American Shared Hospital Services
AMS- Exchange
- NYSE
- Industry
- Services-Medical Laboratories
- SEC CIK
- 0000744825
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.
13F holders, Q2 2021
Institutional positions in American Shared Hospital Services as of Jun 30, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 16
- −2 vs. Q1 2021
- Shares held
- 854.2K
- +182.9K (+27.2%) vs. Q1 2021
- Total value
- $2.50M
- +$642.1K (+34.5%) vs. Q1 2021
- New holders
- 2
- 7 more added
- Sold out
- 4
- 3 more reduced
Compare with Q1 2021: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting AMS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 19 | $798.6K |
| Q1 2026 | 20 | $1.44M |
| Q4 2025 | 18 | $1.86M |
| Q3 2025 | 23 | $3.47M |
| Q2 2025 | 18 | $2.05M |
| Q1 2025 | 18 | $2.49M |
| Q4 2024 | 17 | $3.39M |
| Q3 2024 | 18 | $3.29M |
| Q2 2024 | 19 | $3.47M |
| Q1 2024 | 19 | $3.12M |
| Q4 2023 | 18 | $2.50M |
| Q3 2023 | 21 | $2.70M |
| Q2 2023 | 18 | $2.79M |
| Q1 2023 | 20 | $3.09M |
| Q4 2022 | 18 | $3.06M |
| Q3 2022 | 16 | $2.20M |
| Q2 2022 | 16 | $1.80M |
| Q1 2022 | 16 | $1.83M |
| Q4 2021 | 18 | $1.91M |
| Q3 2021 | 18 | $2.42M |
| Q2 2021 | 16 | $2.50M |
| Q1 2021 | 18 | $1.86M |
Institutions, Q2 2021
Shares, value and share of portfolio for each institution holding American Shared Hospital Services; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Dimensional Fund Advisors LP | 220,839 | $647.0K | 0.00% | −23,884−9.8% | Reduced |
| Bridgeway Capital Management, LLC | 220,800 | $647.0K | 0.01% | +70,600+47.0% | Added |
| Acadian Asset Management LLC | 149,439 | $437.0K | 0.00% | +104,742+234.3% | Added |
| Vanguard Group Inc | 104,644 | $307.0K | 0.00% | +58,463+126.6% | Added |
| James Investment Research Inc | 31,595 | $93.0K | 0.01% | +9,995+46.3% | Added |
| GWM Advisors LLC | 31,595 | $93.0K | 0.00% | +9,995+46.3% | Added |
| Squarepoint Ops LLC | 31,871 | $93.0K | 0.00% | +31,871 | New |
| Citadel Advisors LLC | 30,398 | $89.0K | 0.00% | +3,178+11.7% | Added |
| Royal Bank of Canada | 11,000 | $32.0K | 0.00% | 00.0% | Unchanged |
| Susquehanna Fundamental Investments, LLC | 10,600 | $31.0K | 0.00% | +10,600 | New |
| Morgan Stanley | 5,906 | $17.0K | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 4,000 | $11.7K | 0.00% | −2,000−33.3% | Reduced |
| BlackRock Inc. | 709 | $2.00K | 0.00% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 500 | $1.00K | 0.00% | −87−14.8% | Reduced |
| Bank of America Corp | 319 | $1.00K | 0.00% | +6+1.9% | Added |
| Wells Fargo & Company | 24 | $0 | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −49,300−100.0% | Sold out |
| Canton Hathaway, LLC | 0 | $0 | 0.00% | −40,100−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −897−100.0% | Sold out |
| Wealthcare Capital Management LLC | 0 | $0 | 0.00% | −268−100.0% | Sold out |