Cytosorbents Corp
CTSO
48 hedge funds and large institutions have $15.3M invested in Cytosorbents Corp in 2025 Q3 according to their latest regulatory filings, with 8 funds opening new positions, 13 increasing their positions, 9 reducing their positions, and 4 closing their positions.
100% more first-time investments, than exits
New positions opened: 8 | Existing positions closed: 4
44% more repeat investments, than reductions
Existing positions increased: 13 | Existing positions reduced: 9
7% more funds holding
Funds holding: 45 → 48 (+3)
0.23% less ownership
Funds ownership: 26.26% → 26.03% (-0.23%)
14% less capital inflows, than outflows
Capital inflows: $477K | Capital outflows: $557K
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
GSA Capital Partners
London,
United Kingdom
|
+$111K |
| 2 |
Vanguard Group
Malvern,
Pennsylvania
|
+$78.3K |
| 3 |
Citadel Advisors
Miami,
Florida
|
+$64.7K |
| 4 |
Waverly Advisors
Birmingham,
Alabama
|
+$54.7K |
| 5 |
CM
CM Management
Gulf Breeze,
Florida
|
+$37.5K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Skylands Capital
Milwaukee,
Wisconsin
|
-$482K |
| 2 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$33.1K |
| 3 |
Squarepoint
New York
|
-$15K |
| 4 |
Sargent Investment Group
Bethesda,
Maryland
|
-$7.39K |
| 5 |
UBS Group
Zurich,
Switzerland
|
-$7.03K |
CTSO Hedge Fund Activity: Q3 2025 in Review
48 of the 7,650 institutional investors tracked by Wall St. Rank reported a position in Cytosorbents Corp (CTSO) for Q3 2025, worth a combined $15.3M — down 26% from $20.7M a quarter earlier.
Buyers outnumbered sellers: 8 funds opened new CTSO positions and 4 closed out — a net gain of 4 holders — while 13 added to existing stakes and 9 trimmed.
The largest buyer was GSA Capital Partners, opening a new position worth an estimated $111K. The largest seller was Skylands Capital, cutting an estimated $482K.
- 48 institutional investors held Cytosorbents Corp (CTSO) as of Q3 2025, up from 45 in Q2 2025.
- Funds reported $15.3M of Cytosorbents Corp stock for Q3 2025, down 26% quarter-over-quarter.
- 8 funds opened new Cytosorbents Corp positions in Q3 2025 and 4 closed out, a net change of +4 holders.
- The largest Cytosorbents Corp buyer in Q3 2025 was GSA Capital Partners, an estimated $111K added.
- The largest Cytosorbents Corp seller in Q3 2025 was Skylands Capital, an estimated $482K sold.
Based on aggregated 13F filings for Q3 2025.