OS Therapies
OSTX · NYSE American
$1.26−$0.01 (−0.79%)TodayMarket closed ·
Prev close $1.27
Who owns OSTX
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 24.7% of OSTX’s shares.
- Einodmil LLC5.8%
- Romness (Paul A.)5.4%
- Ayala Pharmaceuticals Inc4.8%
- Satterfield (Thomas A Jr)3.9%
- Next 6 largest institutions4.8%
- All other shareholders75.3%
| Holder | Shares | % of shares |
|---|---|---|
| Einodmil LLC | 2.65M | 5.83% |
| Romness (Paul A.) | 2.47M | 5.43% |
| Ayala Pharmaceuticals Inc | 2.16M | 4.75% |
| Satterfield (Thomas A Jr) | 1.76M | 3.86% |
| Vanguard Capital Management, LLC | 777.65K | 1.71% |
| CM Management, LLC | 400.00K | 0.88% |
| Geode Capital Management, L.L.C. | 301.79K | 0.66% |
| Howard Financial Services, Ltd. | 248.00K | 0.54% |
| Search (Theodore F. Pharm.D.) | 237.92K | 0.52% |
| Ciccio (John) | 237.92K | 0.52% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 416.12K | 0.91% |
| Vanguard Extended Market Index Fund | 361.54K | 0.79% |
| Fidelity Extended Market Index Fund | 161.95K | 0.36% |
| iShares Micro-Cap ETF | 111.89K | 0.25% |
| Fidelity Series Total Market Index Fund | 51.51K | 0.11% |
Short interest
Settled Sep 30, 2026
- Shares short
- 2.60M
- Days to cover
- 3.88
- % of shares outstanding
- 5.70%
- Average daily volume
- 668.18K
- Change since last report
- +22.7%
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