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AMS AMERICAN SHARED HOSPITAL SVC

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COM (common), issuer CIK 744825

20 managers (21 13F filers) reported a position in AMS shares at 2026-03-31, 992,073 shares in all. 4 filers opened a position and 2 filers sold out during the quarter.

Managers
20
13F filers
21
New
4
Added
3
Reduced
6
Sold out
2
Shares held by filers
992,073

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP205,120$297K<0.01%-1,29413F-HRTimelineGroup
VANGUARD GROUP INCgroup of 2 filers holding181,143$263KnewTimeline
Corient Private Wealth LPin group Corient Private Wealth LP160,559$233K<0.01%013F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC90,820$132K<0.01%-3,30013F-HRTimeline
LPL Financial LLC76,366$111K<0.01%new13F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC49,200$71.3K<0.01%-20013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…42,314$61.4K<0.01%+14,94313F-HRTimelineGroup
DRW Securities, LLC32,889$47.7K<0.01%-17,59213F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC32,588$47.3K<0.01%-7713F-HRTimelineGroup
JAMES INVESTMENT RESEARCH, INC.29,725$43.1K<0.01%013F-HRTimeline
NewEdge Advisors, LLC29,725$43.1K<0.01%013F-HR/ATimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC28,558$41.4K<0.01%new13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP12,101$17.5K<0.01%013F-HRTimelineGroup
Empowered Funds, LLC11,924$17.3K<0.01%new13F-HR/ATimeline
MORGAN STANLEYin group MORGAN STANLEY5,858$8.49K<0.01%-45013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,814$4.08K<0.01%+87613F-HRTimelineGroup
UBS Group AGin group UBS Group AG200$290<0.01%new13F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP100$181<0.01%013F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA69$00%+813F-HRTimelineGroupValue filed as zero, left out of ratios.
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN0$00%013F-HR/ATimelineGroupValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.