CYTOSORBENTS CORP (CTSO) Institutional Ownership Changes & 13F Activity
CYTOSORBENTS CORP (CTSO). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Vanguard Capital Management Llc, Vanguard Fiduciary Trust Co, Cibc Bancorp Usa Inc., Skylands Capital, Llc, and Citadel Advisors Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Wells Fargo & Company/Mn | Sell | -480 | -65.8% | 250 | $142.00 | Q1 2026 | Jul 08, 2026 |
| Bank Of America Corp | Buy | +417 | +1.1% | 39,123 | $22.14K | Q1 2026 | May 18, 2026 |
| Citadel Advisors Llc | Sell | -138,480 | -92.8% | 10,799 | $6.12K | Q1 2026 | May 15, 2026 |
| Geode Capital Management, Llc | Buy | +103,495 | +17.1% | 707,262 | $400.62K | Q1 2026 | May 15, 2026 |
| Susquehanna International Group, Llp | Sell | -53,418 | -64.1% | 29,945 | $16.96K | Q1 2026 | May 15, 2026 |
| Morgan Stanley | Sell | -16,311 | -14.0% | 100,169 | $56.73K | Q1 2026 | May 15, 2026 |
| Goldman Sachs Group Inc | Buy | +7,995 | +22.2% | 43,947 | $24.89K | Q1 2026 | May 15, 2026 |
| Xtx Topco Ltd | Buy | +5,888 | +19.8% | 35,570 | $20.14K | Q1 2026 | May 15, 2026 |
| Neuberger Berman Group Llc | Buy | +57,367 | +3.5% | 1,683,007 | $950.78K | Q1 2026 | May 14, 2026 |
| Avenir Corp | Sell | -14,323 | -0.3% | 5,215,776 | $2.95M | Q1 2026 | May 14, 2026 |
| Hrt Financial Lp | Buy | +14,113 | — | 14,113 | $7.00K | Q1 2026 | May 14, 2026 |
| Marathon Capital Management | Buy | +10,000 | — | 10,000 | $5.66K | Q1 2026 | May 14, 2026 |
| Raymond James Financial Inc | Sell | -951 | -0.9% | 107,751 | $61.02K | Q1 2026 | May 14, 2026 |
| Rockefeller Capital Management L.P. | Sell | -705 | -27.5% | 1,861 | $1.05K | Q1 2026 | May 14, 2026 |
| Renaissance Technologies LLC | Buy | +600 | +0.6% | 100,720 | $57.04K | Q1 2026 | May 14, 2026 |
| Blackrock, Inc. | Buy | +12,441 | +1.6% | 782,992 | $443.41K | Q1 2026 | May 13, 2026 |
| Cibc Bancorp Usa Inc. | Buy | +172,649 | — | 172,649 | $97.77K | Q1 2026 | May 12, 2026 |
| Bnp Paribas Financial Markets | Sell | -3 | -15.0% | 17 | $10.00 | Q1 2026 | May 12, 2026 |
| Sargent Investment Group, Llc | Sell | -62,100 | -10.1% | 549,900 | $311.41K | Q1 2026 | May 11, 2026 |
| Vanguard Capital Management Llc | Buy | +1,879,989 | — | 1,879,989 | $1.06M | Q1 2026 | May 08, 2026 |
| Vanguard Fiduciary Trust Co | Buy | +313,856 | — | 313,856 | $177.64K | Q1 2026 | May 08, 2026 |
| Vanguard Global Advisers, Llc | Buy | +13,865 | — | 13,865 | $7.85K | Q1 2026 | May 08, 2026 |
| Lpl Financial Llc | Buy | +119 | +0.5% | 23,185 | $13.13K | Q1 2026 | May 06, 2026 |
| Ubs Group Ag | Sell | -72 | -0.1% | 115,200 | $65.20K | Q1 2026 | May 05, 2026 |
| Fifth Third Bancorp | Buy | +3,082 | — | 3,082 | $1.75K | Q1 2026 | May 01, 2026 |
| Kestra Advisory Services, Llc | Buy | +2,500 | +9.7% | 28,200 | $15.97K | Q1 2026 | Apr 30, 2026 |
| Seelaus Asset Management Llc | Sell | -1,000 | -5.8% | 16,300 | $9.23K | Q1 2026 | Apr 29, 2026 |
| Sbi Securities Co., Ltd. | Buy | +1 | — | 1 | $1.00 | Q1 2026 | Apr 28, 2026 |
| Medallion Wealth Advisors, Llc | Sell | -45 | -100.0% | 0 | $0.00 | Q1 2026 | Apr 24, 2026 |
| Skylands Capital, Llc | Sell | -147,017 | -7.9% | 1,707,498 | $966.96K | Q1 2026 | Apr 22, 2026 |
Frequently asked questions about CTSO activity
Which institutional owners are buying CTSO?
Institutional owners buying CTSO include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in CTSO activity?
"Buy" means an investor increased their reported position in CTSO compared to the prior reporting period. This reflects growing exposure to CYTOSORBENTS CORP (CTSO) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in CTSO increasing?
Institutional interest in CTSO can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related CTSO Institutional Insights
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