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 |
|---|---|---|---|---|---|
| SBI Securities Co., Ltd. | 1 | $1 | 0.00% | +1 | New |
| Farther Finance Advisors, LLC | 6 | $3 | 0.00% | +6 | New |
| BNP Paribas Arbitrage, SA | 17 | $10 | 0.00% | −3−15.0% | Reduced |
| The PNC Financial Services Group, Inc. | 31 | $18 | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 93 | $55 | 0.00% | 00.0% | Unchanged |
| MAI Capital Management | 233 | $132 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 250 | $142 | 0.00% | −480−65.8% | Reduced |
| Your Advocates Ltd., LLP | 250 | $143 | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 372 | $208 | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 1,861 | $1.05K | 0.00% | −705−27.5% | Reduced |
| Fifth Third Bancorp | 3,082 | $1.75K | 0.00% | +3,082 | New |
| Marathon Capital Management | 10,000 | $5.66K | 0.00% | +10,000 | New |
| Citadel Advisors LLC | 10,799 | $6.12K | 0.00% | −138,480−92.8% | Reduced |
| Texas Capital Bank Wealth Management Services Inc | 11,000 | $6.23K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 14,113 | $7.00K | 0.00% | +14,113 | New |
| Vanguard Global Advisers, LLC | 13,865 | $7.85K | 0.00% | +13,865 | New |
| First National Bank of Omaha | 15,225 | $8.52K | 0.00% | 00.0% | Unchanged |
| Merit Financial Group, LLC | 15,297 | $8.66K | 0.00% | 00.0% | Unchanged |
| Seelaus Asset Management LLC | 16,300 | $9.23K | 0.01% | −1,000−5.8% | Reduced |
| Creative Planning | 21,295 | $12.1K | 0.00% | 00.0% | Unchanged |
| LPL Financial LLC | 23,185 | $13.1K | 0.00% | +119+0.5% | Added |
| Ritholtz Wealth Management | 27,443 | $15.5K | 0.00% | +27,443 | New |
| EP Wealth Advisors, LLC | 28,000 | $15.9K | 0.00% | 00.0% | Unchanged |
| Kestra Advisory Services, LLC | 28,200 | $16.0K | 0.00% | +2,500+9.7% | Added |
| Susquehanna International Group, LLP | 29,945 | $17.0K | 0.00% | −53,418−64.1% | Reduced |
| XTX Topco Ltd | 35,570 | $20.1K | 0.00% | +5,888+19.8% | Added |
| Bank of America Corp | 39,123 | $22.1K | 0.00% | +417+1.1% | Added |
| Goldman Sachs Group Inc | 43,947 | $24.9K | 0.00% | +7,995+22.2% | Added |
| Stifel Financial Corp | 48,000 | $27.2K | 0.00% | 00.0% | Unchanged |
| Warren Averett Asset Management, LLC | 55,556 | $31.5K | 0.00% | 00.0% | Unchanged |
| Key Client Fiduciary Advisors, LLC | 78,457 | $44.4K | 0.02% | 00.0% | Unchanged |
| Northern Trust Corp | 92,540 | $52.4K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 100,169 | $56.7K | 0.00% | −16,311−14.0% | Reduced |
| Renaissance Technologies LLC | 100,720 | $57.0K | 0.00% | +600+0.6% | Added |
| NWF Advisory Services Inc. | 104,139 | $59.0K | 0.01% | 00.0% | Unchanged |
| Raymond James Financial Inc | 107,751 | $61.0K | 0.00% | −951−0.9% | Reduced |
| UBS Group AG | 115,200 | $65.2K | 0.00% | −72−0.1% | Reduced |
| Advisor Group Holdings, Inc. | 130,419 | $74.2K | 0.00% | 00.0% | Unchanged |
| State Street Corp | 159,293 | $90.2K | 0.00% | 00.0% | Unchanged |
| CIBC Bancorp USA Inc. | 172,649 | $97.8K | 0.00% | +172,649 | New |
| Vanguard Fiduciary Trust Co | 313,856 | $177.6K | 0.00% | +313,856 | New |
| Pathstone Holdings, LLC | 499,955 | $283.1K | 0.00% | 00.0% | Unchanged |
| Sargent Investment Group, LLC | 549,900 | $311.4K | 0.04% | −62,100−10.1% | Reduced |
| Geode Capital Management, LLC | 707,262 | $400.6K | 0.00% | +103,495+17.1% | Added |
| BlackRock, Inc. | 782,992 | $443.4K | 0.00% | +12,441+1.6% | Added |
| CM Management, LLC | 1,476,500 | $836.1K | 0.70% | 00.0% | Unchanged |
| Neuberger Berman Group LLC | 1,683,007 | $950.8K | 0.00% | +57,367+3.5% | Added |
| Skylands Capital, LLC | 1,707,498 | $967.0K | 0.13% | −147,017−7.9% | Reduced |
| Vanguard Capital Management LLC | 1,879,989 | $1.06M | 0.00% | +1,879,989 | New |
| Avenir Corp | 5,215,776 | $2.95M | 0.36% | −14,323−0.3% | Reduced |
| 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 |