FREMONT, CA
CYTEK BIOSCIENCES, INC.CTKB— Latest position per institution from SEC 13F filings
15
Institutional holders
101.96M
Total shares held
498.71M
Estimated value
5.10M
Avg. position size
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
17.07M
Value
95.25M
Filed
Jun 30, 2024
BLACKROCK, INC.
CIK 2012383
Shares
17.01M
Value
74.32M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
7.48M
Value
37.75M
Filed
Dec 31, 2025
TOPLINE CAPITAL MANAGEMENT, LLC
CIK 1792549
Shares
7.06M
Value
30.87M
Filed
Mar 31, 2026
RA CAPITAL MANAGEMENT, L.P.
CIK 1346824
Shares
6.81M
Value
45.69M
Filed
Mar 31, 2024
HHLR ADVISORS, LTD.
CIK 1762304
Shares
6.66M
Value
29.09M
Filed
Mar 31, 2026
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
6.29M
Value
27.50M
Filed
Mar 31, 2026
BOSTON PARTNERS
CIK 1386060
Shares
5.80M
Value
25.36M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
4.76M
Value
20.81M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
4.12M
Value
18.02M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
2.83M
Value
12.39M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
2.66M
Value
11.64M
Filed
Mar 31, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
2.34M
Value
10.25M
Filed
Mar 31, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
2.31M
Value
10.10M
Filed
Mar 31, 2026
MORGAN STANLEY
CIK 895421
Shares
1.72M
Value
7.51M
Filed
Mar 31, 2026
ROYCE & ASSOCIATES LP
CIK 906304
Shares
1.64M
Value
7.18M
Filed
Mar 31, 2026
BROWN CAPITAL MANAGEMENT LLC
CIK 885062
Shares
1.48M
Value
6.47M
Filed
Mar 31, 2026
RUSSELL INVESTMENTS GROUP, LTD.
CIK 1692234
Shares
1.36M
Value
5.94M
Filed
Mar 31, 2026
PERCEPTIVE ADVISORS LLC
CIK 1224962
Shares
1.29M
Value
11.85M
Filed
Mar 31, 2023
MACQUARIE GROUP LTD
CIK 1418333
Shares
1.25M
Value
10.71M
Filed
Jun 30, 2023
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK FINANCE, INC. | 1364742 | 17.07M | 95.25M | Jun 30, 2024 |
| 2 | BLACKROCK, INC. | 2012383 | 17.01M | 74.32M | Mar 31, 2026 |
| 3 | VANGUARD GROUP INC | 102909 | 7.48M | 37.75M | Dec 31, 2025 |
| 4 | TOPLINE CAPITAL MANAGEMENT, LLC | 1792549 | 7.06M | 30.87M | Mar 31, 2026 |
| 5 | RA CAPITAL MANAGEMENT, L.P. | 1346824 | 6.81M | 45.69M | Mar 31, 2024 |
| 6 | HHLR ADVISORS, LTD. | 1762304 | 6.66M | 29.09M | Mar 31, 2026 |
| 7 | MILLENNIUM MANAGEMENT LLC | 1273087 | 6.29M | 27.50M | Mar 31, 2026 |
| 8 | BOSTON PARTNERS | 1386060 | 5.80M | 25.36M | Mar 31, 2026 |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 4.76M | 20.81M | Mar 31, 2026 |
| 10 | STATE STREET CORP | 93751 | 4.12M | 18.02M | Mar 31, 2026 |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 2.83M | 12.39M | Mar 31, 2026 |
| 12 | DIMENSIONAL FUND ADVISORS LP | 354204 | 2.66M | 11.64M | Mar 31, 2026 |
| 13 | GOLDMAN SACHS GROUP INC | 886982 | 2.34M | 10.25M | Mar 31, 2026 |
| 14 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 2.31M | 10.10M | Mar 31, 2026 |
| 15 | MORGAN STANLEY | 895421 | 1.72M | 7.51M | Mar 31, 2026 |
| 16 | ROYCE & ASSOCIATES LP | 906304 | 1.64M | 7.18M | Mar 31, 2026 |
| 17 | BROWN CAPITAL MANAGEMENT LLC | 885062 | 1.48M | 6.47M | Mar 31, 2026 |
| 18 | RUSSELL INVESTMENTS GROUP, LTD. | 1692234 | 1.36M | 5.94M | Mar 31, 2026 |
| 19 | PERCEPTIVE ADVISORS LLC | 1224962 | 1.29M | 11.85M | Mar 31, 2023 |
| 20 | MACQUARIE GROUP LTD | 1418333 | 1.25M | 10.71M | Jun 30, 2023 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.