Ticker · CUSIP 029595105

AMS

AMERICAN SHARED HOSPITAL SVC
···Share
Holders (tracked)
1
Combined shares
49,400
Combined value
$104.2K
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
122024Q12025Q4

SEC event timeline

2 events
  1. Renaissance Technologies trimmed2026-02-12
    −400 shares · 2025Q4
    13F
  2. Renaissance Technologies trimmed2025-11-13
    −16,900 shares · 2025Q3
    13F

Insider activity

Last 30 days
Net (open-market)
$0
Buys
0 · $0
Sells
0 · $0
Unique insiders
1
DateInsiderCodeSharesPriceValue
03-26Stachowiak Raymond C
Executive Chairman · Officer, Director, 10%+
A100,000—$0
View full insider history for AMS →

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions0
—
Added to0
—
Trimmed1
Exited0
—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
3
$57K
2022Q2
3
$60K
2022Q3
3
$80
2022Q4
3
$34K
2023Q1
3
$69K
2023Q2
3
$112K
2023Q3
3
$73K
2023Q4
3
$83K
2024Q1
2
$32K
2024Q2
2
$212K
2024Q3
2
$238K
2024Q4
1
$227K
2025Q1
1
$194K
2025Q2
1
$161K
2025Q3
1
$139K
2025Q4
1
$104K

Who owns AMS

1 super-investors · 2025Q4
Tracked stake
49.4K
shares
Combined value
$104K
% of shares outstanding
—
shares-out unknown
Quarter action mix
Trim1
#ManagerSharesValue
1Renaissance Technologies49.4K$104K

Recent moves

20 transactions
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