American Shared Hospital Services

AMS

Exchange: NYSE
Industry: Services-Medical Laboratories
SEC CIK: 0000744825

SEC filings (opens in a new tab)

No open-market purchases or sales by American Shared Hospital Services insiders were filed in the last 90 days; 19 institutions reported holding it in 13F filings for Q2 2026, worth $798.6K in total; no superinvestor holds it.

Q4 2021 vs. Q3 2021

How the institutions holding American Shared Hospital Services changed between Q3 2021 and Q4 2021.

All holders in Q4 2021 All holders in Q3 2021

13F holders of AMS: Q3 2021 compared with Q4 2021
Measure	Q3 2021	Q4 2021	Change
Holders	18	18	0
Shares	878.6K	805.7K	−73.0K (−8.3%)
Value	$2.42M	$1.91M	−$514.6K (−21.2%)

New holders (2)

Institutions that held American Shared Hospital Services at the end of Q4 2021 but not at the end of Q3 2021.

Institutions new to AMS in Q4 2021
Institution	Shares	Value	% of portfolio
UBS Group AG	5,584	$13.0K	0.00%
Captrust Financial Advisors	400	$1.00K	0.00%

Sold out (2)

Institutions that held American Shared Hospital Services at the end of Q3 2021 and filed for Q4 2021 without it.

Institutions that sold out of AMS in Q4 2021
Institution	Shares, Q3 2021	Value, Q3 2021
Virtu Financial LLC	32,955	$91.0K
Royal Bank of Canada	11,000	$30.0K