Who owns Cytosorbents Corp?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of CTSO from SEC Form 13F filings across 51 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 51 institutions disclosed 16.1M shares of Cytosorbents Corp worth $6.0M — about 25.7% of shares outstanding; the largest disclosed holder is AVENIR CORP. Source: SEC Form 13F filings, parsed by EvidInvest.
51
13F holders
$6.0M
value, 2026 filers
25.7%
of shares outstanding (16.1M sh)
9
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of CTSO's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | AVENIR CORP | 5.2M | $1.9M | 0.2% | 8.3% | -0.5% |
| 2 | NEUBERGER BERMAN GROUP LLC | 2.0M | $740,516 | 0.0% | 3.1% | +17.0% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 1.9M | $715,860 | 0.0% | 3% | +1.8% |
| 4 | CM Management, LLC | 1.5M | $552,211 | 0.4% | 2.4% | 0.0% |
| 5 | Skylands Capital, LLC | 1.2M | $453,064 | 0.1% | 1.9% | -29.1% |
| 6 | BlackRock, Inc. | 627,211 | $234,577 | 0.0% | 1% | -19.9% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 602,059 | $225,239 | 0.0% | 1% | -14.9% |
| 8 | Sargent Investment Group, LLC | 555,757 | $207,853 | 0.0% | 0.9% | +1.1% |
| 9 | Pathstone Holdings, LLC | 499,910 | $186,966 | 0.0% | 0.8% | 0.0% |
| 10 | VANGUARD FIDUCIARY TRUST CO | 316,167 | $118,246 | 0.0% | 0.5% | +0.7% |
| 11 | CIBC Bancorp USA Inc. | 172,649 | $64,571 | 0.0% | 0.3% | 0.0% |
| 12 | STATE STREET CORP | 159,293 | $59,576 | 0.0% | 0.3% | 0.0% |
| 13 | OSAIC HOLDINGS, INC. | 134,839 | $49,991 | 0.0% | 0.2% | +3.4% |
| 14 | UBS Group AG | 131,019 | $49,001 | 0.0% | 0.2% | +13.7% |
| 15 | NORTHERN TRUST CORP | 111,660 | $41,761 | 0.0% | 0.2% | +20.7% |
| 16 | RAYMOND JAMES FINANCIAL INC | 107,611 | $40,247 | 0.0% | 0.2% | -0.1% |
| 17 | NWF Advisory Services Inc. | 104,139 | $38,947 | 0.0% | 0.2% | 0.0% |
| 18 | RENAISSANCE TECHNOLOGIES LLC | 100,020 | $37,407 | 0.0% | 0.2% | -0.7% |
| 19 | MORGAN STANLEY | 91,338 | $34,160 | 0.0% | 0.1% | -8.8% |
| 20 | Key Client Fiduciary Advisors, LLC | 78,457 | $29,343 | 0.0% | 0.1% | 0.0% |
| 21 | Virtu Financial LLCNEW | 71,508 | $27 | 0.0% | 0.1% | new |
| 22 | XTX Topco Ltd | 54,316 | $20,314 | 0.0% | 0.1% | +52.7% |
| 23 | JANE STREET GROUP, LLCNEW | 52,205 | $19,525 | 0.0% | 0.1% | new |
| 24 | LPL Financial LLC | 50,119 | $18,744 | 0.0% | 0.1% | +116.2% |
| 25 | STIFEL FINANCIAL CORP | 48,000 | $17,952 | 0.0% | 0.1% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.