OS Therapies Inc
OSTX
6 hedge funds and large institutions have $599K invested in OS Therapies Inc in 2025 Q1 according to their latest regulatory filings, with 2 funds opening new positions, 2 increasing their positions, 1 reducing their positions, and 1 closing their positions.
100% more first-time investments, than exits
New positions opened: 2 | Existing positions closed: 1
100% more repeat investments, than reductions
Existing positions increased: 2 | Existing positions reduced: 1
20% more funds holding
Funds holding: 5 → 6 (+1)
1.11% more ownership
Funds ownership: 0.68% → 1.79% (+1.1%)
3% less capital invested
Capital invested by funds: $621K → $599K (-$21.3K)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CM
CM Management
Gulf Breeze,
Florida
|
+$446K |
| 2 |
ISL
Ingalls & Snyder LLC
New York
|
+$86K |
| 3 |
BlackRock
New York
|
+$80.6K |
| 4 |
Stifel Financial
St. Louis,
Missouri
|
+$35.2K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
-$128K |
| 2 |
Morgan Stanley
New York
|
-$4.41K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
CM
1
CM Management
Gulf Breeze,
Florida
| $462K | +$446K | +189,956 | +173% |
|
|
2
BlackRock
New York
| $57.8K | +$80.6K | +34,364 | +1,093% |
|
|
ISL
3
Ingalls & Snyder LLC
New York
| $56K | +$86K | +36,676 | New |
|
|
4
Stifel Financial
St. Louis,
Missouri
| $23.1K | +$35.2K | +15,000 | New |
|
|
AAG
5
Armstrong Advisory Group
Needham,
Massachusetts
| $428 | – | – | – |
|
|
6
Morgan Stanley
New York
| $5 | -$4.41K | -1,878 | -100% |
|
|
7
Millennium Management
New York
| – | -$128K | -29,836 | Closed |
|
OSTX Hedge Fund Activity: Q1 2025 in Review
6 of the 7,461 institutional investors tracked by Wall St. Rank reported a position in OS Therapies Inc (OSTX) for Q1 2025, worth a combined $599K — down 3.4% from $621K a quarter earlier.
Buyers outnumbered sellers: 2 funds opened new OSTX positions and 1 closed out — a net gain of 1 holder — while 2 added to existing stakes and 1 trimmed.
The largest buyer was CM Management, adding an estimated $446K. The largest seller was Millennium Management, exiting entirely with an estimated $128K sold.
- 6 institutional investors held OS Therapies Inc (OSTX) as of Q1 2025, up from 5 in Q4 2024.
- Funds reported $599K of OS Therapies Inc stock for Q1 2025, down 3.4% quarter-over-quarter.
- 2 funds opened new OS Therapies Inc positions in Q1 2025 and 1 closed out, a net change of +1 holder.
- The largest OS Therapies Inc buyer in Q1 2025 was CM Management, an estimated $446K added.
- The largest OS Therapies Inc seller in Q1 2025 was Millennium Management, an estimated $128K sold.
Based on aggregated 13F filings for Q1 2025.