CytosorbentsCTSO
13F holders, Q4 2025 (December 31)At the end of Q4 2025, 51 institutions reported holding Cytosorbents Corp. (CTSO) in their 13F filings, up 2 from Q3 2025. 8 opened new positions and 6 sold out. The largest holders were Avenir Corp. ($3.3M), Vanguard Group Inc. ($1.4M) and Skylands Capital, LLC ($1.2M). 3 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Cytosorbents Corp.
- CUSIP
- 23283X206
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 8 | $371K |
| Exits | 6 | $54K |
All 13F filers, Q3 2025 → Q4 2025: 1,091,396 shares bought and 576,055 shares sold, net +515,341 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 51 holders
| Avenir Corp. | 0.36% | Add +2.9% | 5,230,099 | $3.3M |
| Vanguard Group Inc. | 0.00% | No change | 2,204,294 | $1.4M |
| Skylands Capital, LLC | 0.16% | Reduce -12.8% | 1,854,515 | $1.2M |
| Neuberger Berman Group LLC | 0.00% | Add +1.7% | 1,625,640 | $1.0M |
| CM Management, LLC | 0.80% | Add +14.6% | 1,476,500 | $944K |
| BlackRock, Inc. | 0.00% | Add +0.8% | 770,551 | $493K |
| Sargent Investment Group, LLC | 0.05% | Reduce -17.1% | 612,000 | $391K |
| Geode Capital Management, LLC | 0.00% | Add +0.4% | 603,767 | $386K |
| Pathstone Holdings, LLC | 0.00% | New | 499,955 | $320K |
| CIBC Private Wealth Group LLC | 0.00% | No change | 172,649 | $110K |
| State Street Corp. | 0.00% | No change | 159,293 | $102K |
| Citadel Advisors | 0.00% | Add +127.3% | 149,279 | $95K |
| Gsa Capital Partners LLP | 0.01% | Add +32.2% | 148,374 | $95K |
| Osaic Holdings, Inc. | 0.00% | No change | 130,419 | $83K |
| Morgan Stanley | 0.00% | Add +8.6% | 116,480 | $74K |
| UBS Group AG | 0.00% | Add +0.1% | 115,272 | $74K |
| Raymond James Financial Inc. | 0.00% | Reduce -0.0% | 108,702 | $69K |
| NWF Advisory Services Inc. | 0.01% | No change | 104,139 | $67K |
| Renaissance Technologies | 0.00% | Reduce -25.7% | 100,120 | $64K |
| Northern Trust Corp. | 0.00% | Add +1.1% | 92,540 | $59K |
| Susquehanna International Group, LLP | 0.00% | Reduce -15.1% | 83,363 | $53K |
| Key Client Fiduciary Advisors, LLC | 0.02% | No change | 78,457 | $50K |
| Waverly Advisors, LLC | 0.00% | No change | 55,556 | $36K |
| Stifel Financial Corp. | 0.00% | No change | 48,000 | $31K |
| Bank of America Corp. | 0.00% | Add +0.0% | 38,706 | $25K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -40.6% | 35,952 | $23K |
| XTX Topco Ltd | 0.00% | New | 29,682 | $19K |
| EP Wealth Advisors, LLC | 0.00% | — | 28,000 | $18K |
| Compound Planning, Inc. | 0.00% | No change | 27,443 | $18K |
| Kestra Advisory Services, LLC | 0.00% | Reduce -60.2% | 25,700 | $16K |
| LPL Financial LLC | 0.00% | Add +54.7% | 23,066 | $15K |
| Creative Planning | 0.00% | Reduce -0.8% | 21,295 | $14K |
| Seelaus Asset Management LLC | 0.01% | No change | 17,300 | $11K |
| Merit Financial Group, LLC | 0.00% | No change | 15,297 | $10K |
| First National Bank of Omaha | 0.00% | New | 15,225 | $10K |
| Texas Capital Bank Wealth Management Services Inc | 0.00% | New | 11,000 | $7K |
| Virtu Financial LLC | 0.00% | New | 10,780 | $7K |
| Millennium Management | 0.00% | New | 10,205 | $7K |
| Comerica Bank | 0.00% | Add +23.0% | 4,376 | $3K |
| Rockefeller Capital Management L.P. | 0.00% | Add +156.6% | 2,566 | $2K |
| Global Retirement Partners, LLC | 0.00% | New | 2,265 | $1K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -61.3% | 2,170 | $1K |
| Wells Fargo & Company | 0.00% | No change | 730 | $467 |
| FMR LLC | 0.00% | New | 384 | $245 |
| JPMorgan Chase & Co. | 0.00% | No change | 372 | $238 |
| Your Advocates Ltd., LLP | 0.00% | No change | 250 | $160 |
| MAI Capital Management | 0.00% | No change | 233 | $149 |
| Jones Financial Companies LLLP | 0.00% | Reduce -84.3% | 93 | $59 |
| Medallion Wealth Advisors, LLC | 0.00% | No change | 45 | $29 |
| PNC Financial Services Group, Inc. | 0.00% | No change | 31 | $20 |
| BNP Paribas Financial Markets | 0.00% | No change | 20 | $13 |
"% of holder's portfolio" is CTSO's weight in each manager's 13F, not the share of Cytosorbents Corp. the manager owns.