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Cytek Biosciences, Inc.

CTKB
Exchange
Nasdaq
Industry
Laboratory Analytical Instruments
SEC CIK
0001831915

No open-market purchases or sales by Cytek Biosciences, Inc. insiders were filed in the last 90 days; 154 institutions reported holding it in 13F filings for Q2 2026, worth $361.0M in total; HHLR Advisors (Hillhouse) is the only superinvestor holding it.

Q2 2026 vs. Q1 2026

How the institutions holding Cytek Biosciences, Inc. changed between Q1 2026 and Q2 2026.

All holders in Q2 2026All holders in Q1 2026

13F holders of CTKB: Q1 2026 compared with Q2 2026
MeasureQ1 2026Of which not filed for Q2 2026Q2 2026Change
Holders1651154−10
Shares85.1M60.7K81.5M−3.49M (−4.1%)
Value$371.8M$265.4K$361.0M−$10.5M (−2.8%)

1 institution that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (28)

Institutions that held Cytek Biosciences, Inc. at the end of Q2 2026 but not at the end of Q1 2026.

Institutions new to CTKB in Q2 2026
InstitutionSharesValue% of portfolio
Jane Street Group, LLC906,162$4.01M0.00%
Qube Research & Technologies Ltd689,821$3.06M0.00%
Marshall Wace, LLP441,704$1.96M0.00%
Point72 Asset Management, L.P.422,361$1.87M0.00%
Jain Global LLC411,465$1.82M0.02%
Y-Intercept (Hong Kong) Ltd193,128$855.6K0.02%
XTX Topco Ltd142,723$632.3K0.01%
Aquatic Capital Management LLC76,762$340.1K0.01%
Catalyst Funds Management Pty Ltd62,500$276.9K0.02%
Los Angeles Capital Management LLC62,160$275.4K0.00%
Balyasny Asset Management LLC54,381$240.9K0.00%
Campbell & CO Investment Adviser LLC39,333$174.2K0.01%
ExodusPoint Capital Management, LP36,140$160.1K0.00%
R Squared Ltd35,412$156.9K0.08%
EntryPoint Capital, LLC22,871$101.3K0.02%
Laurion Capital Management LP22,263$98.6K0.01%
Quadrature Capital Ltd21,420$94.9K0.00%
HSBC Holdings PLC19,734$85.7K0.00%
Aigen Investment Management, LP14,029$62.1K0.02%
Caxton Associates LLP11,931$52.9K0.00%
Two Sigma Securities, LLC11,180$49.5K0.00%
Brevan Howard Capital Management LP10,438$46.2K0.00%
Quantbot Technologies LP6,536$29.0K0.00%
Global Retirement Partners, LLC932$4.13K0.00%
Fortitude Family Office, LLC115$5090.00%
Plante Moran Financial Advisors, LLC73$3230.00%
Clearstead Advisors, LLC47$2090.00%
Davis Capital Management12$530.00%

Sold out (38)

Institutions that held Cytek Biosciences, Inc. at the end of Q1 2026 and filed for Q2 2026 without it.

Institutions that sold out of CTKB in Q2 2026
InstitutionShares, Q1 2026Value, Q1 2026
Brown Capital Management LLC1,480,506$6.47M
Simcoe Capital LLC882,113$3.85M
Principal Financial Group Inc534,759$2.34M
Public Sector Pension Investment Board394,718$1.72M
State of Wisconsin Investment Board104,046$454.7K
Thrivent Financial for Lutherans73,399$321.0K
Illinois Municipal Retirement Fund60,877$266.0K
Panagora Asset Management Inc51,593$225.5K
Louisiana State Employees Retirement System48,800$213.3K
New York State Teachers Retirement System44,829$196.0K
nVerses Capital, LLC38,319$167.5K
Amalgamated Bank31,901$139.0K
Commonwealth of Pennsylvania Public School Empls Retrmt Sys27,193$118.8K
Yousif Capital Management, LLC27,078$118.3K
Virtu Financial LLC27,026$118.0K
Oregon Public Employees Retirement Fund25,175$110.0K
Teachers Retirement System of the State of Kentucky24,338$107.0K
JustInvest LLC19,066$83.3K
Mariner, LLC17,807$77.8K
Merit Financial Group, LLC16,398$71.7K
Maryland State Retirement & Pension System15,656$68.4K
Dynamic Technology Lab Private Ltd14,778$64.6K
Mutual of America Capital Management LLC12,584$55.0K
State of Wyoming12,253$53.5K
Neuberger Berman Group LLC11,229$49.1K
M&T Bank Corp10,308$45.0K
Pinnacle Wealth Planning Services, Inc.4,313$18.8K
Simplex Trading, LLC3,226$14.1K
Optiver Holding B.V.3,175$13.9K
Clear Street Markets LLC1,704$7.45K
Stone House Investment Management, LLC318$1.39K
Wealth Preservation Advisors, LLC109$476
Keating Financial Advisory Services, Inc.86$376
MAI Capital Management78$341
Parkside Financial Bank & Trust66$289
Ankerstar Wealth, LLC60$262
Root Financial Partners, LLC42$184
SJS Investment Consulting Inc.6$27

Not filed for Q2 2026 yet (1)

Institutions that held Cytek Biosciences, Inc. at the end of Q1 2026 and haven't filed a 13F for Q2 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding CTKB in Q1 2026 that haven't filed for Q2 2026
InstitutionShares, Q1 2026Value, Q1 2026
CWM, LLC60,724$265.4K