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 2023
Institutional positions in American Shared Hospital Services as of Jun 30, 2023. 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
- 18
- −2 vs. Q1 2023
- Shares held
- 1.09M
- −4.61K (−0.4%) vs. Q1 2023
- Total value
- $2.79M
- −$291.5K (−9.4%) vs. Q1 2023
- New holders
- 0
- 5 more added
- Sold out
- 2
- 3 more reduced
Compare with Q1 2023: 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 2023
Shares, value and share of portfolio for each institution holding American Shared Hospital Services; share changes are against Q1 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Bridgeway Capital Management, LLC | 259,635 | $663.5K | 0.02% | +248+0.1% | Added |
| Dimensional Fund Advisors LP | 166,056 | $424.3K | 0.00% | 00.0% | Unchanged |
| CI Private Wealth, LLC | 160,559 | $410.3K | 0.00% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 140,864 | $358.0K | 0.00% | −8,575−5.7% | Reduced |
| Vanguard Group Inc | 99,846 | $255.1K | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 74,795 | $191.0K | 0.00% | +29,595+65.5% | Added |
| Financial Counselors Inc | 37,123 | $95.0K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 33,223 | $84.9K | 0.00% | +19,381+140.0% | Added |
| GWM Advisors LLC | 30,334 | $77.5K | 0.00% | −42,881−58.6% | Reduced |
| Canton Hathaway, LLC | 30,000 | $77.0K | 0.02% | 00.0% | Unchanged |
| James Investment Research Inc | 29,725 | $76.0K | 0.01% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 11,100 | $28.4K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 10,723 | $27.4K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 5,906 | $15.1K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 3,622 | $9.25K | 0.00% | +320+9.7% | Added |
| UBS Group AG | 466 | $1.19K | 0.00% | −1,524−76.6% | Reduced |
| Bank of America Corp | 297 | $759 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 27 | $69 | 0.00% | +1+3.8% | Added |
| Steward Financial Group LLC | 0 | $0 | 0.00% | −1,165−100.0% | Sold out |
| Royal Bank of Canada | 0 | $0 | 0.00% | −9−100.0% | Sold out |