DOSSIER · 13F Holders · Q2 2026Healthcare · Laboratory Analytical Instruments
CTKB

CYTEK BIOSCIENCES INC

162 institutions still hold CYTEK BIOSCIENCES INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 23285D109·Laboratory Analytical Instruments·162 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$293M
visible holders
Holders
162
filers reporting
Concentration
14.46%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

162 institutions reported CTKB in Q2 2026. BlackRock, Inc. leads at 14.5% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$42M9.6M0.00%Q2 2026
02
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$41M9.3M0.01%Q2 2026
03
Boston Partners
CIK 0001386060
$34M7.7M0.03%Q2 2026
04
HHLR ADVISORS, LTD.
CIK 0001762304
$29M6.7M3.54%Q2 2026
05
Topline Capital Management, LLC
CIK 0001792549
$28M6.3M7.22%Q2 2026
06
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$22M4.9M0.00%Q2 2026
07
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$14M3.1M0.00%Q2 2026
08
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$12M2.6M0.00%Q2 2026
09
STATE STREET CORP
CIK 0000093751
$11M2.6M0.00%Q2 2026
10
GOLDMAN SACHS GROUP INC
CIK 0000886982
$10M2.2M0.00%Q2 2026
11
ROYCE & ASSOCIATES LP
CIK 0000906304
$9M2.1M0.07%Q2 2026
12
Russell Investments Group, Ltd.
CIK 0001692234
$7M1.5M0.01%Q2 2026
13
BANK OF AMERICA CORP /DE/
CIK 0000070858
$6M1.3M0.00%Q2 2026
14
Vanguard Portfolio Management
CIK 0002100121· Index
$5M1.1M0.00%Q2 2026
15
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$5M1.1M0.00%Q2 2026
16
NORTHERN TRUST CORP
CIK 0000073124· Index
$4M1.0M0.00%Q2 2026
17
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$4M974K0.00%Q2 2026
18
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$4M814K0.00%Q2 2026
19
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$3M741K0.00%Q2 2026
20
CITADEL ADVISORS LLC
CIK 0001423053
$3M721K0.00%Q2 2026
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Insiders at CYTEK BIOSCIENCES INC
Chin RichardHolder MichaelMuir Glenn PMccombe William D.Jiang WenbinYan MingFeuchtwang IlanImper Vera