CTSO Institutional Ownership
Who owns Cytosorbents Corp and what the big funds did with it last quarter, from every SEC 13F filing. 51 funds reported holding CTSO at Jun 30, 2026, together owning 25.7% of the company.
- ●18 buying vs 19 selling
- ▼Held by funds -0.5 pts
- ▲Funds holding +1
- ▼Superinvestors: 0 added, 2 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 51 | 50 | +2.0% |
| In funds' top 10 | 0 | 0 | – |
| 13F shares | 16.1M | 16.5M | −2.0% |
| Held by funds | 25.7% | 26.2% | −0.5 pts |
| New positions | 7 | 6 | +16.7% |
| Increased | 11 | 9 | +22.2% |
| Reduced | 12 | 11 | +9.1% |
| Sold out | 7 | 7 | 0.0% |
| Calls (shares) | 0 | 0 | – |
| Puts (shares) | 0 | 0 | – |
| Put/call ratio | – | – | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in CTSO
All superinvestors →
Who owns CTSO
share of fund held shares- Index and passive funds23.2%
- Active managers and hedge funds71.8%
- Banks and brokers4.9%
- Pensions, insurers and other0.0%
The top 10 holders own 89.0% of all CTSO shares that funds reported. Groups are our own grouping of filers by name.
Filed so far for Q3 2026
11 funds changed their position- Skylands Capital, LLCSold out−1.2M sh
- Skylands Capital, LLCNew+40K sh
- NWF Advisory Services Inc.Sold out−104K sh
- Key Client Fiduciary Advisors, LLCSold out−78K sh
- Kestra Advisory Services, LLCSold out−28K sh
🔒 Free account: see all 11.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Avenir Corp | 8.26% | 5.2M | $1.9M | −27K |
| 2 | Neuberger Berman Group LLC | 3.13% | 2M | $741K | +286K |
| 3 | Vanguard Capital Management LLC | 3.05% | 1.9M | $716K | +34K |
| 4 | CM Management, LLC | 2.35% | 1.5M | $552K | 0 |
| 5 | Skylands Capital, LLC | 1.93% | 1.2M | $453K | −496K |
| 6 | BlackRock, Inc. | 1.00% | 627K | $235K | −156K |
| 7 | Geode Capital Management, LLC | 0.96% | 602K | $225K | −105K |
| 8 | Sargent Investment Group, LLC | 0.88% | 556K | $208K | +5,857 |
| 9 | Pathstone Holdings, LLC | 0.80% | 500K | $187K | −45 |
| 10 | Vanguard Fiduciary Trust Co | 0.50% | 316K | $118K | +2,311 |
- Neuberger Berman Group LLC+286K sh+$107K
- Virtu Financial LLC+72K sh+$27K
- Jane Street Group, LLC+52K sh+$20K
- Vanguard Capital Management LLC+34K sh+$13K
- LPL Financial LLC+27K sh+$10K
- Sfmg, LLC+20K sh+$7K
- Northern Trust Corp+19K sh+$7K
- XTX Topco Ltd+19K sh+$7K
- Skylands Capital, LLC−496K sh−$186K
- BlackRock, Inc.−156K sh−$58K
- Geode Capital Management, LLC−105K sh−$39K
- Waverly Advisors, LLC−56K sh−$31K
- Susquehanna International Group, LLP−30K sh−$17K
- Goldman Sachs Group Inc−29K sh−$11K
- Avenir Corp−27K sh−$10K
- Texas Capital Bank Wealth Management Services Inc−11K sh−$6K
CTSO institutional ownership FAQ
Who owns the most CTSO stock?
In Q2 2026 13F filings the largest holder of CTSO was Avenir Corp, followed by Neuberger Berman Group LLC and Vanguard Capital Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of CTSO is owned by institutions?
Funds that file 13F reports held 25.7% of CTSO's shares at Jun 30, 2026, compared with 26.2% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying CTSO?
In Q2 2026, 18 funds bought CTSO (7 of them new positions) and 19 sold (7 sold out completely). Among well known investors, 0 added and 2 cut. Our fund sentiment for CTSO is neutral.
What is CTSO's institutional put/call ratio?
Too few option positions were reported for a meaningful ratio.
How current is this CTSO ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.