13F Insight
DOSSIER · 13F Holders · Q1 2026High-convictionMulti-bagger
CTSO

CYTOSORBENTS CORP

54 institutions still hold CYTOSORBENTS CORP as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 23283X206·54 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 5.7%
vs prior quarter
13F value held
$9M
62.0% inst. owned
of float
Holders
54
+41 QoQ
filers reporting
Activity
+21 / −101
+848 added · −913 reduced
this quarter
Concentration
32.26%
AVENIR CORP #1
top holder share
AI Holders Summary · Q1 2026

54 institutions reported CTSO in Q1 2026. AVENIR CORP leads at 32.3% of the visible book. +41 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
AVENIR CORP
CIK 0001033475
$3M5.2M0.36%Q1 202602
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$1M1.9M0.00%Q1 202603
Skylands Capital, LLC
CIK 0001299910
$966,9561.7M0.13%Q1 202604
Neuberger Berman Group LLC
CIK 0001465109
$950,7761.7M0.00%Q1 202605
CM Management, LLC
CIK 0001841857
$836,1421.5M0.70%Q1 202606
BlackRock, Inc.
CIK 0002012383
$443,408783K0.00%Q1 202607
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$400,621707K0.00%Q1 202608
Sargent Investment Group, LLC
CIK 0001766157
$311,408550K0.04%Q1 202609
Pathstone Holdings, LLC
CIK 0002011612
$283,124500K0.00%Q1 202610
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$177,642314K0.00%Q1 202611
CIBC Private Wealth Group LLC
CIK 0001298088
$110,357173K0.00%Q4 202512
CIBC Bancorp USA Inc.
CIK 0001711924
$97,771173K0.00%Q1 202613
CITADEL ADVISORS LLC
CIK 0001423053
$95,419149K0.00%Q4 202514
STATE STREET CORP
CIK 0000093751
$90,208159K0.00%Q1 202615
OSAIC HOLDINGS, INC.
CIK 0001677044
$74,245130K0.00%Q1 202616
UBS Group AG
CIK 0001610520
$65,203115K0.00%Q1 202617
RAYMOND JAMES FINANCIAL INC
CIK 0000720005
$61,020108K0.00%Q1 202618
NWF Advisory Services Inc.
CIK 0002045735
$58,974104K0.01%Q1 202619
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$57,038101K0.00%Q1 202620
MORGAN STANLEY
CIK 0000895421
$56,726100K0.00%Q1 2026
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