How many institutions held CTKB - Cytek Biosciences, Inc. - Common Stock, par value $0.001 per share in Q1 2026?

163 institutional investors reported CTKB - Cytek Biosciences, Inc. - Common Stock, par value $0.001 per share for Q1 2026. Use the holders table for investor-level position and value details.

Cytek Biosciences, Inc. - Common Stock, par value $0.001 per share (CTKB)

Q: What does CUSIP 23285D109 represent in this 13F holders report?

CUSIP 23285D109 is the security identifier for CTKB - Cytek Biosciences, Inc. - Common Stock, par value $0.001 per share used to aggregate holder disclosures.

CUSIP: 23285D109

Q1 2026 13F Holders as of 31 Mar 2026

Security type / class: Equity / Common Stock, par value $0.001 per share
Total 13F shares: 85,067,527
Total 13F value: $371,768,728
Share change: +2,714,567
SEC-reported price per share: $4.37
Number of holders: 163
Value change: +$11,134,305
Number of buys: 87
Number of sells: 62
Shares outstanding: 129,694,583

Security key

23285D109

Report period

Q1 2026

Institutions

163

Top holders

CTKB full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2026 Previous quarter: Q4 2025 Cytek Biosciences, Inc. SEC filings Cytek Biosciences, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 23285D109

Newer quarter: Q2 2026 Previous quarter: Q4 2025

Recent filing periods:

Q2 2026 Q4 2025 Q3 2025

Ownership snapshot

Top reported holders of CTKB - Cytek Biosciences, Inc. - Common Stock, par value $0.001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Topline Capital Managemen...

Disclosed value leader

BlackRock, Inc.

Comparable rows

15/15

Latest evidence

31 Dec 2025

13F 13D/G 3/4/5 Lead comparable stake: 5.3% 13D/G row: Topline Capital Management, LLC Showing 1-6 of 15 holder rows.

Quick read

Topline Capital Management, LLC leads the comparable SEC ownership view at 5.3%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Topline Capital Management, LLC's linked filing trail.

Comparable ownership Top 5

Topline Capital Management, LLC 5.3%

BROWN CAPITAL MANAGEMENT LLC 3.9%

Don M. Hardison 0.01%

BlackRock, Inc. 13%

VANGUARD GROUP INC 5.8%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Topline Capital Management, LLC	13F 13D/G Company 13F 13D/G	5.3% from 13D/G	$37,584,453 7,442,466 shares	—	31 Dec 2025
BROWN CAPITAL MANAGEMENT LLC	13D/G 13F Company 13D/G 13F	3.9%	$17,204,316 4,958,016 shares	-$8,695,650	30 Sep 2025
Don M. Hardison	3/4/5 Director 3/4/5	0.01%	$152,819 15,706 shares mixed-class rows	—	05 Jun 2025
BlackRock, Inc.	13F Company 13F	13%	$86,723,792 17,173,028 shares	—	31 Dec 2025
VANGUARD GROUP INC	13F Company 13F	5.8%	$37,751,160 7,475,477 shares	—	31 Dec 2025
HHLR ADVISORS, LTD.	13F Company 13F	5.1%	$33,618,002 6,657,030 shares	—	31 Dec 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

163

85,067,527

Rows available

163

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders

155

Q1 2026 holders

163

Holder diff

Investor	Q4 2025 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q4 2025 value	Q1 2026 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend