AMRN Amarin Corporation plc
Amarin Corporation plc (AMRN) Institutional Ownership
What the institutions did with AMRN last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| Sarissa Capital Management LP | 1.7M | 36.2% |
| ACADIAN ASSET MANAGEMENT LLC | 721.0K | 15.6% |
| Kynam Capital Management, LP | 533.0K | 11.5% |
| MORGAN STANLEY | 223.6K | 4.8% |
| Waterfront Wealth Inc. | 213.9K | 4.6% |
| Brooklands Fund Management Ltd | 177.3K | 3.8% |
| Eversept Partners, LP | 145.3K | 3.1% |
| MILLENNIUM MANAGEMENT LLC | 115.8K | 2.5% |
| TWO SIGMA INVESTMENTS, LP | 100.5K | 2.2% |
| CITADEL ADVISORS LLC | 95.4K | 2.1% |
| BNP PARIBAS FINANCIAL MARKETS | 71.8K | 1.6% |
| LCM Capital Management Inc | 51.4K | 1.1% |
| RENAISSANCE TECHNOLOGIES LLC | 48.4K | 1.0% |
| JANE STREET GROUP, LLC | 37.6K | 0.8% |
| George Kaiser Family Foundation | 37.2K | 0.8% |
| SEI INVESTMENTS CO | 29.2K | 0.6% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 29.0K | 0.6% |
| STATE STREET CORP | 25.0K | 0.5% |
| Bleakley Financial Group, LLC | 23.5K | 0.5% |
| AMERIPRISE FINANCIAL INC | 19.0K | 0.4% |
| State of New Jersey Common Pension Fund D | 18.9K | 0.4% |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 18.4K | 0.4% |
| RAYMOND JAMES FINANCIAL INC | 18.2K | 0.4% |
| R Squared Ltd | 16.9K | 0.4% |
| State of Tennessee, Department of Treasury | 15.0K | 0.3% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Point72 Asset Management, L.P. | Sold Out | 240.8K | 0 | -240.8K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 300.5K | 115.8K | -184.7K |
| Brooklands Fund Management Ltd | Increased | 15.6K | 177.3K | +161.7K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 636.8K | 721.0K | +84.2K |
| MORGAN STANLEY | Reduced | 293.2K | 223.6K | -69.6K |
| Kynam Capital Management, LP | Increased | 472.4K | 533.0K | +60.6K |
| JANE STREET GROUP, LLC | New | 0 | 37.6K | +37.6K |
| George Kaiser Family Foundation | New | 0 | 37.2K | +37.2K |
| SEI INVESTMENTS CO | New | 0 | 29.2K | +29.2K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 19.3K | 48.4K | +29.1K |
| R Squared Ltd | New | 0 | 16.9K | +16.9K |
| Quadrature Capital Ltd | New | 0 | 14.8K | +14.8K |
| CITADEL ADVISORS LLC | Increased | 80.6K | 95.4K | +14.8K |
| EntryPoint Capital, LLC | New | 0 | 12.2K | +12.2K |
| Jump Financial, LLC | New | 0 | 12.0K | +12.0K |
| GOLDMAN SACHS GROUP INC | Sold Out | 11.9K | 0 | -11.9K |
| Waterfront Wealth Inc. | Increased | 203.3K | 213.9K | +10.6K |
| Verdad Advisers, LP | New | 0 | 10.4K | +10.4K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 37.7K | 29.0K | -8.7K |
| LCM Capital Management Inc | Increased | 43.5K | 51.4K | +7.9K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 107.5K | 100.5K | -7.0K |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 75.5K | 71.8K | -3.7K |
| UBS Group AG | Reduced | 13.2K | 10.1K | -3.1K |
| WELLS FARGO & COMPANY/MN | Increased | 11.4K | 13.9K | +2.5K |
| Eversept Partners, LP | Reduced | 147.7K | 145.3K | -2.4K |
| OSAIC HOLDINGS, INC. | Increased | 9.4K | 11.6K | +2.2K |
| GAMMA Investing LLC | Increased | 530 | 1.6K | +1.0K |
| RAYMOND JAMES FINANCIAL INC | Reduced | 19.1K | 18.2K | -910 |
| AMERIPRISE FINANCIAL INC | Increased | 18.2K | 19.0K | +766 |
| RHUMBLINE ADVISERS | Increased | 3.3K | 3.7K | +394 |
| EverSource Wealth Advisors, LLC | Sold Out | 376 | 0 | -376 |
| JONES FINANCIAL COMPANIES LLLP | Increased | 154 | 493 | +339 |
| BlackRock, Inc. | Reduced | 1.2K | 858 | -306 |
| BARCLAYS PLC | New | 0 | 305 | +305 |
| TWIN PEAKS WEALTH ADVISORS, LLC | Sold Out | 224 | 0 | -224 |
| GROUP ONE TRADING LLC | Increased | 29 | 130 | +101 |
| ROYAL BANK OF CANADA | Reduced | 2.0K | 1.9K | -76 |
| Larson Financial Group LLC | Sold Out | 74 | 0 | -74 |
| STATE STREET CORP | Increased | 24.9K | 25.0K | +67 |
| RESOURCES MANAGEMENT CORP /CT/ /ADV | Sold Out | 60 | 0 | -60 |
| Bleakley Financial Group, LLC | Reduced | 23.6K | 23.5K | -59 |
| Steward Partners Investment Advisory, LLC | Reduced | 9.0K | 8.9K | -56 |
| Arax Advisory Partners | New | 0 | 43 | +43 |
| MAI Capital Management | Sold Out | 42 | 0 | -42 |
| Darwin Wealth Management, LLC | New | 0 | 25 | +25 |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | Increased | 5.8K | 5.8K | +24 |
| Continuum Advisory, LLC | New | 0 | 19 | +19 |
| Caitong International Asset Management Co., Ltd | New | 0 | 17 | +17 |
| CITIGROUP INC | New | 0 | 8 | +8 |
| BFSG, LLC | New | 0 | 5 | +5 |
| Oakmont Advisory Group, LLC | New | 0 | 5 | +5 |
| WHITTIER TRUST CO | New | 0 | 4 | +4 |
| Farther Finance Advisors, LLC | Reduced | 962 | 958 | -4 |
| WHITTIER TRUST CO OF NEVADA INC | New | 0 | 1 | +1 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.