American Shared Hospital SerAMS
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 20 institutions reported holding American Shared Hospital Ser (AMS) in their 13F filings, up 3 from Q4 2025. 4 opened new positions and 2 sold out. The largest holders were Dimensional Fund Advisors LP ($297K), Corient Private Wealth LP ($233K) and Vanguard Capital Management LLC ($223K). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- American Shared Hospital Ser
- CUSIP
- 029595105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $170K |
| Exits | 2 | $426 |
All 13F filers, Q4 2025 → Q1 2026: 132,875 shares bought and 23,115 shares sold, net +109,760 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 20 holders
| Dimensional Fund Advisors LP | 0.00% | Reduce -0.6% | 205,120 | $297K |
| Corient Private Wealth LP | 0.00% | No change | 160,559 | $233K |
| Vanguard Capital Management LLC | 0.00% | — | 153,737 | $223K |
| Bridgeway Capital Management, LLC | 0.00% | Reduce -3.5% | 90,820 | $132K |
| LPL Financial LLC | 0.00% | New | 76,366 | $111K |
| Renaissance Technologies | 0.00% | Reduce -0.4% | 49,200 | $71K |
| Susquehanna International Group, LLP | 0.00% | Add +54.6% | 42,314 | $61K |
| DRW Securities, LLC | 0.00% | Reduce -34.9% | 32,889 | $48K |
| Geode Capital Management, LLC | 0.00% | Reduce -0.2% | 32,588 | $47K |
| James Investment Research, Inc. | 0.00% | No change | 29,725 | $43K |
| NewEdge Advisors, LLC | 0.00% | No change | 29,725 | $43K |
| Citadel Advisors | 0.00% | New | 28,558 | $41K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 27,406 | $40K |
| State Street Corp. | 0.00% | No change | 12,101 | $18K |
| Empowered Funds, LLC | 0.00% | New | 11,924 | $17K |
| Morgan Stanley | 0.00% | Reduce -7.1% | 5,858 | $8K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +45.2% | 2,814 | $4K |
| UBS Group AG | 0.00% | New | 200 | $290 |
| Jones Financial Companies LLLP | 0.00% | No change | 100 | $181 |
| Royal Bank of Canada | 0.00% | Add +13.1% | 69 | $0 |
"% of holder's portfolio" is AMS's weight in each manager's 13F, not the share of American Shared Hospital Ser the manager owns.