OS Therapies Inc
OSTX
30 hedge funds and large institutions have $5.51M invested in OS Therapies Inc in 2026 Q2 according to their latest regulatory filings, with 6 funds opening new positions, 16 increasing their positions, 3 reducing their positions, and 6 closing their positions.
433% more repeat investments, than reductions
Existing positions increased: 16 | Existing positions reduced: 3
1% more capital inflows, than outflows
Capital inflows: $1.47M | Capital outflows: $1.45M
0% more funds holding
Funds holding: 30 → 30 (0)
0% less ownership
Funds ownership: 8.23% → 8.23% (-0%)
0% more first-time investments, than exits
New positions opened: 6 | Existing positions closed: 6
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Vanguard Capital Management
Malvern,
Pennsylvania
|
+$517K |
| 2 |
BlackRock
New York
|
+$298K |
| 3 |
Marshall Wace
London,
United Kingdom
|
+$169K |
| 4 |
HighTower Advisors
Chicago,
Illinois
|
+$118K |
| 5 |
Vanguard Fiduciary Trust
Malvern,
Pennsylvania
|
+$96.4K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$730K |
| 2 |
UBS Group
Zurich,
Switzerland
|
-$570K |
| 3 |
Sanders Morris Harris
Houston,
Texas
|
-$45.1K |
| 4 |
XTX Topco
George Town,
Cayman Islands
|
-$44.6K |
| 5 |
Jane Street
New York
|
-$22.3K |
OSTX Hedge Fund Activity: Q2 2026 in Review
30 of the 8,377 institutional investors tracked by Wall St. Rank reported a position in OS Therapies Inc (OSTX) for Q2 2026, worth a combined $5.51M — up 35% from $4.09M a quarter earlier.
Fund positioning in OSTX was balanced in Q2 2026: 6 funds opened new positions, 6 closed out, 16 added to existing stakes and 3 trimmed.
The largest buyer was Vanguard Capital Management, adding an estimated $517K. The largest seller was Susquehanna International Group, cutting an estimated $730K.
- 30 institutional investors held OS Therapies Inc (OSTX) as of Q2 2026, unchanged from Q1 2026.
- Funds reported $5.51M of OS Therapies Inc stock for Q2 2026, up 35% quarter-over-quarter.
- 6 funds opened new OS Therapies Inc positions in Q2 2026 and 6 closed out, a net change of 0 holders.
- The largest OS Therapies Inc buyer in Q2 2026 was Vanguard Capital Management, an estimated $517K added.
- The largest OS Therapies Inc seller in Q2 2026 was Susquehanna International Group, an estimated $730K sold.
Based on aggregated 13F filings for Q2 2026.