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, Q4 2023
Institutional positions in American Shared Hospital Services as of Dec 31, 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. Q3 2023
- Shares held
- 1.05M
- −43.9K (−4.0%) vs. Q3 2023
- Total value
- $2.50M
- −$193.0K (−7.2%) vs. Q3 2023
- New holders
- 0
- 8 more added
- Sold out
- 2
- 1 more reduced
1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding American Shared Hospital Services; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Bridgeway Capital Management, LLC | 261,035 | $621.1K | 0.01% | +768+0.3% | Added |
| Dimensional Fund Advisors LP | 166,056 | $395.1K | 0.00% | 00.0% | Unchanged |
| CI Private Wealth, LLC | 160,919 | $382.9K | 0.00% | +360+0.2% | Added |
| Acadian Asset Management LLC | 140,864 | $334.0K | 0.00% | 00.0% | Unchanged |
| Vanguard Group Inc | 117,884 | $280.5K | 0.00% | +16,475+16.2% | Added |
| Financial Counselors Inc | 37,123 | $88.3K | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 35,500 | $84.0K | 0.00% | −24,488−40.8% | Reduced |
| GWM Advisors LLC | 29,725 | $80.3K | 0.00% | 00.0% | Unchanged |
| James Investment Research Inc | 29,725 | $70.7K | 0.01% | 00.0% | Unchanged |
| Citadel Advisors LLC | 24,072 | $57.3K | 0.00% | +5,391+28.9% | Added |
| Geode Capital Management, LLC | 17,916 | $42.7K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 10,723 | $25.5K | 0.00% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 10,200 | $24.3K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 5,906 | $14.1K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 544 | $1.29K | 0.00% | +32+6.3% | Added |
| Bank of America Corp | 299 | $712 | 0.00% | +2+0.7% | Added |
| JPMorgan Chase & Co | 107 | $255 | 0.00% | +103+2,575.0% | Added |
| Wells Fargo & Company | 30 | $71 | 0.00% | +1+3.4% | Added |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −22,533−100.0% | Sold out |
| Canton Hathaway, LLC | 0 | $0 | 0.00% | −20,000−100.0% | Sold out |
| Steward Financial Group LLC | – | – | – | – | Not filed |