OS THERAPIES INCORPORATED (OSTX)
Institutional ownership reported to the SEC as of Q2 2026, across 8 quarters.
29
Reporting holders
$5.4M
Reported value
6.2%
Of shares outstanding
0.0%
Held as options
+1
Holder change
Institutions report 2,859,397 shares against 46,125,825 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | $1.5M | 777,651 | 0.00% | 2q | +65.6%+$585.5K |
| CM Management, LLC | $760.0K | 400,000 | 0.48% | 8q | HELD |
| GEODE CAPITAL MANAGEMENT, LLC | $573.4K | 301,794 | 0.00% | 4q | +7.8%+$41.3K |
| HOWARD FINANCIAL SERVICES, LTD. | $471.2K | 248,001 | 0.05% | 2q | +1.0%+$4.9K |
| BlackRock, Inc. | $460.7K | 242,479 | 0.00% | 7q | +274.4%+$337.6K |
| VANGUARD FIDUCIARY TRUST CO | $330.9K | 174,132 | 0.00% | 2q | +49.3%+$109.2K |
| STATE STREET CORP | $228.2K | 120,100 | 0.00% | 4q | +31.7%+$54.9K |
| MARSHALL WACE, LLP | $191.2K | 100,640 | 0.00% | new | NEW |
| HighTower Advisors, LLC | $162.5K | 85,550 | 0.00% | 2q | +462.8%+$133.7K |
| NORTHERN TRUST CORP | $134.6K | 70,817 | 0.00% | 4q | +7.2%+$9.0K |
| Beacon Pointe Advisors, LLC | $118.8K | 62,507 | 0.00% | 2q | HELD |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $85.5K | 45,000 | 0.00% | 5q | +80.0%+$38.0K |
| TWO SIGMA INVESTMENTS, LP | $57.8K | 30,414 | 0.00% | 4q | +15.3%+$7.7K |
| STIFEL FINANCIAL CORP | $53.0K | 27,900 | 0.00% | 6q | +86.0%+$24.5K |
| JANE STREET GROUP, LLC | $51.3K | 26,999 | 0.00% | 3q | -33.0%-$25.3K |
| AXQ CAPITAL, LP | $46.8K | 24,623 | 0.01% | new | NEW |
| Vanguard Global Advisers, LLC | $39.8K | 20,958 | 0.00% | 2q | HELD |
| Stratos Wealth Advisors, LLC | $36.7K | 19,314 | 0.00% | 3q | +39.8%+$10.4K |
| Quadrature Capital Ltd | $29.8K | 15,662 | 0.00% | new | NEW |
| JONES FINANCIAL COMPANIES LLLP | $27.3K | 14,501 | 0.00% | 4q | +12.2%+$3.0K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $25.7K | 13,532 | 0.00% | 2q | -97.0%-$826.9K |
| MORGAN STANLEY | $24.7K | 13,000 | 0.00% | 7q | +37.0%+$6.7K |
| UBS Group AG | $16.7K | 8,813 | 0.00% | 5q | -97.5%-$645.8K |
| Rockefeller Capital Management L.P. | $14.2K | 7,500 | 0.00% | new | NEW |
| Steward Partners Investment Advisory, LLC | $10.8K | 5,681 | 0.00% | new | NEW |
| BARCLAYS PLC | $2.9K | 1,534 | 0.00% | new | NEW |
| MERCER GLOBAL ADVISORS INC /ADV | $251 | 132 | 0.00% | 4q | -98.7%-$19.2K |
| ARMSTRONG ADVISORY GROUP, INC | $190 | 100 | 0.00% | 8q | HELD |
| Caitong International Asset Management Co., Ltd | $120 | 63 | 0.00% | 2q | +270.6% |
| INGALLS & SNYDER LLC | $70 | 36,676 | 0.00% | 6q | HELD |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 29 | $5.4M | 2,859,397 | 6 | 15 | 4 | 0.0% |
| Q1 2026 | 28 | $4.0M | 2,860,894 | 8 | 8 | 2 | 0.0% |
| Q4 2025 | 23 | $2.4M | 1,738,593 | 6 | 8 | 4 | 0.0% |
| Q3 2025 | 23 | $2.8M | 1,450,757 | 13 | 4 | 2 | 0.0% |
| Q2 2025 | 11 | $1.0M | 545,519 | 6 | 2 | 1 | 0.0% |
| Q1 2025 | 5 | $543.3K | 352,610 | 1 | 2 | 1 | 0.0% |
| Q4 2024 | 5 | $620.6K | 145,004 | 2 | 1 | 1 | 0.0% |
| Q3 2024 | 5 | $370.8K | 132,422 | 5 | 0 | 0 | 0.0% |