22 institutions reported holding $1.4M of AMERICAN SHARED HOSPITAL SVC (AMS) in SEC 13F filings for 2026-03-31. Largest institutional holders: DIMENSIONAL FUND ADVISORS LP ($297,424), Corient Private Wealth LLC ($232,811), VANGUARD CAPITAL MANAGEMENT LLC ($222,919), BRIDGEWAY CAPITAL MANAGEMENT, LLC ($131,689), LPL Financial LLC ($110,731). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | DIMENSIONAL FUND ADVISORS LP | $297,424 | 205,120 | Trimmed |
| 2 | Corient Private Wealth LLC | $232,811 | 160,559 | Trimmed |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $222,919 | 153,737 | New |
| 4 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $131,689 | 90,820 | Trimmed |
| 5 | LPL Financial LLC | $110,731 | 76,366 | New |
| 6 | RENAISSANCE TECHNOLOGIES LLC | $71,340 | 49,200 | Trimmed |
| 7 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $61,355 | 42,314 | Added |
| 8 | DRW Securities, LLC | $47,689 | 32,889 | Trimmed |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $47,273 | 32,588 | Trimmed |
| 10 | JAMES INVESTMENT RESEARCH, INC. | $43,101 | 29,725 | Hold |
| 11 | CITADEL ADVISORS LLC | $41,409 | 28,558 | New |
| 12 | VANGUARD FIDUCIARY TRUST CO | $39,739 | 27,406 | New |
| 13 | NewEdge Advisors, LLC | $29,725 | 29,725 | Hold |
| 14 | STATE STREET CORP | $17,546 | 12,101 | Hold |
| 15 | Empowered Funds, LLC | $17,290 | 11,924 | New |
| 16 | MORGAN STANLEY | $8,494 | 5,858 | Trimmed |
| 17 | Tower Research Capital LLC (TRC) | $4,080 | 2,814 | Added |
| 18 | UBS Group AG | $290 | 200 | New |
| 19 | JONES FINANCIAL COMPANIES LLLP | $181 | 100 | Hold |
| 20 | CITIGROUP INC | $0 | 0 | Exited |
| 21 | Royal Bank of Canada | $0 | 69 | Added |
| 22 | BANK OF AMERICA CORP /DE/ | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31