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 6 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, Q3 2024
Institutional positions in Prothena Corp Public Ltd Co as of Sep 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
- 164
- +5 vs. Q2 2024
- Shares held
- 51.0M
- +4.02M (+8.6%) vs. Q2 2024
- Total value
- $855.8M
- −$113.4M (−11.7%) vs. Q2 2024
- New holders
- 24
- 50 more added
- Sold out
- 19
- 45 more reduced
1 institution that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2024
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Primecap Management Co | 35,500 | $593.9K | 0.00% | −1,000−2.7% | Reduced |
| Legal & General Group Plc | 40,224 | $672.9K | 0.00% | +1,450+3.7% | Added |
| Man Group plc | 40,606 | $679.3K | 0.00% | +77+0.2% | Added |
| Invesco Ltd. | 41,214 | $689.5K | 0.00% | +111+0.3% | Added |
| Alps Advisors Inc | 41,627 | $696.4K | 0.00% | −308−0.7% | Reduced |
| HRT Financial LP | 41,809 | $699.0K | 0.00% | +18,387+78.5% | Added |
| Lazard Asset Management LLC | 42,173 | $705.0K | 0.00% | +42,173 | New |
| Capula Management Ltd | 43,197 | $722.7K | 0.01% | +43,197 | New |
| RBF Capital, LLC | 45,362 | $758.9K | 0.04% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 46,746 | $782.1K | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 47,433 | $793.6K | 0.00% | +13,643+40.4% | Added |
| Thrivent Financial for Lutherans | 47,515 | $795.0K | 0.00% | 00.0% | Unchanged |
| Duncan Williams Asset Management, LLC | 48,749 | $815.6K | 0.45% | +48,749 | New |
| BNP Paribas Arbitrage, SA | 55,842 | $934.2K | 0.00% | +17,230+44.6% | Added |
| Norges Bank | 57,454 | $961.2K | 0.00% | 00.0% | Unchanged |
| Rafferty Asset Management, LLC | 62,230 | $1.04M | 0.00% | −34,789−35.9% | Reduced |
| Schonfeld Strategic Advisors LLC | 62,272 | $1.04M | 0.01% | +62,272 | New |
| UBS Group AG | 62,506 | $1.05M | 0.00% | +17,738+39.6% | Added |
| Rhumbline Advisers | 65,940 | $1.10M | 0.00% | −3,816−5.5% | Reduced |
| Wells Fargo & Company | 66,199 | $1.11M | 0.00% | +5,488+9.0% | Added |
| Swiss National Bank | 68,700 | $1.15M | 0.00% | 00.0% | Unchanged |
| Algert Global LLC | 72,961 | $1.22M | 0.03% | −4,230−5.5% | Reduced |
| Bank of America Corp | 82,063 | $1.37M | 0.00% | −36,801−31.0% | Reduced |
| Manufacturers Life Insurance Company, The | 86,071 | $1.44M | 0.00% | +3,163+3.8% | Added |
| Barclays PLC | 95,222 | $1.59M | 0.00% | +49,916+110.2% | Added |
| Jane Street Group, LLC | 95,444 | $1.60M | 0.00% | −26,021−21.4% | Reduced |
| DCF Advisers, LLC | 107,500 | $1.80M | 0.93% | 00.0% | Unchanged |
| PDT Partners, LLC | 110,654 | $1.85M | 0.16% | +7,946+7.7% | Added |
| Millennium Management LLC | 112,538 | $1.88M | 0.00% | +81,246+259.6% | Added |
| TD Asset Management Inc | 100,694 | $2.02M | 0.00% | 00.0% | Unchanged |
| AXA S.A. | 120,755 | $2.02M | 0.01% | +360.0% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 122,492 | $2.05M | 0.01% | +9,666+8.6% | Added |
| Bank of New York Mellon Corp | 130,786 | $2.19M | 0.00% | −34,637−20.9% | Reduced |
| Deep Track Capital, LP | 140,000 | $2.34M | 0.07% | +140,000 | New |
| Nuveen Asset Management, LLC | 151,726 | $2.54M | 0.00% | −627−0.4% | Reduced |
| Renaissance Technologies LLC | 182,800 | $3.06M | 0.00% | −146,700−44.5% | Reduced |
| JPMorgan Chase & Co | 199,986 | $3.35M | 0.00% | −95,979−32.4% | Reduced |
| Birchview Capital, LP | 209,574 | $3.51M | 3.04% | +6,000+2.9% | Added |
| Citadel Advisors LLC | 237,683 | $3.98M | 0.00% | −115,470−32.7% | Reduced |
| Pinnacle Associates Ltd | 125,747 | $4.57M | 0.08% | +2,847+2.3% | Added |
| Granahan Investment Management Inc | 312,520 | $5.23M | 0.21% | −23,140−6.9% | Reduced |
| Mariner, LLC | 323,213 | $5.41M | 0.01% | +125,178+63.2% | Added |
| Charles Schwab Investment Management Inc | 324,962 | $5.44M | 0.00% | −2,177−0.7% | Reduced |
| Northern Trust Corp | 372,655 | $6.23M | 0.00% | +8,549+2.3% | Added |
| Federated Hermes, Inc. | 404,903 | $6.77M | 0.01% | +361,042+823.2% | Added |
| Goldman Sachs Group Inc | 415,289 | $6.95M | 0.00% | +65,159+18.6% | Added |
| Finepoint Capital LP | 433,471 | $7.25M | 0.88% | 00.0% | Unchanged |
| Prosight Management, LP | 483,467 | $8.09M | 2.05% | +196,541+68.5% | Added |
| UBS Asset Management Americas Inc | 526,748 | $8.81M | 0.00% | +483,673+1,122.9% | Added |
| Rock Springs Capital Management LP | 625,048 | $10.5M | 0.34% | 00.0% | Unchanged |
| Boxer Capital, LLC | 690,000 | $11.5M | 0.57% | 00.0% | Unchanged |
| Morgan Stanley | 719,287 | $12.0M | 0.00% | −91,416−11.3% | Reduced |
| Dimensional Fund Advisors LP | 854,050 | $14.3M | 0.00% | −7,534−0.9% | Reduced |
| Geode Capital Management, LLC | 963,479 | $16.1M | 0.00% | −30,799−3.1% | Reduced |
| Siren, L.L.C. | 1,099,840 | $18.4M | 0.92% | +1,099,840 | New |
| Vanguard Group Inc | 1,259,101 | $21.1M | 0.00% | +87,354+7.5% | Added |
| Armistice Capital, LLC | 1,650,000 | $27.6M | 0.72% | +90,000+5.8% | Added |
| State Street Corp | 1,674,909 | $28.0M | 0.00% | −257,563−13.3% | Reduced |
| Palo Alto Investors LP | 1,737,964 | $29.1M | 3.78% | +71,586+4.3% | Added |
| Price T Rowe Associates Inc | 3,822,434 | $64.0M | 0.01% | −414,970−9.8% | Reduced |
| BlackRock, Inc. | 4,028,387 | $67.4M | 0.00% | +4,028,387 | New |
| Wellington Management Group LLP | 4,178,788 | $69.9M | 0.01% | +539,359+14.8% | Added |
| FMR LLC | 8,066,983 | $135.0M | 0.01% | +1,3060.0% | Added |
| EcoR1 Capital, LLC | 11,584,280 | $193.8M | 6.64% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 0 | $0 | 0.00% | −29−100.0% | Sold out |
| Artal Group S.A. | 0 | $0 | 0.00% | −1,001,360−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −47,107−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −46,098−100.0% | Sold out |
| Guggenheim Capital LLC | 0 | $0 | 0.00% | −43,248−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −21,351−100.0% | Sold out |
| Focused Wealth Management, Inc | 0 | $0 | 0.00% | −20,129−100.0% | Sold out |
| HighTower Advisors, LLC | 0 | $0 | 0.00% | −18,717−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −18,591−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −15,757−100.0% | Sold out |
| NEOS Investment Management LLC | 0 | $0 | 0.00% | −10,511−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −5,988−100.0% | Sold out |
| Pacer Advisors, Inc. | 0 | $0 | 0.00% | −552−100.0% | Sold out |
| Clear Street Markets LLC | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Kelly Financial Services LLC | 0 | $0 | 0.00% | −182−100.0% | Sold out |
| Mather Group, LLC. | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Global Retirement Partners, LLC | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Register Financial Advisors LLC | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Cypress Capital, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| BlackRock Inc. | – | – | – | – | Not filed |