Amarin Corp Plc\Uk (AMRN) Institutional Ownership

Ownership Summary

Amarin Corp Plc\Uk (NASDAQ:AMRN) showed up in the 13F filings of 80 institutional investors as of December 2025.

• Collectively, these holders controlled 1.1% of Amarin Corp Plc\Uk's outstanding shares in December 2025, up from 1.0% in September 2025.
• They increased total shares held in Amarin Corp Plc\Uk by 15.69% from the prior quarter, while the number of investors in AMRN decreased 49.69% year over year.
• During the quarter, 33 of these 80 funds increased positions in AMRN, 19 reduced exposure, and 28 held steady.
• Altogether, these fund groups held 4.54Mn shares in AMRN by December 2025, up by 615.05K shares quarter on quarter, and down 72.7Mn shares year over year.
• Sarissa Capital Management LP holds the largest position in AMRN at 1.67Mn shares as of December 31, 2025, or 0.4% of shares outstanding.
• The biggest buyers of Amarin Corp Plc\Uk for the quarter ending December 2025 included Sarissa Capital Management LP (430.87K), ACADIAN ASSET MANAGEMENT LLC (123.86K), Waterfront Wealth Inc. (64.58K), Morgan Stanley (60.45K), TWO SIGMA INVESTMENTS, LP (51.1K).
• The largest sellers of Amarin Corp Plc\Uk for the quarter ending December 2025 were Kynam Capital Management, LP (186.84K), Quinn Opportunity Partners LLC (44.16K), Jpmorgan Chase & Co (24.81K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (18.26K), UBS Group AG (12.05K).
• Per Business Quant, the top 10 investors in AMRN for the quarter ending December 2025 include Sarissa Capital Management LP (1.67Mn), ACADIAN ASSET MANAGEMENT LLC (580.44K), Kynam Capital Management, LP (389.27K), Morgan Stanley (330.11K), Eversept Partners, LP (172.19K), CITADEL ADVISORS LLC (168.0K), MILLENNIUM MANAGEMENT LLC (166.24K), Waterfront Wealth Inc. (142.54K), TWO SIGMA INVESTMENTS, LP (111.17K), BNP PARIBAS FINANCIAL MARKETS (104.34K).