Amarin Corp Plcuk (AMRN) Institutional Ownership

Ownership Summary

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

• These investors held 1.1% of outstanding shares in December 2025, up from 1.0% in September 2025.
• They increased total shares held in Amarin Corp Plcuk by 15.69% from the prior quarter, while the number of investors in AMRN decreased 49.69% year over year.
• Of these 80 holders, 33 added to their stakes in Amarin Corp Plcuk, 19 trimmed positions, and 28 made no changes.
• In total, institutional investors held 4.54Mn shares in Amarin Corp Plcuk as of December 2025, up by 615.05K shares quarter on quarter, and down 72.7Mn shares year over year.
• As of December 31, 2025, the biggest holder of Amarin Corp Plcuk is Sarissa Capital Management LP at 1.67Mn shares, representing 0.4% of shares outstanding.
• Leading buyers of Amarin Corp Plcuk shares for the quarter ending December 2025 were Point72 Asset Management, L.P. (204.27K), MILLENNIUM MANAGEMENT LLC (134.3K), Kynam Capital Management, LP (83.11K), Waterfront Wealth Inc. (60.8K), ACADIAN ASSET MANAGEMENT LLC (56.33K).
• Top sellers of AMRN stock for the quarter ending December 2025 included CITADEL ADVISORS LLC (87.43K), Morgan Stanley (36.94K), BNP PARIBAS FINANCIAL MARKETS (28.84K), Eversept Partners, LP (24.47K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (24.18K).
• Amarin Corp Plcuk's 10 largest shareholders as of December 2025 include Sarissa Capital Management LP (1.67Mn), ACADIAN ASSET MANAGEMENT LLC (636.77K), Kynam Capital Management, LP (472.38K), MILLENNIUM MANAGEMENT LLC (300.54K), Morgan Stanley (293.17K), Point72 Asset Management, L.P. (240.76K), Waterfront Wealth Inc. (203.34K), Eversept Partners, LP (147.72K), TWO SIGMA INVESTMENTS, LP (107.54K), CITADEL ADVISORS LLC (80.58K) per Business Quant data.