Lantheus Holdings, Inc. (LNTH) Institutional Ownership

Ownership Summary

Lantheus Holdings, Inc. (NASDAQ:LNTH) is held by 382 institutional investors per 13F filings through December 2025.

• Collectively, these holders controlled 111.3% of Lantheus Holdings's outstanding shares in December 2025, down from 113.0% in September 2025.
• They increased total shares held in Lantheus Holdings by 4.66% from the prior quarter, while the number of investors in LNTH decreased 20.42% year over year.
• During the quarter, 176 of these 382 funds increased positions in LNTH, 156 reduced exposure, and 50 held steady.
• In total, institutional investors held 75.32Mn shares in Lantheus Holdings as of December 2025, up by 3.35Mn shares quarter on quarter, and down 3.44Mn shares year over year.
• Janus Henderson Group Plc is the top holder of Lantheus Holdings as of December 31, 2025, with 9.55Mn shares representing 14.11% of outstanding stock.
• The largest buyers of Lantheus Holdings for the quarter ending December 2025 were Janus Henderson Group Plc (3.84Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (3.17Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.91Mn), AMERICAN CENTURY COMPANIES INC (1.01Mn), PRICE T ROWE ASSOCIATES INC /MD/ (919.73K).
• Leading sellers of Lantheus Holdings shares for the quarter ending December 2025 were M&T Bank Corp (5.52Mn), Swedbank AB (1.23Mn), CITADEL ADVISORS LLC (359.65K), Bank Of America Corp /De/ (288.16K), AQR CAPITAL MANAGEMENT LLC (288.05K).
• Lantheus Holdings's 10 largest shareholders as of December 2025 include Janus Henderson Group Plc (9.55Mn), BlackRock, Inc. (8.18Mn), FARALLON CAPITAL MANAGEMENT, L.L.C. (5.58Mn), FMR LLC (4.63Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (3.17Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.91Mn), State Street Corp (2.43Mn), AMERICAN CENTURY COMPANIES INC (1.78Mn), GEODE CAPITAL MANAGEMENT, LLC (1.77Mn), Morgan Stanley (1.65Mn) per Business Quant data.