AMS — AMERICAN SHARED HOSPITAL SVC
As of Q2 2026, 5 SEC-registered investment managers reported holding AMS (AMERICAN SHARED HOSPITAL SVC) in their latest 13F filings, with a combined reported value of $172.08K across 108.90K shares. That is -6.4% by share count (-7.50K shares) versus the previous quarter, while reported value moved +1.9%. Ownership is concentrated: the five largest holders account for 100.0% of reported value and the top ten for 100.0%.
Compared with the prior quarter, 1 opened new positions, 2 added to existing stakes, 1 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
AMS is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| Vanguard Group history | Q4 2025 | 181.14K | $382.21K | 0.00% | Hold |
| Renaissance Technologies history | Q2 2026 | 57.70K | $91.16K | 0.00% | Add |
| Geode Capital Management history | Q2 2026 | 26.50K | $41.89K | 0.00% | Reduce |
| Citadel Advisors history | Q1 2026 | 28.56K | $41.41K | 0.00% | New |
| Two Sigma Investments history | Q3 2024 | 10.52K | $32.07K | 0.00% | Reduce |
| UBS Group AG history | Q2 2026 | 18.39K | $29.06K | 0.00% | Add |
| Morgan Stanley history | Q2 2026 | 5.86K | $9.26K | 0.00% | Hold |
| Wells Fargo & Co history | Q2 2025 | 550 | $1.33K | 0.00% | Hold |
| Citigroup Inc history | Q2 2026 | 454 | $717 | 0.00% | New |
| Bank of America Corp history | Q4 2025 | 60 | $126 | 0.00% | Reduce |
| JPMorgan Chase & Co history | Q3 2025 | 7 | $20 | 0.00% | Hold |
New Positions (Q2 2026)
- Citigroup Inc 454 sh · $717
Fully Exited (vs previous quarter)
- Citadel Advisors sold 28.56K sh · $41.41K
Fund Position History — shares by quarter (top 11 funds)
| Fund | Q3 2021 | Q4 2021 | Q1 2022 | Q2 2022 | Q3 2022 | Q4 2022 | Q1 2023 | Q2 2023 | Q3 2023 | Q4 2023 | Q1 2024 | Q2 2024 | Q3 2024 | Q4 2024 | Q1 2025 | Q2 2025 | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Renaissance Technologies | 11.50K | 13.70K | 12.30K | 15.30K | 19.32K | 26.00K | 45.20K | 74.80K | 59.99K | 35.50K | 42.30K | 55.50K | 67.45K | 71.22K | 69.90K | 66.70K | 49.80K | 49.40K | 49.20K | 57.70K |
| Geode Capital Management | — | — | — | — | — | — | — | — | 17.92K | 17.92K | 17.92K | 25.90K | 28.78K | 28.78K | 32.73K | 33.09K | 32.66K | 32.66K | 32.59K | 26.50K |
| UBS Group AG | — | 5.58K | 2.20K | 2.20K | 6.45K | 4.61K | 1.99K | 466 | — | — | 3.81K | — | 896 | — | — | — | 50 | — | 200 | 18.39K |
| Morgan Stanley | 5.91K | 5.91K | 7.03K | 5.91K | 5.91K | 5.91K | 5.91K | 5.91K | 5.91K | 5.91K | 5.91K | 6.36K | 6.36K | 6.36K | 6.36K | 6.36K | 6.81K | 6.31K | 5.86K | 5.86K |
| Citigroup Inc | — | — | — | — | — | — | — | — | — | — | — | 134 | — | — | — | — | — | 142 | — | 454 |
| Citadel Advisors | — | — | — | — | — | — | 13.84K | 33.22K | 18.68K | 24.07K | — | — | — | — | — | — | — | — | 28.56K | — |
| JPMorgan Chase & Co | — | — | — | — | — | — | — | — | 4 | 107 | 9 | 9 | 9 | 9 | 8 | 7 | 7 | — | — | — |
| Bank of America Corp | 297 | 298 | 297 | 297 | 297 | 301 | 297 | 297 | 297 | 299 | 297 | 329 | 41 | 34 | 34 | 72 | 65 | 60 | — | — |
| Vanguard Group | 104.64K | 104.64K | 104.64K | 104.64K | 104.54K | 104.54K | 99.85K | 99.85K | 101.41K | 117.88K | 178.67K | 181.24K | 181.24K | 181.24K | 181.24K | 181.24K | 181.14K | 181.14K | — | — |
| Two Sigma Investments | 26.40K | 15.13K | 11.12K | 10.72K | 10.72K | 10.72K | 10.72K | 10.72K | 10.72K | 10.72K | 10.72K | 10.72K | 10.52K | — | — | — | — | — | — | — |
| Wells Fargo & Co | 21 | 21 | 21 | 24 | 24 | 25 | 26 | 27 | 29 | 30 | 31 | — | 550 | 550 | 550 | 550 | — | — | — | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details