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Who owns American Shared Hospital Services (AMS) stock

19 funds reported American Shared Hospital Services (AMS) shares in their latest 13F filings, worth $1.2M in all. The largest holder is Vanguard Group ($382K). Last quarter 6 funds added to their stakes and 10 cut them.

Largest holders of AMS (13F)Largest holders of AMS (13F)Vanguard Group$382KDimensional Fund Advisors LP$161KLPL Financial LLC$129KRenaissance Technologies LLC$91KVanguard Capital Management LLC$88KNewEdge Advisors, LLC$47KBridgeway Capital Management, LLC$46KJames Investment Research$42KGeode Capital Management, LLC$42KVanguard Fiduciary Trust$40K

Largest holders (13F)

FundSharesValueChangeQuarter
Vanguard Group181,143$382Kunchanged2025-12-31
Dimensional Fund Advisors LP102,140$161Kdecrease2026-06-30
LPL Financial LLC81,386$129Kincrease2026-06-30
Renaissance Technologies LLC57,695$91Kincrease2026-06-30
Vanguard Capital Management LLC55,662$88Kdecrease2026-06-30
NewEdge Advisors, LLC29,725$47Kunchanged2026-06-30
Bridgeway Capital Management, LLC29,124$46Kdecrease2026-06-30
James Investment Research29,725$42Kunchanged2026-09-30
Geode Capital Management, LLC26,497$42Kdecrease2026-06-30
Vanguard Fiduciary Trust25,363$40Kdecrease2026-06-30
XTX Topco19,107$30Knew2026-06-30
UBS Group AG18,395$29Kincrease2026-06-30
State Street12,101$19Kunchanged2026-06-30
Morgan Stanley5,858$9Kunchanged2026-06-30
Citigroup454$1Knew2026-06-30

American Shared Hospital Services' latest quarter

American Shared Hospital Services, Q2 2026: revenue $8.4M (+19% year over year), operating margin -10.8%, net loss $998K, operating cash flow $2.2M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most AMS stock?

By the latest 13F filings: Vanguard Group ($382K); Dimensional Fund Advisors LP ($161K); LPL Financial LLC ($129K); Renaissance Technologies LLC ($91K); Vanguard Capital Management LLC ($88K).

What is the short interest in AMS?

6,101 shares were sold short at the 2026-10-15 settlement, -26.41% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.