OS Therapies Inc
OSTX- Exchange
- NYSE
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001795091
No open-market purchases or sales by OS Therapies Inc insiders were filed in the last 90 days; 29 institutions reported holding it in 13F filings for Q2 2026, worth $5.50M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in OS Therapies Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 29
- +5 vs. Q4 2025
- Shares held
- 2.90M
- +1.66M (+134.6%) vs. Q4 2025
- Total value
- $4.09M
- +$2.36M (+136.3%) vs. Q4 2025
- New holders
- 11
- 8 more added
- Sold out
- 6
- 2 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting OSTX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 29 | $5.50M |
| Q1 2026 | 29 | $4.09M |
| Q4 2025 | 25 | $2.49M |
| Q3 2025 | 25 | $3.07M |
| Q2 2025 | 13 | $1.13M |
| Q1 2025 | 6 | $599.3K |
| Q4 2024 | 5 | $620.6K |
| Q3 2024 | 7 | $447.8K |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding OS Therapies Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 2 | $2 | 0.00% | +2 | New |
| Caitong International Asset Management Co., Ltd | 17 | $24 | 0.00% | +17 | New |
| Armstrong Advisory Group, Inc | 100 | $141 | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 4,179 | $5.89K | 0.00% | +4,091+4,648.9% | Added |
| Morgan Stanley | 9,490 | $13.4K | 0.00% | +8,490+849.0% | Added |
| LPL Financial LLC | 10,113 | $14.3K | 0.00% | 00.0% | Unchanged |
| Mercer Global Advisors Inc | 10,220 | $14.4K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 12,921 | $18.2K | 0.00% | +2,054+18.9% | Added |
| Stratos Wealth Advisors, LLC | 13,817 | $19.5K | 0.00% | 00.0% | Unchanged |
| Stifel Financial Corp | 15,000 | $21.1K | 0.00% | 00.0% | Unchanged |
| HighTower Advisors, LLC | 15,200 | $21.4K | 0.00% | +15,200 | New |
| Vanguard Global Advisers, LLC | 20,958 | $29.6K | 0.00% | +20,958 | New |
| Bridgeway Capital Management, LLC | 25,000 | $35.3K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 26,380 | $37.2K | 0.00% | −61,157−69.9% | Reduced |
| XTX Topco Ltd | 31,622 | $44.6K | 0.00% | +31,622 | New |
| Sanders Morris Harris LLC | 32,000 | $45.1K | 0.01% | +32,000 | New |
| Ingalls & Snyder LLC | 36,676 | $52.0K | 0.00% | 00.0% | Unchanged |
| Jane Street Group, LLC | 40,316 | $56.8K | 0.00% | +12,576+45.3% | Added |
| Beacon Pointe Advisors, LLC | 62,507 | $88.1K | 0.00% | +62,507 | New |
| BlackRock, Inc. | 64,772 | $91.3K | 0.00% | +3,347+5.4% | Added |
| Northern Trust Corp | 66,054 | $93.1K | 0.00% | −5,255−7.4% | Reduced |
| State Street Corp | 91,200 | $128.6K | 0.00% | +32,700+55.9% | Added |
| Vanguard Fiduciary Trust Co | 116,663 | $164.5K | 0.00% | +116,663 | New |
| Howard Financial Services, Ltd. | 245,436 | $346.1K | 0.04% | +245,436 | New |
| Geode Capital Management, LLC | 280,045 | $394.9K | 0.00% | +34,007+13.8% | Added |
| UBS Group AG | 348,678 | $491.6K | 0.00% | +330,522+1,820.5% | Added |
| CM Management, LLC | 400,000 | $564.0K | 0.47% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 448,737 | $632.7K | 0.00% | +448,737 | New |
| Vanguard Capital Management LLC | 469,467 | $661.9K | 0.00% | +469,467 | New |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −109,949−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −30,785−100.0% | Sold out |
| Royal Bank of Canada | 0 | $0 | 0.00% | −480−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −23−100.0% | Sold out |
| FNY Investment Advisers, LLC | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |