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.
Q1 2026 vs. Q4 2025
How the institutions holding Cytosorbents Corp changed between Q4 2025 and Q1 2026.
All holders in Q1 2026All holders in Q4 2025
| Measure | Q4 2025 | Of which not filed for Q1 2026 | Q1 2026 | Change |
|---|---|---|---|---|
| Holders | 51 | 4 | 50 | +3 |
| Shares | 16.9M | 2.38M | 16.5M | +1.99M (+13.8%) |
| Value | $10.8M | $1.52M | $9.32M | +$67.7K (+0.7%) |
4 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.
New holders (10)
Institutions that held Cytosorbents Corp at the end of Q1 2026 but not at the end of Q4 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Vanguard Capital Management LLC | 1,879,989 | $1.06M | 0.00% |
| Vanguard Fiduciary Trust Co | 313,856 | $177.6K | 0.00% |
| CIBC Bancorp USA Inc. | 172,649 | $97.8K | 0.00% |
| Ritholtz Wealth Management | 27,443 | $15.5K | 0.00% |
| Vanguard Global Advisers, LLC | 13,865 | $7.85K | 0.00% |
| HRT Financial LP | 14,113 | $7.00K | 0.00% |
| Marathon Capital Management | 10,000 | $5.66K | 0.00% |
| Fifth Third Bancorp | 3,082 | $1.75K | 0.00% |
| Farther Finance Advisors, LLC | 6 | $3 | 0.00% |
| SBI Securities Co., Ltd. | 1 | $1 | 0.00% |
Sold out (7)
Institutions that held Cytosorbents Corp at the end of Q4 2025 and filed for Q1 2026 without it.
| Institution | Shares, Q4 2025 | Value, Q4 2025 |
|---|---|---|
| Gsa Capital Partners LLP | 148,374 | $95.0K |
| Atomi Financial Group, Inc. | 27,443 | $17.5K |
| Virtu Financial LLC | 10,780 | $7.00K |
| Millennium Management LLC | 10,205 | $6.52K |
| Tower Research Capital LLC (TRC) | 2,170 | $1.39K |
| FMR LLC | 384 | $245 |
| Medallion Wealth Advisors, LLC | 45 | $29 |
Not filed for Q1 2026 yet (4)
Institutions that held Cytosorbents Corp at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q4 2025 | Value, Q4 2025 |
|---|---|---|
| Vanguard Group Inc | 2,204,294 | $1.41M |
| CIBC Private Wealth Group, LLC | 172,649 | $110.4K |
| Comerica Bank | 4,376 | $2.80K |
| Global Retirement Partners, LLC | 2,265 | $1.45K |