CytosorbentsCTSO
13F holders, Q3 2025 (September 30)At the end of Q3 2025, 49 institutions reported holding Cytosorbents Corp. (CTSO) in their 13F filings, up 4 from Q2 2025. 8 opened new positions and 3 sold out. The largest holders were Avenir Corp. ($4.7M), Vanguard Group Inc. ($2.1M) and Skylands Capital, LLC ($2.0M). 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 Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 8 | $258K |
| Exits | 3 | $18K |
All 13F filers, Q2 2025 → Q3 2025: 484,659 shares bought and 560,921 shares sold, net −76,262 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 49 holders
| Avenir Corp. | 0.49% | Add +0.5% | 5,082,838 | $4.7M |
| Vanguard Group Inc. | 0.00% | Add +3.7% | 2,204,294 | $2.1M |
| Skylands Capital, LLC | 0.27% | Reduce -18.7% | 2,127,265 | $2.0M |
| Neuberger Berman Group LLC | 0.00% | Add +0.4% | 1,597,998 | $1.5M |
| CM Management, LLC | 1.00% | Add +3.0% | 1,288,128 | $1.2M |
| BlackRock, Inc. | 0.00% | Add +2.6% | 764,809 | $714K |
| Sargent Investment Group, LLC | 0.10% | Reduce -1.0% | 738,700 | $690K |
| Geode Capital Management, LLC | 0.00% | No change | 601,451 | $562K |
| CIBC Private Wealth Group LLC | 0.00% | No change | 172,649 | $161K |
| State Street Corp. | 0.00% | No change | 159,293 | $149K |
| Renaissance Technologies | 0.00% | Add +15.6% | 134,805 | $126K |
| Osaic Holdings, Inc. | 0.00% | No change | 130,419 | $122K |
| UBS Group AG | 0.00% | Reduce -5.8% | 115,203 | $108K |
| Gsa Capital Partners LLP | 0.01% | New | 112,217 | $105K |
| Raymond James Financial Inc. | 0.00% | Add +0.1% | 108,721 | $102K |
| Morgan Stanley | 0.00% | Add +1.8% | 107,256 | $100K |
| NWF Advisory Services Inc. | 0.01% | No change | 104,139 | $97K |
| Susquehanna International Group, LLP | 0.00% | Reduce -25.5% | 98,221 | $92K |
| Northern Trust Corp. | 0.00% | No change | 91,560 | $86K |
| Key Client Fiduciary Advisors, LLC | 0.02% | No change | 78,457 | $73K |
| Citadel Advisors | 0.00% | New | 65,690 | $61K |
| Kestra Advisory Services, LLC | 0.00% | Reduce -9.0% | 64,528 | $60K |
| Goldman Sachs Group Inc. | 0.00% | Add +29.4% | 60,552 | $57K |
| Waverly Advisors, LLC | 0.00% | New | 55,556 | $52K |
| Stifel Financial Corp. | 0.00% | No change | 48,000 | $45K |
| Bank of America Corp. | 0.00% | Reduce -0.9% | 38,703 | $36K |
| Compound Planning, Inc. | 0.00% | No change | 27,443 | $26K |
| Creative Planning | 0.00% | Reduce -3.0% | 21,455 | $20K |
| Sei Investments Co. | 0.00% | Reduce -1.1% | 17,734 | $17K |
| Seelaus Asset Management LLC | 0.01% | Reduce -5.5% | 17,300 | $16K |
| Two Sigma Securities, LLC | 0.00% | New | 15,737 | $15K |
| Merit Financial Group, LLC | 0.00% | No change | 15,297 | $14K |
| Country Club Bank | 0.00% | No change | 15,225 | $14K |
| LPL Financial LLC | 0.00% | New | 14,906 | $14K |
| Chicago Partners Investment Group LLC | 0.00% | Add +15.7% | 14,209 | $12K |
| Centiva Capital, LP | 0.00% | New | 10,737 | $10K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +264.6% | 5,607 | $5K |
| Comerica Bank | 0.00% | Add +18.6% | 3,557 | $3K |
| Royal Bank of Canada | 0.00% | Add +37.5% | 1,100 | $1K |
| Rockefeller Capital Management L.P. | 0.00% | New | 1,000 | $934 |
| Wells Fargo & Company | 0.00% | No change | 730 | $682 |
| Jones Financial Companies LLLP | 0.00% | New | 593 | $553 |
| JPMorgan Chase & Co. | 0.00% | No change | 372 | $347 |
| Your Advocates Ltd., LLP | 0.00% | No change | 250 | $233 |
| MAI Capital Management | 0.00% | No change | 233 | $218 |
| Medallion Wealth Advisors, LLC | 0.00% | No change | 45 | $42 |
| PNC Financial Services Group, Inc. | 0.00% | No change | 31 | $29 |
| BNP Paribas Financial Markets | 0.00% | No change | 20 | $19 |
| SBI Securities Co., Ltd. | 0.00% | Reduce -99.0% | 1 | $1 |
"% of holder's portfolio" is CTSO's weight in each manager's 13F, not the share of Cytosorbents Corp. the manager owns.