American Shared Hospital Services (AMS) Institutional Ownership

Ownership Summary

American Shared Hospital Services (NYSE:AMS) is held by 19 institutional investors per 13F filings through December 2025.

• These investors collectively held 15.9% of American Shared Hospital Services's outstanding shares in December 2025, up from 12.5% in September 2025.
• Their total shares held in AMS increased 28.16% from the prior quarter, while the number of investors in American Shared Hospital Services increased 18.75% year over year.
• Activity in AMS broke down as 6 buyers, 5 sellers, and 8 unchanged among 19 total holders.
• Altogether, these fund groups held 1.05Mn shares in AMS by December 2025, up by 231.8K shares quarter on quarter, and up 53.9K shares year over year.
• Corient Private Wealth LLC is the top holder of American Shared Hospital Services as of December 31, 2025, with 321.12K shares representing 4.84% of outstanding stock.
• Leading buyers of American Shared Hospital Services shares for the quarter ending December 2025 were Corient Private Wealth LLC (160.56K), DRW Securities, LLC (50.48K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (27.37K), Tower Research Capital LLC (TRC) (283), Citigroup Inc (142).
• The largest sellers of American Shared Hospital Services for the quarter ending December 2025 were DIMENSIONAL FUND ADVISORS LP (3.54K), BRIDGEWAY CAPITAL MANAGEMENT, LLC (2.57K), Morgan Stanley (502), RENAISSANCE TECHNOLOGIES LLC (400), Bank Of America Corp /De/ (70).
• Business Quant data shows the 10 biggest positions in American Shared Hospital Services as of December 2025 are held by Corient Private Wealth LLC (321.12K), DIMENSIONAL FUND ADVISORS LP (206.41K), VANGUARD GROUP INC (181.14K), BRIDGEWAY CAPITAL MANAGEMENT, LLC (94.12K), DRW Securities, LLC (50.48K), RENAISSANCE TECHNOLOGIES LLC (49.4K), GEODE CAPITAL MANAGEMENT, LLC (32.66K), JAMES INVESTMENT RESEARCH, INC. (29.72K), NewEdge Advisors, LLC (29.72K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (27.37K).