Cytosorbents Corp
CTSO
45 hedge funds and large institutions have $20.7M invested in Cytosorbents Corp in 2025 Q2 according to their latest regulatory filings, with 3 funds opening new positions, 8 increasing their positions, 18 reducing their positions, and 7 closing their positions.
22% more capital invested
Capital invested by funds: $16.9M → $20.7M (+$3.8M)
4.63% less ownership
Funds ownership: 30.89% → 26.26% (-4.6%)
8% less funds holding
Funds holding: 49 → 45 (-4)
56% less repeat investments, than reductions
Existing positions increased: 8 | Existing positions reduced: 18
57% less first-time investments, than exits
New positions opened: 3 | Existing positions closed: 7
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CM
CM Management
Gulf Breeze,
Florida
|
+$297K |
| 2 |
Vanguard Group
Malvern,
Pennsylvania
|
+$176K |
| 3 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$132K |
| 4 |
BlackRock
New York
|
+$119K |
| 5 |
AC
Avenir Corporation
Alexandria,
Virginia
|
+$13.7K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SC
Skylands Capital
Milwaukee,
Wisconsin
|
-$388K |
| 2 |
GIM
Granahan Investment Management
Waltham,
Massachusetts
|
-$358K |
| 3 |
Renaissance Technologies
New York
|
-$109K |
| 4 |
Neuberger Berman Group
New York
|
-$88.3K |
| 5 |
SIG
Sargent Investment Group
Bethesda,
Maryland
|
-$77.6K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
51
Simplex Trading
Chicago,
Illinois
| – | +$100 | +100 | New |
|
CTSO Hedge Fund Activity: Q2 2025 in Review
45 of the 7,598 institutional investors tracked by Wall St. Rank reported a position in Cytosorbents Corp (CTSO) for Q2 2025, worth a combined $20.7M — up 22% from $16.9M a quarter earlier.
Sellers outnumbered buyers: 7 funds closed out of CTSO and 3 opened new positions — a net loss of 4 holders — while 18 trimmed existing stakes and 8 added.
The largest buyer was CM Management, adding an estimated $297K. The largest seller was Skylands Capital, cutting an estimated $388K.
- 45 institutional investors held Cytosorbents Corp (CTSO) as of Q2 2025, down from 49 in Q1 2025.
- Funds reported $20.7M of Cytosorbents Corp stock for Q2 2025, up 22% quarter-over-quarter.
- 3 funds opened new Cytosorbents Corp positions in Q2 2025 and 7 closed out, a net change of -4 holders.
- The largest Cytosorbents Corp buyer in Q2 2025 was CM Management, an estimated $297K added.
- The largest Cytosorbents Corp seller in Q2 2025 was Skylands Capital, an estimated $388K sold.
Based on aggregated 13F filings for Q2 2025.