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, 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 |
|---|---|---|---|---|---|
| EcoR1 Capital, LLC | 11,584,280 | $193.8M | 6.64% | 00.0% | Unchanged |
| FMR LLC | 8,066,983 | $135.0M | 0.01% | +1,3060.0% | Added |
| Wellington Management Group LLP | 4,178,788 | $69.9M | 0.01% | +539,359+14.8% | Added |
| BlackRock, Inc. | 4,028,387 | $67.4M | 0.00% | +4,028,387 | New |
| Price T Rowe Associates Inc | 3,822,434 | $64.0M | 0.01% | −414,970−9.8% | Reduced |
| Palo Alto Investors LP | 1,737,964 | $29.1M | 3.78% | +71,586+4.3% | Added |
| State Street Corp | 1,674,909 | $28.0M | 0.00% | −257,563−13.3% | Reduced |
| Armistice Capital, LLC | 1,650,000 | $27.6M | 0.72% | +90,000+5.8% | Added |
| Vanguard Group Inc | 1,259,101 | $21.1M | 0.00% | +87,354+7.5% | Added |
| Siren, L.L.C. | 1,099,840 | $18.4M | 0.92% | +1,099,840 | New |
| Geode Capital Management, LLC | 963,479 | $16.1M | 0.00% | −30,799−3.1% | Reduced |
| Dimensional Fund Advisors LP | 854,050 | $14.3M | 0.00% | −7,534−0.9% | Reduced |
| Morgan Stanley | 719,287 | $12.0M | 0.00% | −91,416−11.3% | Reduced |
| Boxer Capital, LLC | 690,000 | $11.5M | 0.57% | 00.0% | Unchanged |
| Rock Springs Capital Management LP | 625,048 | $10.5M | 0.34% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 526,748 | $8.81M | 0.00% | +483,673+1,122.9% | Added |
| Prosight Management, LP | 483,467 | $8.09M | 2.05% | +196,541+68.5% | Added |
| Finepoint Capital LP | 433,471 | $7.25M | 0.88% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 415,289 | $6.95M | 0.00% | +65,159+18.6% | Added |
| Federated Hermes, Inc. | 404,903 | $6.77M | 0.01% | +361,042+823.2% | Added |
| Northern Trust Corp | 372,655 | $6.23M | 0.00% | +8,549+2.3% | Added |
| Charles Schwab Investment Management Inc | 324,962 | $5.44M | 0.00% | −2,177−0.7% | Reduced |
| Mariner, LLC | 323,213 | $5.41M | 0.01% | +125,178+63.2% | Added |
| Granahan Investment Management Inc | 312,520 | $5.23M | 0.21% | −23,140−6.9% | Reduced |
| Pinnacle Associates Ltd | 125,747 | $4.57M | 0.08% | +2,847+2.3% | Added |
| Citadel Advisors LLC | 237,683 | $3.98M | 0.00% | −115,470−32.7% | Reduced |
| Birchview Capital, LP | 209,574 | $3.51M | 3.04% | +6,000+2.9% | Added |
| JPMorgan Chase & Co | 199,986 | $3.35M | 0.00% | −95,979−32.4% | Reduced |
| Renaissance Technologies LLC | 182,800 | $3.06M | 0.00% | −146,700−44.5% | Reduced |
| Nuveen Asset Management, LLC | 151,726 | $2.54M | 0.00% | −627−0.4% | Reduced |
| Deep Track Capital, LP | 140,000 | $2.34M | 0.07% | +140,000 | New |
| Bank of New York Mellon Corp | 130,786 | $2.19M | 0.00% | −34,637−20.9% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 122,492 | $2.05M | 0.01% | +9,666+8.6% | Added |
| AXA S.A. | 120,755 | $2.02M | 0.01% | +360.0% | Added |
| TD Asset Management Inc | 100,694 | $2.02M | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 112,538 | $1.88M | 0.00% | +81,246+259.6% | Added |
| PDT Partners, LLC | 110,654 | $1.85M | 0.16% | +7,946+7.7% | Added |
| DCF Advisers, LLC | 107,500 | $1.80M | 0.93% | 00.0% | Unchanged |
| Jane Street Group, LLC | 95,444 | $1.60M | 0.00% | −26,021−21.4% | Reduced |
| Barclays PLC | 95,222 | $1.59M | 0.00% | +49,916+110.2% | Added |
| Manufacturers Life Insurance Company, The | 86,071 | $1.44M | 0.00% | +3,163+3.8% | Added |
| Bank of America Corp | 82,063 | $1.37M | 0.00% | −36,801−31.0% | Reduced |
| Algert Global LLC | 72,961 | $1.22M | 0.03% | −4,230−5.5% | Reduced |
| Swiss National Bank | 68,700 | $1.15M | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 66,199 | $1.11M | 0.00% | +5,488+9.0% | Added |
| Rhumbline Advisers | 65,940 | $1.10M | 0.00% | −3,816−5.5% | Reduced |
| UBS Group AG | 62,506 | $1.05M | 0.00% | +17,738+39.6% | Added |
| Schonfeld Strategic Advisors LLC | 62,272 | $1.04M | 0.01% | +62,272 | New |
| Rafferty Asset Management, LLC | 62,230 | $1.04M | 0.00% | −34,789−35.9% | Reduced |
| Norges Bank | 57,454 | $961.2K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 55,842 | $934.2K | 0.00% | +17,230+44.6% | Added |
| Duncan Williams Asset Management, LLC | 48,749 | $815.6K | 0.45% | +48,749 | New |
| Thrivent Financial for Lutherans | 47,515 | $795.0K | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 47,433 | $793.6K | 0.00% | +13,643+40.4% | Added |
| Alliancebernstein L.P. | 46,746 | $782.1K | 0.00% | 00.0% | Unchanged |
| RBF Capital, LLC | 45,362 | $758.9K | 0.04% | 00.0% | Unchanged |
| Capula Management Ltd | 43,197 | $722.7K | 0.01% | +43,197 | New |
| Lazard Asset Management LLC | 42,173 | $705.0K | 0.00% | +42,173 | New |
| HRT Financial LP | 41,809 | $699.0K | 0.00% | +18,387+78.5% | Added |
| Alps Advisors Inc | 41,627 | $696.4K | 0.00% | −308−0.7% | Reduced |
| Invesco Ltd. | 41,214 | $689.5K | 0.00% | +111+0.3% | Added |
| Man Group plc | 40,606 | $679.3K | 0.00% | +77+0.2% | Added |
| Legal & General Group Plc | 40,224 | $672.9K | 0.00% | +1,450+3.7% | Added |
| Primecap Management Co | 35,500 | $593.9K | 0.00% | −1,000−2.7% | Reduced |
| California State Teachers Retirement System | 33,562 | $561.5K | 0.00% | −1,206−3.5% | Reduced |
| Deutsche Bank AG | 32,458 | $543.0K | 0.00% | +4,904+17.8% | Added |
| Jump Financial, LLC | 32,407 | $542.2K | 0.01% | −10,393−24.3% | Reduced |
| Citigroup Inc | 32,074 | $536.6K | 0.00% | +7,410+30.0% | Added |
| Gsa Capital Partners LLP | 28,941 | $484.0K | 0.04% | +28,941 | New |
| Sherbrooke Park Advisers LLC | 27,582 | $461.4K | 0.11% | +27,582 | New |
| Tudor Investment Corp Et Al | 27,531 | $460.6K | 0.01% | +736+2.7% | Added |
| State of Wisconsin Investment Board | 27,401 | $458.4K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 25,718 | $438.4K | 0.00% | +914+3.7% | Added |
| Dynamic Technology Lab Private Ltd | 25,764 | $432.0K | 0.05% | +25,764 | New |
| MetLife Investment Management | 25,337 | $423.9K | 0.00% | 00.0% | Unchanged |
| Cresset Asset Management, LLC | 24,425 | $408.6K | 0.00% | −3,873−13.7% | Reduced |
| Edgewood Management LLC | 24,060 | $402.5K | 0.00% | 00.0% | Unchanged |
| Corebridge Financial, Inc. | 22,736 | $380.4K | 0.00% | −140−0.6% | Reduced |
| Ensign Peak Advisors, Inc | 21,643 | $362.1K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 20,907 | $349.8K | 0.00% | +20,907 | New |
| Brevan Howard Capital Management LP | 20,573 | $344.2K | 0.02% | −1,248−5.7% | Reduced |
| American Century Companies Inc | 18,302 | $306.2K | 0.00% | +18,302 | New |
| Janus Henderson Group PLC | 18,047 | $301.3K | 0.00% | −1,008,511−98.2% | Reduced |
| Schroder Investment Management Group | 15,000 | $300.8K | 0.00% | 00.0% | Unchanged |
| Brinker Capital Investments, LLC | 17,531 | $293.3K | 0.00% | +739+4.4% | Added |
| Orion Portfolio Solutions, LLC | 17,531 | $293.3K | 0.00% | +739+4.4% | Added |
| DekaBank Deutsche Girozentrale | 14,000 | $277.0K | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 16,502 | $276.1K | 0.15% | 00.0% | Unchanged |
| XTX Topco Ltd | 15,564 | $260.4K | 0.02% | +15,564 | New |
| Handelsbanken Fonder AB | 15,400 | $258.0K | 0.00% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 15,386 | $257.4K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 15,078 | $245.0K | 0.00% | +15,078 | New |
| New York State Common Retirement Fund | 14,279 | $238.9K | 0.00% | −4,100−22.3% | Reduced |
| SG Americas Securities, LLC | 14,087 | $236.0K | 0.00% | −40,485−74.2% | Reduced |
| Teachers Retirement System of the State of Kentucky | 14,039 | $235.0K | 0.00% | 00.0% | Unchanged |
| Voya Investment Management LLC | 13,957 | $233.5K | 0.00% | −16,915−54.8% | Reduced |
| Amundi | 13,686 | $228.4K | 0.00% | −2,213−13.9% | Reduced |
| Qube Research & Technologies Ltd | 13,320 | $222.8K | 0.00% | +13,320 | New |
| Profund Advisors LLC | 12,661 | $211.8K | 0.01% | −5,412−29.9% | Reduced |
| Intech Investment Management LLC | 12,555 | $210.0K | 0.00% | +12,555 | New |