CytosorbentsCTSO
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 50 institutions reported holding Cytosorbents Corp. (CTSO) in their 13F filings, down 1 from Q4 2025. 6 opened new positions and 7 sold out. The largest holders were Avenir Corp. ($3.0M), Vanguard Capital Management LLC ($1.1M) and Skylands Capital, LLC ($967K). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Cytosorbents Corp.
- CUSIP
- 23283X206
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 6 | $30K |
| Exits | 7 | $128K |
All 13F filers, Q4 2025 → Q1 2026: 245,467 shares bought and 634,261 shares sold, net −388,794 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 50 holders
| Avenir Corp. | 0.36% | Reduce -0.3% | 5,215,776 | $3.0M |
| Vanguard Capital Management LLC | 0.00% | — | 1,879,989 | $1.1M |
| Skylands Capital, LLC | 0.13% | Reduce -7.9% | 1,707,498 | $967K |
| Neuberger Berman Group LLC | 0.00% | Add +3.5% | 1,683,007 | $951K |
| CM Management, LLC | 0.70% | No change | 1,476,500 | $836K |
| BlackRock, Inc. | 0.00% | Add +1.6% | 782,992 | $443K |
| Geode Capital Management, LLC | 0.00% | Add +17.1% | 707,262 | $401K |
| Sargent Investment Group, LLC | 0.04% | Reduce -10.2% | 549,900 | $311K |
| Pathstone Holdings, LLC | 0.00% | No change | 499,955 | $283K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 313,856 | $178K |
| CIBC Bancorp USA Inc. | 0.00% | — | 172,649 | $98K |
| State Street Corp. | 0.00% | No change | 159,293 | $90K |
| Osaic Holdings, Inc. | 0.00% | No change | 130,419 | $74K |
| UBS Group AG | 0.00% | Reduce -0.1% | 115,200 | $65K |
| Raymond James Financial Inc. | 0.00% | Reduce -0.9% | 107,751 | $61K |
| NWF Advisory Services Inc. | 0.01% | No change | 104,139 | $59K |
| Renaissance Technologies | 0.00% | Add +0.6% | 100,720 | $57K |
| Morgan Stanley | 0.00% | Reduce -14.0% | 100,169 | $57K |
| Northern Trust Corp. | 0.00% | No change | 92,540 | $52K |
| Key Client Fiduciary Advisors, LLC | 0.02% | No change | 78,457 | $44K |
| Waverly Advisors, LLC | 0.00% | No change | 55,556 | $31K |
| Stifel Financial Corp. | 0.00% | No change | 48,000 | $27K |
| Goldman Sachs Group Inc. | 0.00% | Add +22.2% | 43,947 | $25K |
| Bank of America Corp. | 0.00% | Add +1.1% | 39,123 | $22K |
| XTX Topco Ltd | 0.00% | Add +19.8% | 35,570 | $20K |
| Susquehanna International Group, LLP | 0.00% | Reduce -64.1% | 29,945 | $17K |
| Kestra Advisory Services, LLC | 0.00% | Add +9.7% | 28,200 | $16K |
| EP Wealth Advisors, LLC | 0.00% | No change | 28,000 | $16K |
| Ritholtz Wealth Management | 0.00% | New | 27,443 | $16K |
| LPL Financial LLC | 0.00% | Add +0.5% | 23,185 | $13K |
| Creative Planning | 0.00% | No change | 21,295 | $12K |
| Seelaus Asset Management LLC | 0.01% | Reduce -5.8% | 16,300 | $9K |
| Merit Financial Group, LLC | 0.00% | No change | 15,297 | $9K |
| First National Bank of Omaha | 0.00% | No change | 15,225 | $9K |
| Vanguard Global Advisers, LLC | 0.00% | — | 13,865 | $8K |
| HRT Financial LP | 0.00% | New | 14,113 | $7K |
| Texas Capital Bank Wealth Management Services Inc | 0.00% | No change | 11,000 | $6K |
| Citadel Advisors | 0.00% | Reduce -92.8% | 10,799 | $6K |
| Marathon Capital Management | 0.00% | New | 10,000 | $6K |
| Fifth Third Bancorp | 0.00% | New | 3,082 | $2K |
| Rockefeller Capital Management L.P. | 0.00% | Reduce -27.5% | 1,861 | $1K |
| JPMorgan Chase & Co. | 0.00% | No change | 372 | $208 |
| Your Advocates Ltd., LLP | 0.00% | No change | 250 | $143 |
| Wells Fargo & Company | 0.00% | Reduce -65.8% | 250 | $142 |
| MAI Capital Management | 0.00% | No change | 233 | $132 |
| Jones Financial Companies LLLP | 0.00% | No change | 93 | $55 |
| PNC Financial Services Group, Inc. | 0.00% | No change | 31 | $18 |
| BNP Paribas Financial Markets | 0.00% | Reduce -15.0% | 17 | $10 |
| Farther Finance Advisors, LLC | 0.00% | New | 6 | $3 |
| SBI Securities Co., Ltd. | 0.00% | New | 1 | $1 |
"% of holder's portfolio" is CTSO's weight in each manager's 13F, not the share of Cytosorbents Corp. the manager owns.