CYTEK BIOSCIENCES INC

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CTKB·23285D109·US·Common Stock·Healthcare - Medical Devices-13D/G

CTKB (CYTEK BIOSCIENCES INC) is held by 98 institutional investors as of Q2 2026. Largest holders: BlackRock, Inc. ($42.4M), MILLENNIUM MANAGEMENT LLC ($41.4M), Boston Partners ($33.9M). Net institutional sentiment: Mixed.

98

Holders

(9 Elite)

$315.9M

Total Value

46% (106)

Consensus

49 buying - 57 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)66

Insider (Form 4)34

Activist (13D/13G)83

Congressional (STOCK Act)26

Holder Quality

65

★★★★★

Elite

45

★★★★

Strong

73

★★★

Solid

31

★★

Below

30

★

Weak

Held by 98 funds

9 elite

Who's Trading

Source dates: Price Aug 28, 2026 · Insiders Aug 20, 2026 · Activists Aug 6, 2026 · Congress none

InsiderJWJiang WenbinExercise 22K shAug 18, 2026

InsiderJWJiang WenbinTax 5K shAug 18, 2026

InsiderJWJiang WenbinTax 21K shAug 18, 2026

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Top Holders

Top Holders (98)History

AllNewIncreasedHeldDecreasedExited

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Decreased	9.6M(-43.7%)	$42.4M	0.0%	-29.01%	0
MILLENNIUM MANAGEMENT LLC	Increased	9.3M(+48.4%)	$41.4M	0.0%	+6.20%	40
Boston Partners	Increased	7.7M(+32.0%)	$33.9M	0.0%	-5.21%	37
HHLR ADVISORS, LTD.	Unchanged	6.7M	$29.5M	3.5%	-78.65%	0
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	4.9M(+3.7%)	$21.9M	0.0%	+4.53%	30
GEODE CAPITAL MANAGEMENT, LLC	Increased	3.1M(+8.0%)	$13.6M	0.0%	-57.27%	30
DIMENSIONAL FUND ADVISORS LP	Decreased	2.6M(-1.8%)	$11.6M	0.0%	-14.88%	0
STATE STREET CORP	Decreased	2.6M(-37.8%)	$11.4M	0.0%	-47.17%	0
GOLDMAN SACHS GROUP INC	Decreased	2.2M(-7.6%)	$9.6M	0.0%	-9.10%	0
ROYCE & ASSOCIATES LP	Increased	2.1M(+26.7%)	$9.2M	0.1%	+7.87%	34
Russell Investments Group, Ltd.	Increased	1.5M(+11.1%)	$6.7M	0.0%	-2.38%	30
BANK OF AMERICA CORP /DE/	Increased	1.3M(+30.4%)	$5.8M	0.0%	-5.43%	34
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Decreased	1.1M(-50.6%)	$5.1M	0.0%	+4.58%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Decreased	1.1M(-2.8%)	$4.8M	0.0%	-53.03%	0
NORTHERN TRUST CORP	Decreased	1M(-0.2%)	$4.4M	0.0%	-58.28%	0
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	Increased	973,833(+204.4%)	$4.3M	0.0%	+10.58%	43
JANE STREET GROUP, LLC	New	906,162	$4M	0.0%	+3.16%	37
TUDOR INVESTMENT CORP ET AL	Increased	837,913(+161.3%)	$3.7M	0.0%	+3.70%	43
AQR CAPITAL MANAGEMENT LLC	Decreased	813,971(-10.8%)	$3.6M	0.0%	+13.09%	0
VFVANGUARD FIDUCIARY TRUST CO	Increased	740,662(+3.3%)	$3.3M	0.0%	+4.53%	27

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer