CYTEK BIOSCIENCES INC

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

CTKB (CYTEK BIOSCIENCES INC) is held by 102 institutional investors as of Q1 2026. Largest holders: BlackRock, Inc. ($74.3M), HHLR ADVISORS, LTD. ($29.1M), MILLENNIUM MANAGEMENT LLC ($27.5M). Net institutional sentiment: Mixed. In Q1 2026, 1 member of Congress and 58 funds bought CTKB.

102

Holders

(10 Elite)

$318.9M

Total Value

59% (99)

Consensus

58 buying - 41 selling

13F: Mar 31, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)

Insider (Form 4)

Activist (13D/13G)

Congressional (STOCK Act)

Holder Quality

★★★★★

Elite

★★★★

Strong

★★★

Solid

★★

Below

★

Weak

Held by 102 funds

10 elite

Who's Trading

ActivistBlackRock, Inc.7.2%Jul 8, 2026

ActivistMillennium Management LLC6.1%May 18, 2026

ActivistThe Vanguard Group0.0%Mar 26, 2026

ActivistTOTopline Capital Management, LLC5.3%Nov 17, 2025

CongressDonald J. TrumpBuy $15,001 - $50,000Jul 31, 2025

InsiderMDMcCombe William D.Buy $97KJun 2, 2025

CongressDonald J. TrumpSale $1,001 - $15,000May 29, 2025

CongressDonald J. TrumpBuy $1,001 - $15,000Apr 28, 2025

CongressDonald J. TrumpSale $1,001 - $15,000Mar 27, 2025

CongressDonald J. TrumpBuy $1,001 - $15,000Feb 24, 2025

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Top Holders (102)History

AllNewIncreasedHeldDecreasedExited

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Decreased	17M(-1.0%)	$74.3M	0.0%	-28.87%	0
HHLR ADVISORS, LTD.	Unchanged	6.7M	$29.1M	1.7%	-77.96%	0
MILLENNIUM MANAGEMENT LLC	Increased	6.3M(+32.4%)	$27.5M	0.0%	+9.09%	37
Boston Partners	Increased	5.8M(+15.9%)	$25.4M	0.0%	-6.61%	33
VAVANGUARD CAPITAL MANAGEMENT LLC	New	4.8M	$20.8M	0.0%	+4.05%	39
STATE STREET CORP	Decreased	4.1M(-0.6%)	$18M	0.0%	-46.58%	0
GEODE CAPITAL MANAGEMENT, LLC	Increased	2.8M(+1.6%)	$12.4M	0.0%	-58.23%	28
DIMENSIONAL FUND ADVISORS LP	Increased	2.7M(+0.6%)	$11.6M	0.0%	-13.85%	28
GOLDMAN SACHS GROUP INC	Increased	2.3M(+31.0%)	$10.2M	0.0%	-8.38%	35
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	2.3M	$10.1M	0.0%	+4.05%	38
MORGAN STANLEY	Increased	1.7M(+1.1%)	$7.5M	0.0%	+0.21%	28
ROYCE & ASSOCIATES LP	Decreased	1.6M(-3.0%)	$7.2M	0.1%	+8.96%	0
Russell Investments Group, Ltd.	Increased	1.4M(+35.8%)	$5.9M	0.0%	-1.95%	35
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	1.1M(+0.9%)	$4.8M	0.0%	-51.70%	27
BANK OF AMERICA CORP /DE/	Increased	1M(+17.9%)	$4.4M	0.0%	-6.80%	31
NORTHERN TRUST CORP	Increased	1M(+5.0%)	$4.4M	0.0%	-57.81%	28
AQR CAPITAL MANAGEMENT LLC	Increased	912,342(+22.7%)	$4M	0.0%	+12.51%	32
VFVANGUARD FIDUCIARY TRUST CO	New	717,011	$3.1M	0.0%	+4.05%	37
RENAISSANCE TECHNOLOGIES LLC	Increased	676,700(+0.3%)	$3M	0.0%	-2.88%	26
Bank of New York Mellon Corp	Decreased	608,647(-4.6%)	$2.7M	0.0%	-52.95%	0

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