Merus N.V. (MRUS) Institutional Ownership

Ownership Summary

Merus N.V. (NASDAQ:MRUS) currently has 261 active institutional owners and shareholders as of today (September 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• The collective stake of institutional investors in Merus N.V moved to 93.0% in September 2025, a shift down from the 108.0% reported for June 2025.
• Quarterly data indicates a 3.37% shift in institutional share volume, and the annual owner count reflects an increase of 40.32%.
• Of these 261 institutional investors, 158 increased their holdings in Merus N.V, while 82 of them reduced positions, and 21 investors maintained their exposure.
• The aggregate institutional position in Merus N.V now stands at 70.32Mn shares as of September 2025, after investors increased their holdings (up by 2.29Mn shares quarter on quarter which is up 1.61Mn shares year over year).
• Paradigm Biocapital Advisors LP continues to be the largest institutional holder of Merus N.V as of September 30, 2025, with a position of 4.37Mn shares, representing 5.78% of the company's outstanding stock.
• Among the most significant buyers of Merus N.V during September 2025 were HBK INVESTMENTS L P (2.85Mn), GLAZER CAPITAL, LLC (1.62Mn), GOLDMAN SACHS GROUP INC (1.43Mn), BlackRock, Inc. (1.12Mn), KRYGER CAPITAL Ltd (1.05Mn).
• Leading sellers of Merus N.V stock in September 2025 included FMR LLC (4.68Mn), WELLINGTON MANAGEMENT GROUP LLP (3.27Mn), Holocene Advisors, LP (2.06Mn), RTW INVESTMENTS, LP (1.98Mn), FRANKLIN RESOURCES INC (1.34Mn).
• The top 10 institutional holders of Merus N.V for the quarter ending September 2025 included Paradigm Biocapital Advisors LP (4.37Mn), Avoro Capital Advisors LLC (3.54Mn), Commodore Capital LP (3.52Mn), DEERFIELD MANAGEMENT COMPANY, L.P. (3.05Mn), HBK INVESTMENTS L P (2.85Mn), FMR LLC (2.81Mn), BlackRock, Inc. (2.17Mn), WESTFIELD CAPITAL MANAGEMENT CO LP (2.13Mn), RTW INVESTMENTS, LP (2.03Mn), Woodline Partners LP (1.67Mn).