AMERICAN SHARED HOSPITAL SERVICES - Common Stock, no par value (AMS) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q3 2025

Type / Class
Equity / Common Stock, no par value
Symbol
AMS on NYSE
Shares outstanding
6,585,388
Price per share
$2.14
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
829,997
Total reported value
$2,323,695
% of total 13F portfolios
0%
Share change
-21,960
Value change
-$59,678
Number of holders
20
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of AMERICAN SHARED HOSPITAL SERVICES - Common Stock, no par value (AMS) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Stachowiak Raymond C 24% +3.9% $3,558,480 +$189,240 1,560,737 +5.6% Stachowiak Raymond C 01 Oct 2025
Zucker Anita G 9.1% +15% $1,554,140 +$207,630 586,468 +15% Anita G. Zucker 08 May 2025

As of 30 Sep 2025, 20 institutional investors reported holding 829,997 shares of AMERICAN SHARED HOSPITAL SERVICES - Common Stock, no par value (AMS). This represents 13% of the company’s total 6,585,388 outstanding shares.

Top 22 Institutional Shareholders

The largest institutional shareholders of AMERICAN SHARED HOSPITAL SERVICES - Common Stock, no par value (AMS) together control 13% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
DIMENSIONAL FUND ADVISORS LP 3.2% 209,959 0% 0% $587,885
VANGUARD GROUP INC 2.8% 181,143 -0.06% 0% $507,201
Corient Private Wealth LLC 2.4% 160,559 0% 0% $449,565
BRIDGEWAY CAPITAL MANAGEMENT, LLC 1.5% 96,691 0% 0.01% $270,735
RENAISSANCE TECHNOLOGIES LLC 0.76% 49,800 -25% 0% $139,440
GEODE CAPITAL MANAGEMENT, LLC 0.5% 32,665 -1.3% 0% $91,503
NewEdge Advisors, LLC 0.45% 29,725 0% 0% $83,230
JAMES INVESTMENT RESEARCH, INC. 0.45% 29,725 0% 0.01% $83,230
STATE STREET CORP 0.18% 12,101 0% 0% $33,883
Empowered Funds, LLC 0.18% 11,924 0% 0% $33,387
MORGAN STANLEY 0.1% 6,810 +7.1% 0% $19,068
ACADIAN ASSET MANAGEMENT LLC 0.09% 6,196 -16% 0% $17,000
Tower Research Capital LLC (TRC) 0.03% 1,655 -0.42% 0% $4,634
Farther Finance Advisors, LLC 0.01% 502 0% $1,406
OSAIC HOLDINGS, INC. 0% 300 0% 0% $840
JONES FINANCIAL COMPANIES LLLP 0% 100 0% $290
BANK OF AMERICA CORP /DE/ 0% 65 -9.7% 0% $182
UBS Group AG 0% 50 0% $140
BARCLAYS PLC 0% 20 0% $56
JPMORGAN CHASE & CO 0% 7 0% 0% $20
RAYMOND JAMES FINANCIAL INC 0% 0 -100% $0
WELLS FARGO & COMPANY/MN 0% 0 -100% $0

Institutional Holders of AMERICAN SHARED HOSPITAL SERVICES - Common Stock, no par value (AMS) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q3 829,997 $2,323,695 -$59,678 $2.80 20
2025 Q2 851,957 $2,052,429 -$117,210 $2.41 18
2025 Q1 895,265 $2,488,840 -$461,819 $2.78 18
2024 Q4 1,061,391 $3,385,797 -$53,407 $3.19 17
2024 Q3 1,078,673 $3,289,131 -$27,332 $3.05 18
2024 Q2 1,087,419 $3,472,254 +$93,743 $3.20 19
2024 Q1 1,058,385 $3,121,613 +$48,925 $2.95 19
2023 Q4 1,048,628 $2,503,025 -$107,559 $2.38 18
2023 Q3 1,092,517 $2,696,048 -$4,173 $2.47 20
2023 Q2 1,094,301 $2,794,752 -$11,713 $2.56 18
2023 Q1 1,098,901 $3,086,282 +$126,852 $2.81 19
2022 Q4 1,050,557 $3,061,300 +$61,938 $2.93 18
2022 Q3 1,006 $3,000 $0 $3.09 2
2022 Q2 1,006 $3,000 $0 $3.09 2
2022 Q1 1,006 $3,000 $0 $3.09 2
2021 Q4 1,006 $3,000 -$120,999 $3.09 2
2021 Q3 874,621 $2,412,000 +$60,860 $2.76 16
2021 Q2 849,693 $2,489,000 +$555,866 $2.93 13
2021 Q1 665,285 $1,843,000 +$17,000 $2.77 16
2020 Q4 1,006 $3,000 $0 $3.09 2
2020 Q3 297 $1,000 $0 $3.37 1
2020 Q2 1,006 $3,000 -$273,995 $3.09 2
2020 Q1 672,624 $1,042,000 -$89,926 $1.55 14
2019 Q4 1,006 $3,000 -$2,000 $3.09 2
2019 Q3 14,909 $39,000 +$4,814 $2.82 5
2019 Q2 636,731 $1,826,000 +$375,591 $2.87 15
2019 Q1 666,694 $1,853,000 +$51,488 $2.78 17
2018 Q4 1,306 $4,000 -$3,000 $3.33 3
2018 Q3 484,322 $1,694,000 -$26,576 $3.49 15
2018 Q2 496,333 $1,364,000 -$383,714 $2.75 13
2018 Q1 648,671 $1,652,000 -$34,029 $2.55 14
2017 Q4 0 $0 -$1,000 $2.14 0
2017 Q3 244 $1,000 -$307,996 $4.10 1
2017 Q2 613,622 $2,405,000 +$99,569 $3.92 17
2017 Q1 580,921 $2,522,000 +$593,831 $4.34 17
2016 Q4 444,834 $1,489,000 +$17,473 $3.35 13
2016 Q3 440,239 $1,365,000 +$35,416 $3.10 14
2016 Q2 297 $1,000 $0 $3.37 1
2016 Q1 297 $1,000 $0 $3.37 1
2015 Q4 297 $1,000 $0 $3.37 1
2015 Q3 297 $1,000 $0 $3.37 1
2015 Q2 297 $1,000 $0 $3.37 1
2015 Q1 297 $1,000 $0 $3.37 1
2014 Q4 381,239 $1,076,000 -$551 $2.82 12
2014 Q3 382,508 $844,000 -$21,000 $2.20 11
2014 Q2 390,233 $1,015,000 +$17,925 $2.60 10
2014 Q1 383,494 $1,230,000 -$31,190 $3.20 8