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Cytek Biosciences, Inc.
$4.59 +0.01 (+0.22%) At close · Jul 2
Market Cap
$592.76M
Shares
129,142,587

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 164
Total Value: $361,683,792
Total Shares: 82,765,191
Showing 1–100 of 165 holdings by value · page 1 of 2

Institutional Ownership Trend

20 quarters

Holder Concentration

Across 164 13F filers
Top Holder
20.5%
Jun 2023 → Mar 2026 · range 19.6% – 24.7%
of institutional value
Top 5
51.7%
Jun 2023 → Mar 2026 · range 51.7% – 71.9%
of institutional value
Top 10
72.0%
Jun 2023 → Mar 2026 · range 72.0% – 85.1%
of institutional value
HHI
782
Jun 2023 → Mar 2026 · range 782 – 1,246
Broadly held
Showing 100 of 165
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $74,321,763 20.55% 17,007,269
Small Topline Capital Management, LLC $30,871,781 8.54% 7,064,481
Mid HHLR ADVISORS, LTD. $29,091,221 8.04% 6,657,030
Mega MILLENNIUM MANAGEMENT LLC $27,495,157 7.60% 6,291,798
Large Boston Partners $25,358,118 7.01% 5,802,773
Mega VANGUARD CAPITAL MANAGEMENT LLC $20,813,890 5.75% 4,762,904
Mega STATE STREET CORP $18,020,778 4.98% 4,123,748
Mega GEODE CAPITAL MANAGEMENT, LLC $12,384,383 3.42% 2,833,955
Mega DIMENSIONAL FUND ADVISORS LP $11,638,746 3.22% 2,663,329
Mega GOLDMAN SACHS GROUP INC $10,246,491 2.83% 2,344,735
Mega MORGAN STANLEY $7,511,480 2.08% 1,718,875
Mid ROYCE & ASSOCIATES LP $7,177,148 1.98% 1,642,368
Small BROWN CAPITAL MANAGEMENT LLC $6,469,811 1.79% 1,480,506
Large Russell Investments Group, Ltd. $5,942,755 1.64% 1,359,900
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $4,827,106 1.33% 1,104,601
Mega BANK OF AMERICA CORP /DE/ Bank $4,409,564 1.22% 1,009,054
Mega NORTHERN TRUST CORP Bank $4,392,691 1.21% 1,005,193
Mega AQR CAPITAL MANAGEMENT LLC $3,986,931 1.10% 912,342
Small Simcoe Capital LLC $3,854,833 1.07% 882,113
Mid CenterBook Partners LP $3,189,549 0.88% 729,874
Mega VANGUARD FIDUCIARY TRUST CO Bank $3,133,338 0.87% 717,011
Large RENAISSANCE TECHNOLOGIES LLC $2,957,179 0.82% 676,700
Mega Bank of New York Mellon Corp Bank $2,659,784 0.74% 608,647
Mega PRINCIPAL FINANCIAL GROUP INC $2,336,896 0.65% 534,759
Mega CITADEL ADVISORS LLC $2,059,983 0.57% 471,392
Large HRT FINANCIAL LP $1,809,407 0.50% 414,052
Large ACADIAN ASSET MANAGEMENT LLC $1,743,577 0.48% 398,988
Large Public Sector Pension Investment Board Pension $1,724,917 0.48% 394,718
Mega Invesco Ltd. $1,696,577 0.47% 388,233
Large TUDOR INVESTMENT CORP ET AL $1,401,524 0.39% 320,715
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $1,398,002 0.39% 319,909
Mega JPMORGAN CHASE & CO $1,307,022 0.36% 299,090
Mega FMR LLC $1,238,396 0.34% 283,386
Mega AMERICAN CENTURY COMPANIES INC $1,230,945 0.34% 281,681
Mega D. E. Shaw & Co., Inc. $1,136,746 0.31% 260,125
Large JACOBS LEVY EQUITY MANAGEMENT, INC $1,124,366 0.31% 257,292
Mega RHUMBLINE ADVISERS $1,112,553 0.31% 254,589
Mega Nuveen, LLC $1,072,926 0.30% 245,521
Large Connor, Clark & Lunn Investment Management Ltd. $1,055,372 0.29% 241,504
Mega AMERIPRISE FINANCIAL INC $818,369 0.23% 187,270
Mega UBS Group AG $816,668 0.23% 186,881
Mega Legal & General Group Plc $799,097 0.22% 182,860
Large IEQ CAPITAL, LLC $630,993 0.17% 144,392
Large VOYA INVESTMENT MANAGEMENT LLC $617,852 0.17% 141,385
Mega ALLIANCEBERNSTEIN L.P. $616,379 0.17% 141,048
Large PRUDENTIAL FINANCIAL INC $513,898 0.14% 117,597
Mega FRANKLIN RESOURCES INC $498,061 0.14% 113,973
Small Numerai GP LLC $491,450 0.14% 112,460
Mid GSA CAPITAL PARTNERS LLP $476,836 0.13% 109,116
Mega DEUTSCHE BANK AG\ Bank $456,389 0.13% 104,437
Large STATE OF WISCONSIN INVESTMENT BOARD $454,681 0.13% 104,046
Large Creative Planning $393,024 0.11% 89,937
Mid PDT Partners, LLC $379,617 0.10% 86,869
Mega PRICE T ROWE ASSOCIATES INC /MD/ $350,220 0.10% 80,142
Mega BNP PARIBAS ARBITRAGE, SA $341,052 0.09% 78,044
Large Thrivent Financial for Lutherans $320,753 0.09% 73,399
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $317,699 0.09% 72,700
Large MetLife Investment Management, LLC $281,939 0.08% 64,517
Mid State of Alaska, Department of Revenue $267,744 0.07% 61,269
Mid Illinois Municipal Retirement Fund Pension $266,032 0.07% 60,877
Large CWM, LLC $265,363 0.07% 60,724
Large Cerity Partners LLC $253,996 0.07% 58,123
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $244,763 0.07% 56,010
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $240,983 0.07% 55,145
Large PANAGORA ASSET MANAGEMENT INC $225,461 0.06% 51,593
Large Quantinno Capital Management LP $223,796 0.06% 51,212
Mid Louisiana State Employees Retirement System Pension $213,256 0.06% 48,800
Mega WELLS FARGO & COMPANY/MN $197,860 0.05% 45,277
Mega Vanguard Global Advisers, LLC $197,576 0.05% 45,212
Large NEW YORK STATE TEACHERS RETIREMENT SYSTEM Pension $195,902 0.05% 44,829
Mid ALGERT GLOBAL LLC $185,987 0.05% 42,560
Mega CANADA PENSION PLAN INVESTMENT BOARD Pension $180,481 0.05% 41,300
Small nVerses Capital, LLC $167,454 0.05% 38,319
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $152,609 0.04% 34,922
Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Pension $151,507 0.04% 34,670
Large SG Americas Securities, LLC Broker-Dealer $151,228 0.04% 34,606
Large Focus Partners Wealth $147,168 0.04% 33,677
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $140,709 0.04% 32,199
Large AMALGAMATED BANK Bank $139,407 0.04% 31,901
Large Police & Firemen's Retirement System of New Jersey Pension $128,779 0.04% 29,469
Large MERCER GLOBAL ADVISORS INC /ADV $127,232 0.04% 29,115
Mid Jump Financial, LLC $126,258 0.03% 28,892
Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS $118,833 0.03% 27,193
Mid YOUSIF CAPITAL MANAGEMENT, LLC $118,330 0.03% 27,078
Mid Virtu Financial LLC $118,103 0.03% 27,026
Large STRS OHIO $114,494 0.03% 26,200
Mid INTECH INVESTMENT MANAGEMENT LLC $111,998 0.03% 25,629
Mega TWO SIGMA INVESTMENTS, LP $111,872 0.03% 25,600
Large Squarepoint Ops LLC $110,543 0.03% 25,296
Mid OREGON PUBLIC EMPLOYEES RETIREMENT FUND Pension $110,014 0.03% 25,175
Large FIFTH THIRD BANCORP Bank $108,852 0.03% 24,909
Large TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY Pension $106,357 0.03% 24,338
Mega BARCLAYS PLC $105,503 0.03% 24,143
Large State of Tennessee, Department of Treasury $100,073 0.03% 22,900
Small Caitong International Asset Management Co., Ltd $90,869 0.03% 20,794
Mid BAILARD, INC. $86,963 0.02% 19,900
Small AXQ CAPITAL, LP $86,123 0.02% 19,708
Mid Vanguard Personalized Indexing Management, LLC $83,318 0.02% 19,066
Large ProShare Advisors LLC $79,603 0.02% 18,216
Mega PNC FINANCIAL SERVICES GROUP, INC. $78,340 0.02% 17,927
Key facts CIK 1831915 CUSIP 23285D109 13F (30d) 1 filings 1 filers Visit website Investor relations

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