How many institutions held CTKB - Cytek Biosciences, Inc. - Common Stock, par value $0.001 per share in Q4 2023?

101 institutional investors reported CTKB - Cytek Biosciences, Inc. - Common Stock, par value $0.001 per share for Q4 2023. 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

Q4 2023 13F Holders as of 31 Dec 2023

Security type / class: Equity / Common Stock, par value $0.001 per share
Total 13F shares: 78,933,920
Total 13F value: $719,883,797
Share change: +1,436,067
SEC-reported price per share: $9.12
Number of holders: 101
Value change: +$17,961,713
Number of buys: 56
Number of sells: 49
Shares outstanding: 129,694,583

Security key

23285D109

Report period

Q4 2023

Institutions

101

Top holders

CTKB full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 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: Q3 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

RA CAPITAL MANAGEMENT, L.P.

Disclosed value leader

RA CAPITAL MANAGEMENT, L.P.

Comparable rows

0/15

Latest evidence

30 Sep 2023

3/4/5 13F Highest disclosed value: $127,120,013 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

RA CAPITAL MANAGEMENT, L.P. has the largest disclosed position value at $127.12M.

0 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 RA CAPITAL MANAGEMENT, L.P.'s linked filing trail.

Disclosed position value Top 5

RA CAPITAL MANAGEMENT, L.P. $127.12M

BlackRock Finance, Inc. $92.57M

BROWN CAPITAL MANAGEMENT LLC $74.85M

VANGUARD GROUP INC $61.16M

HHLR ADVISORS, LTD. $36.75M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

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

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
RA CAPITAL MANAGEMENT, L.P.	3/4/5 13F Director, 10%+ Owner · Company 3/4/5 13F	— denominator unverified	$127,120,013 13,381,054 shares	—	14 Mar 2022
BlackRock Finance, Inc.	13F Company 13F	— denominator unverified	$92,574,116 16,770,673 shares	—	30 Sep 2023
BROWN CAPITAL MANAGEMENT LLC	13F Company 13F	— denominator unverified	$74,853,850 13,560,480 shares	—	30 Sep 2023
VANGUARD GROUP INC	13F Company 13F	— denominator unverified	$61,158,404 11,079,421 shares	—	30 Sep 2023
HHLR ADVISORS, LTD.	13F Company 13F	— denominator unverified	$36,746,806 6,657,030 shares	—	30 Sep 2023
STATE STREET CORP	13F Company 13F	— denominator unverified	$20,852,037 3,777,543 shares	—	30 Sep 2023

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 Q4 2023

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

Institutions

101

78,933,920

Rows available

101

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 Q4 2023 vs Q4 2025 Across Filers

Q4 2025 holders

155

Q4 2023 holders

101

Holder diff

-54

Investor	Q4 2025 Shares	Q4 2023 Shares	Share Diff	Share Chg %	Q4 2025 value	Q4 2023 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend