Alumis Inc. (ALMS) Institutional Ownership

Ownership Summary

Alumis Inc. (NASDAQ:ALMS) currently has 24 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• The collective stake of institutional investors in Alumis moved to 5.5% in December 2025, a shift down from the 75.8% reported for September 2025.
• In percentage terms, this reflects as a holdings change of -32.81% quarter on quarter, and a decrease of 63.08% year over year.
• A review of institutional activity for Alumis shows 13 of 24 filers increasing their positions, while 7 reduced their stake, and 4 remained unchanged.
• The total number of shares held by institutions in Alumis decreased to 5.71Mn as of December 2025, a net change of down by 2.79Mn shares quarter on quarter, and down 34.56Mn shares year over year.
• VANGUARD GROUP INC continues to be the largest institutional holder of Alumis as of December 31, 2025, with a position of 4.10Mn shares, representing 3.93% of the company's outstanding stock.
• Among the most significant buyers of Alumis during December 2025 were VANGUARD GROUP INC (73.67K), Grange Capital, LLC (32.00K), Inscription Capital, LLC (6.23K), SIGNATUREFD, LLC (1.27K), Mirae Asset Global Investments Co., Ltd. (979).
• Leading sellers of Alumis stock in December 2025 included Trium Capital LLP (2.23Mn), UBS Group AG (648.68K), STRS OHIO (23.33K), China Universal Asset Management Co., Ltd. (1.14K), SBI Securities Co., Ltd. (420).
• The top 10 institutional holders of Alumis for the quarter ending December 2025 included VANGUARD GROUP INC (4.10Mn), Trium Capital LLP (893.11K), TOWERVIEW LLC (495.00K), UBS Group AG (114.00K), Grange Capital, LLC (32.00K), Inscription Capital, LLC (26.67K), China Universal Asset Management Co., Ltd. (15.84K), CWM, LLC (10.43K), Mirae Asset Global Investments Co., Ltd. (4.72K), GF FUND MANAGEMENT CO. LTD. (1.91K).