How many institutions held CTKB - Cytek Biosciences, Inc. - Common Stock, par value $0.001 per share in Q3 2026?

19 institutional investors reported CTKB - Cytek Biosciences, Inc. - Common Stock, par value $0.001 per share for Q3 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

Q3 2026 13F Holders as of 30 Sep 2026

Security type / class: Equity / Common Stock, par value $0.001 per share
Total 13F shares: 124,601
Total 13F value: $623,612
Share change: -195,930
SEC-reported price per share: $5.96
Number of holders: 19
Value change: -$868,178
Number of buys: 5
Number of sells: 10
Shares outstanding: 129,694,583

Security key

23285D109

Report period

Q3 2026

Institutions

Top holders

CTKB full security history Ownership snapshot Full 13F holder table 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

Previous quarter: Q4 2025

Recent filing periods:

Q3 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

BlackRock, Inc.

Disclosed value leader

RA CAPITAL MANAGEMENT, L.P.

Comparable rows

5/15

Latest evidence

18 Aug 2026

13F 13D/G 3/4/5 Lead comparable stake: 7.2% 10 rows are not safely comparable across share classes. 13D/G row: BlackRock, Inc. Showing 1-6 of 15 holder rows.

Quick read

BlackRock, Inc. leads the comparable SEC ownership view at 7.2%.

5 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 BlackRock, Inc.'s linked filing trail.

Comparable ownership Top 5

BlackRock, Inc. 7.2%

MILLENNIUM MANAGEMENT LLC 7.2%

Boston Partners 5.9%

Topline Capital Management, LLC 5.3%

BROWN CAPITAL MANAGEMENT LLC 3.9%

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
BlackRock, Inc.	13F 13D/G Company 13F 13D/G	7.2% Reported 13D/G · 30 Jun 2026	$42,433,388 9,578,643 shares	—	30 Jun 2026
MILLENNIUM MANAGEMENT LLC	13D/G 13F Company 13D/G 13F	7.2% Reported 13D/G · 30 Jun 2026	$41,367,384 9,338,010 shares	+$6,490,437	30 Jun 2026
Boston Partners	13F 13D/G Company 13F 13D/G	5.9% Reported 13D/G · 30 Jun 2026	$33,942,877 7,660,943 shares	—	30 Jun 2026
Topline Capital Management, LLC	13D/G 13F Company 13D/G 13F	5.3% Reported 13D/G · 25 Sep 2025	$28,140,515 6,780,847 shares	$0	25 Sep 2025
BROWN CAPITAL MANAGEMENT LLC	13D/G 13D/G	3.9% Reported 13D/G · 30 Sep 2025	$17,204,316 4,958,016 shares	-$8,695,650	30 Sep 2025
RA CAPITAL MANAGEMENT, L.P.	3/4/5 Director, 10%+ Owner 3/4/5	— denominator unverified	$127,120,013 13,381,054 shares	—	14 Mar 2022

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 Q3 2026

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

Institutions

124,601

Rows available

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 Q3 2026 vs Q4 2025 Across Filers

Q4 2025 holders

155

Q3 2026 holders

Holder diff

-136

Investor	Q4 2025 Shares	Q3 2026 Shares	Share Diff	Share Chg %	Q4 2025 value	Q3 2026 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend