Cytosorbents Corp
CTSO
50 hedge funds and large institutions have $9.32M invested in Cytosorbents Corp in 2026 Q1 according to their latest regulatory filings, with 10 funds opening new positions, 9 increasing their positions, 12 reducing their positions, and 7 closing their positions.
43% more first-time investments, than exits
New positions opened: 10 | Existing positions closed: 7
0.62% less ownership
Funds ownership: 26.85% → 26.23% (-0.62%)
2% less funds holding
Funds holding: 51 → 50 (-1)
14% less capital invested
Capital invested by funds: $10.8M → $9.32M (-$1.46M)
25% less repeat investments, than reductions
Existing positions increased: 9 | Existing positions reduced: 12
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Geode Capital Management
Boston,
Massachusetts
|
+$70.6K |
| 2 |
Neuberger Berman Group
New York
|
+$39.2K |
| 3 |
RWM
Ritholtz Wealth Management
New York
|
+$18.7K |
| 4 |
HF
HRT Financial
New York
|
+$9.63K |
| 5 |
BlackRock
New York
|
+$8.49K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SC
Skylands Capital
Milwaukee,
Wisconsin
|
-$100K |
| 2 |
GCP
GSA Capital Partners
London,
United Kingdom
|
-$95K |
| 3 |
Citadel Advisors
Miami,
Florida
|
-$94.5K |
| 4 |
SIG
Sargent Investment Group
Bethesda,
Maryland
|
-$42.4K |
| 5 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$36.5K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
GCP
51
GSA Capital Partners
London,
United Kingdom
| – | -$95K | -148,374 | Closed |
|
|
AFG
52
Atomi Financial Group
New York
| – | -$17.5K | -27,443 | Closed |
|
|
VF
53
Virtu Financial
New York
| – | -$7K | -10,780 | Closed |
|
54
Millennium Management
New York
| – | -$6.52K | -10,205 | Closed |
|
|
TRCT
55
Tower Research Capital (TRC)
New York
| – | -$1.39K | -2,170 | Closed |
|
56
Fidelity Investments
Boston,
Massachusetts
| – | -$245 | -384 | Closed |
|
|
MWA
57
Medallion Wealth Advisors
Farmington,
Connecticut
| – | -$29 | -45 | Closed |
|
CTSO Hedge Fund Activity: Q1 2026 in Review
50 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Cytosorbents Corp (CTSO) for Q1 2026, worth a combined $9.32M — down 14% from $10.8M a quarter earlier.
Buyers outnumbered sellers: 10 funds opened new CTSO positions and 7 closed out — a net gain of 3 holders — while 9 added to existing stakes and 12 trimmed.
The largest buyer was Geode Capital Management, adding an estimated $70.6K. The largest seller was Skylands Capital, cutting an estimated $100K.
- 50 institutional investors held Cytosorbents Corp (CTSO) as of Q1 2026, down from 51 in Q4 2025.
- Funds reported $9.32M of Cytosorbents Corp stock for Q1 2026, down 14% quarter-over-quarter.
- 10 funds opened new Cytosorbents Corp positions in Q1 2026 and 7 closed out, a net change of +3 holders.
- The largest Cytosorbents Corp buyer in Q1 2026 was Geode Capital Management, an estimated $70.6K added.
- The largest Cytosorbents Corp seller in Q1 2026 was Skylands Capital, an estimated $100K sold.
Based on aggregated 13F filings for Q1 2026.