresset Asset Management, LLC | 19,434 | $269.2K | 0.00% | −4,991−20.4% | Reduced |
| XTX Topco Ltd | 18,665 | $258.5K | 0.02% | +3,101+19.9% | Added |
| Janus Henderson Group PLC | 18,047 | $249.4K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 16,826 | $233.0K | 0.00% | +11,369+208.3% | Added |
| Schroder Investment Management Group | 15,000 | $223.2K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 16,061 | $222.4K | 0.00% | −4,846−23.2% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 16,030 | $222.0K | 0.00% | +5,794+56.6% | Added |
| State Board of Administration of Florida Retirement System | 15,386 | $213.1K | 0.00% | 00.0% | Unchanged |
| Profund Advisors LLC | 15,212 | $210.7K | 0.01% | +2,551+20.1% | Added |
| DekaBank Deutsche Girozentrale | 14,000 | $208.0K | 0.00% | 00.0% | Unchanged |
| Walleye Capital LLC | 14,953 | $207.1K | 0.00% | +14,953 | New |
| ProShare Advisors LLC | 14,524 | $201.2K | 0.00% | +3,312+29.5% | Added |
| New York State Common Retirement Fund | 14,279 | $197.8K | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Inc | 13,111 | $181.6K | 0.00% | +13,111 | New |
| KLP Kapitalforvaltning AS | 12,900 | $178.7K | 0.00% | +12,900 | New |
| Voya Investment Management LLC | 12,829 | $177.7K | 0.00% | −1,128−8.1% | Reduced |
| Cary Street Partners Financial LLC | 12,500 | $173.1K | 0.01% | +12,500 | New |
| Wolverine Trading, LLC | 11,162 | $166.1K | 0.00% | +11,162 | New |
| Chicago Partners Investment Group LLC | 11,197 | $158.6K | 0.01% | +11,197 | New |