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Cytosorbents Corp

CTSO
Exchange
Nasdaq
Industry
Surgical & Medical Instruments & Apparatus
SEC CIK
0001175151

In the last 90 days, Cytosorbents Corp insiders filed 4 open-market purchases and 0 sales; 50 institutions reported holding it in 13F filings for Q2 2026, worth $6.04M in total; no superinvestor holds it.

Q3 2025 vs. Q2 2025

How the institutions holding Cytosorbents Corp changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of CTSO: Q2 2025 compared with Q3 2025
MeasureQ2 2025Of which not filed for Q3 2025Q3 2025Change
Holders45149+5
Shares16.4M28.0K16.3M−76.3K (−0.5%)
Value$20.7M$35.8K$15.3M−$5.46M (−26.3%)

1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (8)

Institutions that held Cytosorbents Corp at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to CTSO in Q3 2025
InstitutionSharesValue% of portfolio
Gsa Capital Partners LLP112,217$105.0K0.01%
Citadel Advisors LLC65,690$61.4K0.00%
Warren Averett Asset Management, LLC55,556$51.9K0.00%
Two Sigma Securities, LLC15,737$14.7K0.00%
LPL Financial LLC14,906$13.9K0.00%
Centiva Capital, LP10,737$10.0K0.00%
Rockefeller Capital Management L.P.1,000$9340.00%
Jones Financial Companies LLLP593$5530.00%

Sold out (3)

Institutions that held Cytosorbents Corp at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of CTSO in Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Squarepoint Ops LLC11,712$15.0K
N.E.W. Advisory Services LLC2,720$3.48K
Simplex Trading, LLC100$0

Not filed for Q3 2025 yet (1)

Institutions that held Cytosorbents Corp at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding CTSO in Q2 2025 that haven't filed for Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
EP Wealth Advisors, LLC28,000$35.8K