Cytosorbents Corp. 13F holders
47 funds reported a position in Cytosorbents Corp. in their 13F for the quarter ended 30 June 2026, together 849,318 shares worth $6.0 million. Against the quarter before, 6 opened a position, 11 added, 12 trimmed and 7 sold out; together they sold a net 17,708 shares. The largest holders: Avenir Corp., Neuberger Berman Group LLC and Vanguard Capital Management LLC.
Funds holding47-3 on Q1 2026
Shares they held849,318worth $6.0 million
Net sold on the quarter17,708 sharesabout $125,921 at the funds' values
Funds buying to selling17 to 19opened or added, to cut or sold
Opened 6Added 11Held 20Trimmed 12Sold out 7
What each fund did in CTSO against its 13F for the quarter before; a change under 0.1% of a holding counts as held
Funds reporting a position in CTSO in their 13F, each quarter; hover a bar for the shares they held
Filed so far for the quarter to 30 September 2026
3,405 funds have filed their 13F for the quarter so far; the rest are due by 16 November 2026. Of those, 2 reported a position in Cytosorbents Corp.: 0 opened one, 1 added, 1 trimmed and 5 sold out, a net 35,218 shares sold.
| Fund | Change in shares | Shares now | Status | Filing |
|---|---|---|---|---|
| Skylands Capital, LLC | -24,232 | 39,526 | trimmed | 13F |
| Farther Finance Advisors, LLC | +9 | 9 | added | 13F |
| Key Client Fiduciary Advisors, LLC | -4,129 | 0 | sold out | 13F |
| Marathon Capital Management | -526 | 0 | sold out | 13F |
| NWF Advisory Services Inc. | -5,481 | 0 | sold out | 13F |
| SBI Securities Co., Ltd. | +0 | 0 | sold out | 13F |
| Seelaus Asset Management LLC | -858 | 0 | sold out | 13F |
The largest moves in the name among the funds that have filed, against each fund's previous 13F.
The well-known funds
Of the 44 funds followed here, 2 reported a position in Cytosorbents Corp. in a 13F for the quarter ended 30 June 2026. The largest: Geode Capital Management, 31,687 shares worth $225,239, 0.0% of its reported book. Sold out: Citadel Advisors. In the quarter, 0 funds added or opened a position and 3 trimmed or sold out; together they sold a net 6,142 shares, about $43,653 at the funds' own value per share on 30 June 2026. A change under 0.1% of a holding counts as held.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Geode Capital Management | 31,687 | $225,239 | 0.0% | -5,537 | trimmed | 30 June 2026 | 13F |
| Renaissance Technologies | 5,264 | $37,407 | 0.0% | -37 | trimmed | 30 June 2026 | 13F |
| Citadel Advisors | 0 | $0 | 0.0% | -568 | exited | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.The largest holders
| Fund | Shares | Share of all | Value | Of its book | Change in shares | Filing |
|---|---|---|---|---|---|---|
| Avenir Corp. | 273,117 | 32.16% | $1.9 million | 0.24% | -1,398 | 13F |
| Neuberger Berman Group LLC | 103,615 | 12.20% | $740,516 | 0.00% | +15,036 | 13F |
| Vanguard Capital Management LLC | 100,740 | 11.86% | $715,860 | 0.00% | +1,793 | 13F |
| CM Management, LLC | 77,711 | 9.15% | $552,211 | 0.35% | no change | 13F |
| Skylands Capital, LLC | 63,758 | 7.51% | $453,064 | 0.06% | -26,110 | 13F |
| BlackRock, Inc. | 33,011 | 3.89% | $234,577 | 0.00% | -8,199 | 13F |
| Geode Capital Management, LLC | 31,687 | 3.73% | $225,239 | 0.00% | -5,537 | 13F |
| Sargent Investment Group, LLC | 29,250 | 3.44% | $207,853 | 0.03% | +308 | 13F |
| Pathstone Holdings, LLC | 26,311 | 3.10% | $186,966 | 0.00% | -2 | 13F |
| Vanguard Fiduciary Trust Co. | 16,640 | 1.96% | $118,246 | 0.00% | +122 | 13F |
| CIBC Bancorp USA Inc. | 9,087 | 1.07% | $64,571 | 0.00% | no change | 13F |
| State Street Corp. | 8,384 | 0.99% | $59,576 | 0.00% | no change | 13F |
| Osaic Holdings, Inc. | 7,097 | 0.84% | $49,991 | 0.00% | +233 | 13F |
| UBS Group AG | 6,896 | 0.81% | $49,001 | 0.00% | +833 | 13F |
| Northern Trust Corp. | 5,877 | 0.69% | $41,761 | 0.00% | +1,006 | 13F |
| Raymond James Financial Inc. | 5,664 | 0.67% | $40,247 | 0.00% | -7 | 13F |
| NWF Advisory Services Inc. | 5,481 | 0.65% | $38,947 | 0.00% | no change | 13F |
| Renaissance Technologies LLC | 5,264 | 0.62% | $37,407 | 0.00% | -37 | 13F |
| Morgan Stanley | 4,807 | 0.57% | $34,160 | 0.00% | -465 | 13F |
| Key Client Fiduciary Advisors, LLC | 4,129 | 0.49% | $29,343 | 0.01% | no change | 13F |
| Virtu Financial LLC | 3,764 | 0.44% | $27,000 | 0.00% | new | 13F |
| XTX Topco Ltd | 2,859 | 0.34% | $20,314 | 0.00% | +987 | 13F |
| Jane Street Group, LLC | 2,748 | 0.32% | $19,525 | 0.00% | new | 13F |
| LPL Financial LLC | 2,638 | 0.31% | $18,744 | 0.00% | +1,418 | 13F |
| Stifel Financial Corp. | 2,526 | 0.30% | $17,952 | 0.00% | no change | 13F |
| Bank of America Corp. | 2,036 | 0.24% | $14,468 | 0.00% | -23 | 13F |
| HRT Financial LP | 1,691 | 0.20% | $12,000 | 0.00% | +948 | 13F |
| Kestra Advisory Services, LLC | 1,484 | 0.17% | $10,547 | 0.00% | no change | 13F |
| EP Wealth Advisors, LLC | 1,474 | 0.17% | $10,472 | 0.00% | no change | 13F |
| Ritholtz Wealth Management | 1,444 | 0.17% | $10,264 | 0.00% | no change | 13F |
| Sfmg, LLC | 1,053 | 0.12% | $7,480 | 0.00% | new | 13F |
| Creative Planning | 998 | 0.12% | $7,090 | 0.00% | -123 | 13F |
| Seelaus Asset Management LLC | 858 | 0.10% | $6,096 | 0.00% | no change | 13F |
| First National Bank of Omaha | 801 | 0.09% | $5,811 | 0.00% | no change | 13F |
| Goldman Sachs Group Inc. | 807 | 0.10% | $5,736 | 0.00% | -1,506 | 13F |
| Merit Financial Group, LLC | 805 | 0.09% | $5,721 | 0.00% | no change | 13F |
| Vanguard Global Advisers, LLC | 730 | 0.09% | $5,186 | 0.00% | no change | 13F |
| Northwestern Mutual Wealth Management Co. | 588 | 0.07% | $4,180 | 0.00% | new | 13F |
| Tower Research Capital LLC (TRC) | 538 | 0.06% | $3,823 | 0.00% | new | 13F |
| Marathon Capital Management | 526 | 0.06% | $3,740 | 0.00% | no change | 13F |
| Fifth Third Bancorp | 163 | 0.02% | $1,155 | 0.00% | no change | 13F |
| Global Retirement Partners, LLC | 124 | 0.01% | $882 | 0.00% | first 13F | 13F |
| Rockefeller Capital Management L.P. | 87 | 0.01% | $618 | 0.00% | -11 | 13F |
| JPMorgan Chase & Co. | 20 | 0.00% | $142 | 0.00% | no change | 13F |
| Barclays PLC | 15 | 0.00% | $107 | 0.00% | new | 13F |
| Wells Fargo & Company | 13 | 0.00% | $94 | 0.00% | no change | 13F |
| PNC Financial Services Group, Inc. | 2 | 0.00% | $12 | 0.00% | no change | 13F |
| Farther Finance Advisors, LLC | 0 | 0.00% | $2 | 0.00% | no change | 13F |
| BNP Paribas Financial Markets | 0 | 0.00% | $1 | 0.00% | -1 | 13F |
| Citadel Advisors LLC | 0 | 0.00% | $0 | 0.00% | sold out | 13F |
The 50 largest of the 47 funds that reported a position in CTSO in their 13F for the quarter ended 30 June 2026, by the value each reported.
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Share of all is the fund's part of all the shares the funds reported. Change is shares against the fund's 13F for the quarter before. A 13F lists a manager's long positions in US-listed shares at the quarter's end. CTSO changed its CUSIP in the period, and shares a fund reported under the earlier one are counted on today's basis. What is a 13F?Options the funds reported on CTSO
| Fund | Option | Shares under the options | Value of those shares | Quarter ended | Filing |
|---|---|---|---|---|---|
| Citadel Advisors | Calls | 758 | $5,386 | 30 June 2026 | 13F |
A 13F lists calls and puts by the shares they cover and what those shares were worth at the quarter's end, not what the options cost.
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They are not counted in the holdings above. A put gains when the stock falls, a call when it rises, and a fund may hold either to hedge.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 13 February 2026 | 13G/A | Avenir Corp and 3 others | 5.2 million | 8.3% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short. 13D and 13GFails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 26 August 2026 | 2,737 | $0.36 | SEC |
| 14 August 2026 | 3,929 | $0.36 | SEC |
| 29 July 2026 | 1 | $0.37 | SEC |
| 28 July 2026 | 78 | $0.36 | SEC |
| 23 July 2026 | 7,838 | $0.38 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.