Cytosorbents Corp
CTSO- Exchange
- Nasdaq
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001175151
In the last 90 days, Cytosorbents Corp insiders filed 4 open-market purchases and 0 sales; 50 institutions reported holding it in 13F filings for Q2 2026, worth $6.04M in total; no superinvestor holds it.
Q2 2025 vs. Q1 2025
How the institutions holding Cytosorbents Corp changed between Q1 2025 and Q2 2025.
All holders in Q2 2025All holders in Q1 2025
| Measure | Q1 2025 | Q2 2025 | Change |
|---|---|---|---|
| Holders | 49 | 45 | −4 |
| Shares | 16.9M | 16.4M | −498.3K (−2.9%) |
| Value | $16.9M | $20.7M | +$3.80M (+22.4%) |
New holders (3)
Institutions that held Cytosorbents Corp at the end of Q2 2025 but not at the end of Q1 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Susquehanna International Group, LLP | 131,853 | $168.8K | 0.00% |
| Royal Bank of Canada | 800 | $1.00K | 0.00% |
| Simplex Trading, LLC | 100 | $0 | 0.00% |
Sold out (7)
Institutions that held Cytosorbents Corp at the end of Q1 2025 and filed for Q2 2025 without it.
| Institution | Shares, Q1 2025 | Value, Q1 2025 |
|---|---|---|
| Granahan Investment Management Inc | 358,418 | $358.4K |
| Gsa Capital Partners LLP | 53,030 | $53.0K |
| XTX Topco Ltd | 30,113 | $30.1K |
| Two Sigma Securities, LLC | 15,287 | $15.3K |
| Citadel Advisors LLC | 8,183 | $8.18K |
| Hexagon Capital Partners LLC | 3,333 | $3.33K |
| Lazard Asset Management LLC | 954 | $0 |