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.
13F holders, Q1 2026
Institutional positions in Cytosorbents Corp as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 50
- +3 vs. Q4 2025
- Shares held
- 16.5M
- +1.99M (+13.8%) vs. Q4 2025
- Total value
- $9.32M
- +$67.7K (+0.7%) vs. Q4 2025
- New holders
- 10
- 9 more added
- Sold out
- 7
- 12 more reduced
4 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting CTSO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 50 | $6.04M |
| Q1 2026 | 50 | $9.32M |
| Q4 2025 | 51 | $10.8M |
| Q3 2025 | 49 | $15.3M |
| Q2 2025 | 45 | $20.7M |
| Q1 2025 | 49 | $16.9M |
| Q4 2024 | 51 | $14.1M |
| Q3 2024 | 53 | $24.7M |
| Q2 2024 | 50 | $11.8M |
| Q1 2024 | 50 | $16.7M |
| Q4 2023 | 54 | $20.0M |
| Q3 2023 | 53 | $28.7M |
| Q2 2023 | 58 | $54.7M |
| Q1 2023 | 59 | $51.3M |
| Q4 2022 | 53 | $22.7M |
| Q3 2022 | 60 | $20.7M |
| Q2 2022 | 78 | $33.9M |
| Q1 2022 | 88 | $57.3M |
| Q4 2021 | 91 | $74.6M |
| Q3 2021 | 96 | $149.2M |
| Q2 2021 | 102 | $132.4M |
| Q1 2021 | 96 | $151.6M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Cytosorbents Corp; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Avenir Corp | 5,215,776 | $2.95M | 0.36% | −14,323−0.3% | Reduced |
| Vanguard Capital Management LLC | 1,879,989 | $1.06M | 0.00% | +1,879,989 | New |
| Skylands Capital, LLC | 1,707,498 | $967.0K | 0.13% | −147,017−7.9% | Reduced |
| Neuberger Berman Group LLC | 1,683,007 | $950.8K | 0.00% | +57,367+3.5% | Added |
| CM Management, LLC | 1,476,500 | $836.1K | 0.70% | 00.0% | Unchanged |
| BlackRock, Inc. | 782,992 | $443.4K | 0.00% | +12,441+1.6% | Added |
| Geode Capital Management, LLC | 707,262 | $400.6K | 0.00% | +103,495+17.1% | Added |
| Sargent Investment Group, LLC | 549,900 | $311.4K | 0.04% | −62,100−10.1% | Reduced |
| Pathstone Holdings, LLC | 499,955 | $283.1K | 0.00% | 00.0% | Unchanged |
| Vanguard Fiduciary Trust Co | 313,856 | $177.6K | 0.00% | +313,856 | New |
| CIBC Bancorp USA Inc. | 172,649 | $97.8K | 0.00% | +172,649 | New |
| State Street Corp | 159,293 | $90.2K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 130,419 | $74.2K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 115,200 | $65.2K | 0.00% | −72−0.1% | Reduced |
| Raymond James Financial Inc | 107,751 | $61.0K | 0.00% | −951−0.9% | Reduced |
| NWF Advisory Services Inc. | 104,139 | $59.0K | 0.01% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 100,720 | $57.0K | 0.00% | +600+0.6% | Added |
| Morgan Stanley | 100,169 | $56.7K | 0.00% | −16,311−14.0% | Reduced |
| Northern Trust Corp | 92,540 | $52.4K | 0.00% | 00.0% | Unchanged |
| Key Client Fiduciary Advisors, LLC | 78,457 | $44.4K | 0.02% | 00.0% | Unchanged |
| Warren Averett Asset Management, LLC | 55,556 | $31.5K | 0.00% | 00.0% | Unchanged |
| Stifel Financial Corp | 48,000 | $27.2K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 43,947 | $24.9K | 0.00% | +7,995+22.2% | Added |
| Bank of America Corp | 39,123 | $22.1K | 0.00% | +417+1.1% | Added |
| XTX Topco Ltd | 35,570 | $20.1K | 0.00% | +5,888+19.8% | Added |
| Susquehanna International Group, LLP | 29,945 | $17.0K | 0.00% | −53,418−64.1% | Reduced |
| Kestra Advisory Services, LLC | 28,200 | $16.0K | 0.00% | +2,500+9.7% | Added |
| EP Wealth Advisors, LLC | 28,000 | $15.9K | 0.00% | 00.0% | Unchanged |
| Ritholtz Wealth Management | 27,443 | $15.5K | 0.00% | +27,443 | New |
| LPL Financial LLC | 23,185 | $13.1K | 0.00% | +119+0.5% | Added |
| Creative Planning | 21,295 | $12.1K | 0.00% | 00.0% | Unchanged |
| Seelaus Asset Management LLC | 16,300 | $9.23K | 0.01% | −1,000−5.8% | Reduced |
| Merit Financial Group, LLC | 15,297 | $8.66K | 0.00% | 00.0% | Unchanged |
| First National Bank of Omaha | 15,225 | $8.52K | 0.00% | 00.0% | Unchanged |
| Vanguard Global Advisers, LLC | 13,865 | $7.85K | 0.00% | +13,865 | New |
| HRT Financial LP | 14,113 | $7.00K | 0.00% | +14,113 | New |
| Texas Capital Bank Wealth Management Services Inc | 11,000 | $6.23K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 10,799 | $6.12K | 0.00% | −138,480−92.8% | Reduced |
| Marathon Capital Management | 10,000 | $5.66K | 0.00% | +10,000 | New |
| Fifth Third Bancorp | 3,082 | $1.75K | 0.00% | +3,082 | New |
| Rockefeller Capital Management L.P. | 1,861 | $1.05K | 0.00% | −705−27.5% | Reduced |
| JPMorgan Chase & Co | 372 | $208 | 0.00% | 00.0% | Unchanged |
| Your Advocates Ltd., LLP | 250 | $143 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 250 | $142 | 0.00% | −480−65.8% | Reduced |
| MAI Capital Management | 233 | $132 | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 93 | $55 | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 31 | $18 | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 17 | $10 | 0.00% | −3−15.0% | Reduced |
| Farther Finance Advisors, LLC | 6 | $3 | 0.00% | +6 | New |
| SBI Securities Co., Ltd. | 1 | $1 | 0.00% | +1 | New |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −148,374−100.0% | Sold out |
| Atomi Financial Group, Inc. | 0 | $0 | 0.00% | −27,443−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −10,780−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −10,205−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −2,170−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −384−100.0% | Sold out |
| Medallion Wealth Advisors, LLC | 0 | $0 | 0.00% | −45−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |