CTSO Institutional Ownership & Shareholders
CYTOSORBENTS CORP (CTSO) is currently held by 40 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $5.59M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Avenir Corp is currently the largest disclosed institutional shareholder of CTSO tracked by InsiderSet, reporting ownership valued at approximately $1.94M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $31.19M, representing an estimated gain of +1506.95% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 91% of the total disclosed CTSO value among the investors covered in this analysis. Major shareholders include Avenir Corp, Neuberger Berman Group Llc, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in CYTOSORBENTS CORP (CTSO).
This page ranks the largest institutional CTSO shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
40
Total Reported Value
$5.59M
Largest Holder
Avenir Corp
Largest Position
$1.94M
Insider Transactions (90d)
7
Latest Filing Quarter
Q2 2026
New Institutional Positions
60
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Avenir Corp | 0.24% | 5,189,218 | $1,940,768 | $31,187,200 | +$29,246,432 | +1506.95% | |
| Neuberger Berman Group Llc | 0.00% | 1,968,691 | $740,516 | $11,831,833 | +$11,091,317 | +1497.78% | |
| Vanguard Capital Management Llc | 0.00% | 1,914,063 | $715,860 | $11,503,519 | +$10,787,659 | +1506.95% | |
| Cm Management, Llc | 0.35% | 1,476,500 | $552,211 | $8,873,765 | +$8,321,554 | +1506.95% | |
| Pathstone Holdings, Llc | 0.00% | 499,955 | $283,124 | $3,004,730 | +$2,721,606 | +961.28% | |
| Blackrock, Inc. | 0.00% | 627,211 | $234,577 | $3,769,538 | +$3,534,961 | +1506.95% | |
| Geode Capital Management, Llc | 0.00% | 602,059 | $225,239 | $3,618,375 | +$3,393,136 | +1506.46% | |
| Sargent Investment Group, Llc | 0.02% | 555,757 | $207,853 | $3,340,100 | +$3,132,247 | +1506.95% | |
| Vanguard Fiduciary Trust Co | 0.00% | 316,167 | $118,246 | $1,900,164 | +$1,781,918 | +1506.96% | |
| Cibc Bancorp Usa Inc. | 0.00% | 172,649 | $64,571 | $1,037,620 | +$973,049 | +1506.95% | |
| State Street Corp | 0.00% | 159,293 | $59,576 | $957,351 | +$897,775 | +1506.94% | |
| Osaic Holdings, Inc. | 0.00% | 134,839 | $49,991 | $810,382 | +$760,391 | +1521.06% | |
| Ubs Group Ag | 0.00% | 131,019 | $49,001 | $787,424 | +$738,423 | +1506.96% | |
| Northern Trust Corp | 0.00% | 111,660 | $41,761 | $671,077 | +$629,316 | +1506.95% | |
| Raymond James Financial Inc | 0.00% | 107,611 | $40,247 | $646,742 | +$606,495 | +1506.93% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 100,020 | $37,407 | $601,120 | +$563,713 | +1506.97% |
| Morgan Stanley | 0.00% | 91,338 | $34,160 | $548,941 | +$514,781 | +1506.97% | |
| Virtu Financial Llc | 0.00% | 71,508 | $27,000 | $429,763 | +$402,763 | +1491.72% | |
| Xtx Topco Ltd | 0.00% | 54,316 | $20,314 | $326,439 | +$306,125 | +1506.97% | |
| Jane Street Group, Llc | 0.00% | 52,205 | $19,525 | $313,752 | +$294,227 | +1506.92% | |
| Lpl Financial Llc | 0.00% | 50,119 | $18,744 | $301,215 | +$282,471 | +1507.00% | |
| Stifel Financial Corp | 0.00% | 48,000 | $17,952 | $288,480 | +$270,528 | +1506.95% | |
| Bank Of America Corp | 0.00% | 38,686 | $14,468 | $232,503 | +$218,035 | +1507.01% | |
| Hrt Financial Lp | 0.00% | 32,125 | $12,000 | $193,071 | +$181,071 | +1508.93% | |
| Kestra Advisory Services, Llc | 0.00% | 28,200 | $10,547 | $169,482 | +$158,935 | +1506.92% | |
| Ep Wealth Advisors, Llc | 0.00% | 28,000 | $10,472 | $168,280 | +$157,808 | +1506.95% | |
| Ritholtz Wealth Management | 0.00% | 27,443 | $10,264 | $164,932 | +$154,668 | +1506.90% | |
| Sfmg, Llc | 0.00% | 20,000 | $7,480 | $120,200 | +$112,720 | +1506.95% | |
| First National Bank Of Omaha | 0.00% | 15,225 | $5,811 | $91,502 | +$85,691 | +1474.64% | |
| Goldman Sachs Group Inc | 0.00% | 15,338 | $5,736 | $92,181 | +$86,445 | +1507.07% | |
| Merit Financial Group, Llc | 0.00% | 15,297 | $5,721 | $91,935 | +$86,214 | +1506.97% | |
| Vanguard Global Advisers, Llc | 0.00% | 13,865 | $5,186 | $83,329 | +$78,143 | +1506.80% | |
| Tower Research Capital Llc (Trc) | 0.00% | 10,223 | $3,823 | $61,440 | +$57,617 | +1507.12% | |
| Fifth Third Bancorp | 0.00% | 3,090 | $1,155 | $18,571 | +$17,416 | +1507.87% | |
| Rockefeller Capital Management L.P. | 0.00% | 1,652 | $618 | $9,929 | +$9,311 | +1506.56% | |
| Jpmorgan Chase & Co | 0.00% | 372 | $142 | $2,236 | +$2,094 | +1474.45% | |
| Barclays Plc | 0.00% | 287 | $107 | $1,725 | +$1,618 | +1512.03% | |
| Wells Fargo & Company/Mn | 0.00% | 250 | $94 | $1,503 | +$1,409 | +1498.40% | |
| Pnc Financial Services Group, Inc. | 0.00% | 31 | $12 | $186 | +$174 | +1452.58% | |
| Bnp Paribas Financial Markets | 0.00% | 3 | $1 | $18 | +$17 | +1703.00% |
Frequently asked questions about CTSO
Who are the largest institutional holders of CTSO?
The largest institutional holders of CTSO reported in the latest SEC Form 13F filings include Avenir Corp, Neuberger Berman Group Llc, Vanguard Capital Management Llc, Cm Management, Llc, and Pathstone Holdings, Llc. InsiderSet ranks institutional holders by their latest reported CTSO position.
What is CTSO institutional ownership?
This page tracks CTSO positions reported by institutional investment managers through SEC Form 13F. CYTOSORBENTS CORP (CTSO) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own CTSO?
InsiderSet currently tracks 40 institutional managers reporting CTSO holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of CTSO shareholders.
How much CTSO stock do institutions own?
Institutional investment managers disclosed approximately $5.59M in CTSO holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was CTSO institutional ownership last updated?
The latest CTSO institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional CTSO holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its CTSO position after the reporting date.
Are institutions buying or selling CTSO?
Institutional buying and selling can be analyzed by comparing CTSO positions across consecutive 13F reporting periods. InsiderSet's CTSO Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View CTSO ownership changes.
How has CTSO institutional ownership changed over time?
InsiderSet tracks CTSO institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.