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.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Wells Fargo & Company/MnSell-480-65.8%250$142.00Q1 2026Jul 08, 2026
Bank Of America CorpBuy+417+1.1%39,123$22.14KQ1 2026May 18, 2026
Citadel Advisors LlcSell-138,480-92.8%10,799$6.12KQ1 2026May 15, 2026
Geode Capital Management, LlcBuy+103,495+17.1%707,262$400.62KQ1 2026May 15, 2026
Susquehanna International Group, LlpSell-53,418-64.1%29,945$16.96KQ1 2026May 15, 2026
Morgan StanleySell-16,311-14.0%100,169$56.73KQ1 2026May 15, 2026
Goldman Sachs Group IncBuy+7,995+22.2%43,947$24.89KQ1 2026May 15, 2026
Xtx Topco LtdBuy+5,888+19.8%35,570$20.14KQ1 2026May 15, 2026
Neuberger Berman Group LlcBuy+57,367+3.5%1,683,007$950.78KQ1 2026May 14, 2026
Avenir CorpSell-14,323-0.3%5,215,776$2.95MQ1 2026May 14, 2026
Hrt Financial LpBuy+14,113—14,113$7.00KQ1 2026May 14, 2026
Marathon Capital ManagementBuy+10,000—10,000$5.66KQ1 2026May 14, 2026
Raymond James Financial IncSell-951-0.9%107,751$61.02KQ1 2026May 14, 2026
Rockefeller Capital Management L.P.Sell-705-27.5%1,861$1.05KQ1 2026May 14, 2026
Renaissance Technologies LLCBuy+600+0.6%100,720$57.04KQ1 2026May 14, 2026
Blackrock, Inc.Buy+12,441+1.6%782,992$443.41KQ1 2026May 13, 2026
Cibc Bancorp Usa Inc.Buy+172,649—172,649$97.77KQ1 2026May 12, 2026
Bnp Paribas Financial MarketsSell-3-15.0%17$10.00Q1 2026May 12, 2026
Sargent Investment Group, LlcSell-62,100-10.1%549,900$311.41KQ1 2026May 11, 2026
Vanguard Capital Management LlcBuy+1,879,989—1,879,989$1.06MQ1 2026May 08, 2026
Vanguard Fiduciary Trust CoBuy+313,856—313,856$177.64KQ1 2026May 08, 2026
Vanguard Global Advisers, LlcBuy+13,865—13,865$7.85KQ1 2026May 08, 2026
Lpl Financial LlcBuy+119+0.5%23,185$13.13KQ1 2026May 06, 2026
Ubs Group AgSell-72-0.1%115,200$65.20KQ1 2026May 05, 2026
Fifth Third BancorpBuy+3,082—3,082$1.75KQ1 2026May 01, 2026
Kestra Advisory Services, LlcBuy+2,500+9.7%28,200$15.97KQ1 2026Apr 30, 2026
Seelaus Asset Management LlcSell-1,000-5.8%16,300$9.23KQ1 2026Apr 29, 2026
Sbi Securities Co., Ltd.Buy+1—1$1.00Q1 2026Apr 28, 2026
Medallion Wealth Advisors, LlcSell-45-100.0%0$0.00Q1 2026Apr 24, 2026
Skylands Capital, LlcSell-147,017-7.9%1,707,498$966.96KQ1 2026Apr 22, 2026
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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.