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 |
|---|---|---|---|---|---|
| MetLife Investment Management | 25,873 | $358.3K | 0.00% | +536+2.1% | Added |
| Tudor Investment Corp Et Al | 27,398 | $379.5K | 0.00% | −133−0.5% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 27,269 | $380.8K | 0.00% | +1,551+6.0% | Added |
| RBF Capital, LLC | 29,200 | $404.4K | 0.02% | −16,162−35.6% | Reduced |
| American Century Companies Inc | 30,399 | $421.0K | 0.00% | +12,097+66.1% | Added |
| Focused Wealth Management, Inc | 32,129 | $445.0K | 0.06% | +32,129 | New |
| California State Teachers Retirement System | 33,243 | $460.4K | 0.00% | −319−1.0% | Reduced |
| SG Americas Securities, LLC | 37,612 | $521.0K | 0.00% | +23,525+167.0% | Added |
| Balyasny Asset Management LLC | 38,021 | $526.6K | 0.00% | +38,021 | New |
| Two Sigma Investments, LP | 38,394 | $531.8K | 0.00% | +27,887+265.4% | Added |
| Thrivent Financial for Lutherans | 38,626 | $535.0K | 0.00% | −8,889−18.7% | Reduced |
| Verition Fund Management LLC | 39,422 | $546.0K | 0.00% | +39,422 | New |
| Legal & General Group Plc | 41,405 | $573.5K | 0.00% | +1,181+2.9% | Added |
| Citadel Advisors LLC | 41,518 | $575.0K | 0.00% | −196,165−82.5% | Reduced |
| Invesco Ltd. | 42,846 | $593.4K | 0.00% | +1,632+4.0% | Added |
| Alps Advisors Inc | 43,510 | $602.6K | 0.00% | +1,883+4.5% | Added |
| Massachusetts Financial Services Co | 44,815 | $620.7K | 0.00% | +44,815 | New |
| Alliancebernstein L.P. | 46,753 | $647.5K | 0.00% | +70.0% | Added |
| Hennion & Walsh Asset Management, Inc. | 52,284 | $724.1K | 0.03% | +52,284 | New |
| Wells Fargo & Company | 52,823 | $731.6K | 0.00% | −13,376−20.2% | Reduced |
| Jane Street Group, LLC | 55,528 | $769.1K | 0.00% | −39,916−41.8% | Reduced |
| Norges Bank | 57,454 | $795.7K | 0.00% | 00.0% | Unchanged |
| Boothbay Fund Management, LLC | 62,002 | $858.7K | 0.03% | +62,002 | New |
| TD Asset Management Inc | 64,694 | $896.0K | 0.00% | −36,000−35.8% | Reduced |
| Rhumbline Advisers | 67,115 | $929.5K | 0.00% | +1,175+1.8% | Added |
| Citigroup Inc | 68,433 | $947.8K | 0.00% | +36,359+113.4% | Added |
| Swiss National Bank | 68,700 | $951.5K | 0.00% | 00.0% | Unchanged |
| Duncan Williams Asset Management, LLC | 69,199 | $958.4K | 0.38% | +20,450+41.9% | Added |
| Manufacturers Life Insurance Company, The | 70,184 | $972.0K | 0.00% | −15,887−18.5% | Reduced |
| Man Group plc | 77,430 | $1.07M | 0.00% | +36,824+90.7% | Added |
| Rafferty Asset Management, LLC | 77,672 | $1.08M | 0.00% | +15,442+24.8% | Added |
| Susquehanna Fundamental Investments, LLC | 80,677 | $1.12M | 0.02% | +80,677 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 91,840 | $1.27M | 0.01% | −30,652−25.0% | Reduced |
| Deutsche Bank AG | 95,970 | $1.33M | 0.00% | +63,512+195.7% | Added |
| BNP Paribas Arbitrage, SA | 97,383 | $1.35M | 0.00% | +41,541+74.4% | Added |
| Pinnacle Associates Ltd | 103,081 | $1.43M | 0.02% | −22,666−18.0% | Reduced |
| DCF Advisers, LLC | 103,500 | $1.43M | 0.72% | −4,000−3.7% | Reduced |
| Barclays PLC | 105,338 | $1.46M | 0.00% | +10,116+10.6% | Added |
| Bank of America Corp | 119,007 | $1.65M | 0.00% | +36,944+45.0% | Added |
| AXA S.A. | 120,630 | $1.67M | 0.01% | −125−0.1% | Reduced |
| Millennium Management LLC | 123,005 | $1.70M | 0.00% | +10,467+9.3% | Added |
| PDT Partners, LLC | 127,203 | $1.76M | 0.16% | +16,549+15.0% | Added |
| Bank of New York Mellon Corp | 150,238 | $2.08M | 0.00% | +19,452+14.9% | Added |
| Nuveen Asset Management, LLC | 152,107 | $2.11M | 0.00% | +381+0.3% | Added |
| Renaissance Technologies LLC | 201,900 | $2.80M | 0.00% | +19,100+10.4% | Added |
| Birchview Capital, LP | 304,574 | $4.22M | 3.43% | +95,000+45.3% | Added |
| Charles Schwab Investment Management Inc | 327,151 | $4.53M | 0.00% | +2,189+0.7% | Added |
| Mariner, LLC | 343,917 | $4.76M | 0.01% | +20,704+6.4% | Added |
| UBS Group AG | 371,287 | $5.14M | 0.00% | +308,781+494.0% | Added |
| UBS Asset Management Americas Inc | 381,508 | $5.28M | 0.00% | −145,240−27.6% | Reduced |
| JPMorgan Chase & Co | 387,350 | $5.36M | 0.00% | +187,364+93.7% | Added |
| Northern Trust Corp | 404,496 | $5.60M | 0.00% | +31,841+8.5% | Added |
| Prosight Management, LP | 418,122 | $5.79M | 1.62% | −65,345−13.5% | Reduced |
| Goldman Sachs Group Inc | 556,526 | $7.71M | 0.00% | +141,237+34.0% | Added |
| Rock Springs Capital Management LP | 644,601 | $8.93M | 0.34% | +19,553+3.1% | Added |
| Finepoint Capital LP | 657,071 | $9.10M | 1.05% | +223,600+51.6% | Added |
| Boxer Capital Management, LLC | 690,000 | $9.56M | 0.81% | +690,000 | New |
| Morgan Stanley | 719,490 | $9.96M | 0.00% | +2030.0% | Added |
| Federated Hermes, Inc. | 746,177 | $10.3M | 0.02% | +341,274+84.3% | Added |
| Dimensional Fund Advisors LP | 864,833 | $12.0M | 0.00% | +10,783+1.3% | Added |
| Geode Capital Management, LLC | 964,308 | $13.4M | 0.00% | +829+0.1% | Added |
| Siren, L.L.C. | 1,099,840 | $15.2M | 0.67% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,403,838 | $19.4M | 0.00% | +144,737+11.5% | Added |
| Palo Alto Investors LP | 1,737,964 | $24.1M | 3.73% | 00.0% | Unchanged |
| State Street Corp | 1,861,641 | $25.8M | 0.00% | +186,732+11.1% | Added |
| Armistice Capital, LLC | 2,236,000 | $31.0M | 0.72% | +586,000+35.5% | Added |
| Price T Rowe Associates Inc | 3,685,708 | $51.0M | 0.01% | −136,726−3.6% | Reduced |
| BlackRock, Inc. | 4,122,376 | $57.1M | 0.00% | +93,989+2.3% | Added |
| Wellington Management Group LLP | 5,130,876 | $71.1M | 0.01% | +952,088+22.8% | Added |
| FMR LLC | 8,071,309 | $111.8M | 0.01% | +4,326+0.1% | Added |
| EcoR1 Capital, LLC | 11,584,280 | $160.4M | 6.43% | 00.0% | Unchanged |
| Boxer Capital, LLC | 0 | $0 | 0.00% | −690,000−100.0% | Sold out |
| Granahan Investment Management Inc | 0 | $0 | 0.00% | −312,520−100.0% | Sold out |
| Deep Track Capital, LP | 0 | $0 | 0.00% | −140,000−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −72,961−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −62,272−100.0% | Sold out |
| Capula Management Ltd | 0 | $0 | 0.00% | −43,197−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −42,173−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −41,809−100.0% | Sold out |
| Primecap Management Co | 0 | $0 | 0.00% | −35,500−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −32,407−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −28,941−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −27,582−100.0% | Sold out |
| State of Wisconsin Investment Board | 0 | $0 | 0.00% | −27,401−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −25,764−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −20,573−100.0% | Sold out |
| Brinker Capital Investments, LLC | 0 | $0 | 0.00% | −17,531−100.0% | Sold out |
| Orion Portfolio Solutions, LLC | 0 | $0 | 0.00% | −17,531−100.0% | Sold out |
| Teachers Retirement System of the State of Kentucky | 0 | $0 | 0.00% | −14,039−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −13,320−100.0% | Sold out |
| Systematic Financial Management LP | 0 | $0 | 0.00% | −8,125−100.0% | Sold out |
| Catalyst Funds Management Pty Ltd | 0 | $0 | 0.00% | −6,700−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −5,977−100.0% | Sold out |
| Danske Bank A/S | 0 | $0 | 0.00% | −1,400−100.0% | Sold out |
| Byrne Asset Management LLC | 0 | $0 | 0.00% | −760−100.0% | Sold out |
| Smartleaf Asset Management LLC | 0 | $0 | 0.00% | −269−100.0% | Sold out |
| Cornerstone Planning Group LLC | 0 | $0 | 0.00% | −110−100.0% | Sold out |
| Allspring Global Investments Holdings, LLC | 0 | $0 | 0.00% | −73−100.0% | Sold out |
| Bessemer Group Inc | 0 | $0 | 0.00% | −55−100.0% | Sold out |