Who Owns AMS?
American Shared Hospital Services — Institutional Ownership & 13F Holdings
$1.32
+0.00 (+0.00%)
Market Cap
$13.8M
Shares Outstanding
6,602,000
Institutional Holders
18
Total Inst. Value
$2.0M
% of Float Held
—
QoQ Holder Change
-1
Institutional data as of Q1 2025
New Positions
1
Closed Positions
1
Increased
1
Decreased
5
Institutional Ownership Trend
Top 10 Institutional Holders(Q1 2025)
| # | Fund | Value | Shares |
|---|---|---|---|
| 1 | DIMENSIONAL FUND ADVISORS LP | $584K | 209,959 |
| 2 | VANGUARD GROUP INC | $503K | 181,243 |
| 3 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $269K | 96,691 |
| 4 | RENAISSANCE TECHNOLOGIES LLC | $194K | 69,900 |
| 5 | FINANCIAL COUNSELORS INC | $103K | 37,123 |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $90K | 32,728 |
| 7 | JAMES INVESTMENT RESEARCH, INC. | $83K | 29,725 |
| 8 | NewEdge Advisors, LLC | $83K | 29,725 |
| 9 | ACADIAN ASSET MANAGEMENT LLC | $43K | 15,484 |
| 10 | Empowered Funds, LLC | $33K | 11,924 |
Biggest Buyers & Sellers This Quarter
Top Buyers
| Fund | Shares Added | Value |
|---|---|---|
| GEODE CAPITAL MANAGEMENT, LLC | +4K | $90K |
| OSAIC HOLDINGS, INC.New | +300 | $834 |
Top Sellers
| Fund | Shares Removed | Value |
|---|---|---|
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | -167K | $269K |
| ACADIAN ASSET MANAGEMENT LLC | -2K | $43K |
| RENAISSANCE TECHNOLOGIES LLC | -1K | $194K |
| Tower Research Capital LLC (TRC) | -445 | $2K |
| JPMORGAN CHASE & CO | -1 | $0 |
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Frequently Asked Questions
How many institutional investors hold AMS?
As of Q1 2025, 18 institutional investors report holding AMS (American Shared Hospital Services) in their 13F filings.
Which hedge fund owns the most AMS?
The largest institutional holder of AMS is DIMENSIONAL FUND ADVISORS LP with $584K in shares.
Are institutions buying or selling AMS?
This quarter, 1 institutions opened new positions in AMS and 1 closed their positions.
What is 13F institutional ownership?
SEC Form 13F is a quarterly report filed by institutional investment managers with over $100M in qualifying assets. It discloses their US equity holdings, providing transparency into what the largest investors are buying and selling.
How often is institutional ownership data updated?
13F filings are due 45 days after each calendar quarter end (May 15, Aug 14, Nov 14, Feb 14). Data is updated on HedgeTrace as new filings are processed.