Security key
23285D109
Cytek Biosciences, Inc. - Common Stock (CTKB)
CUSIP: 23285D109
Q4 2023 13F Holders as of 31 Dec 2023
- Security type / class
- Equity / Common Stock
- 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
- 129,952,097
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2023
Institutions
101
Top holders
10
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
Reporting periods
Holder history for CUSIP 23285D109
Recent filing periods:
Ownership snapshot
Top reported holders of CTKB - Cytek Biosciences, Inc. - Common Stock (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 Finance, Inc.
Disclosed value leader
RA CAPITAL MANAGEMENT, L.P.
Comparable rows
15/15
Latest evidence
30 Sep 2023
13F
3/4/5
Lead comparable stake: 13%
Showing 1-6 of 15 holder rows.
Quick read
BlackRock Finance, Inc. leads the comparable SEC ownership view at 13%.
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 BlackRock Finance, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock Finance, Inc.
13%
BROWN CAPITAL MANAGEMENT LLC
10%
VANGUARD GROUP INC
8.5%
RA CAPITAL MANAGEMENT, L.P.
5.2%
HHLR ADVISORS, LTD.
5.1%
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 Finance, Inc. |
13F
Company
|
13%
|
$92,574,116
16,770,673 shares
|
— | 30 Sep 2023 |
| BROWN CAPITAL MANAGEMENT LLC |
13F
Company
|
10%
|
$74,853,850
13,560,480 shares
|
— | 30 Sep 2023 |
| VANGUARD GROUP INC |
13F
Company
|
8.5%
|
$61,158,404
11,079,421 shares
|
— | 30 Sep 2023 |
| RA CAPITAL MANAGEMENT, L.P. |
3/4/5
13F
Director, 10%+ Owner · Company
|
5.2%
from 13F
|
$127,120,013
13,381,054 shares
|
— | 14 Mar 2022 |
| HHLR ADVISORS, LTD. |
13F
Company
|
5.1%
|
$36,746,806
6,657,030 shares
|
— | 30 Sep 2023 |
| STATE STREET CORP |
13F
Company
|
2.9%
|
$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
Shares
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