Cytek Biosciences, Inc. (CTKB) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

127,547,859Shares Outstanding

83,764,012Shares held by institutions

$278,934,160Value of institutional holdings

65.67%Institutional ownership %

5.34%Shares Changed QoQ

151No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Cytek Biosciences, Inc. (NASDAQ:CTKB) appears in 151 institutional 13F filings for the quarter ending December 2025.

They owned 64.3% of outstanding stock in December 2025, up from 63.3% the prior quarter.
Their total shares held in CTKB increased 3.57% quarter over quarter, and separately, investors owning Cytek Biosciences decreased 0.66% from a year ago.
Of these 151 funds, 72 grew their exposure to Cytek Biosciences, 60 cut back, and 19 maintained positions.
Combined, these investors held 81.97Mn shares in CTKB for December 2025, up by 2.82Mn shares quarter on quarter, and up 794.16K shares year over year.
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC holds the largest position in CTKB at 72.7K shares as of December 31, 2025, or 0.06% of shares outstanding.
The biggest buyers of Cytek Biosciences for the quarter ending December 2025 included WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (72.7K), Merit Financial Group, LLC (16.4K), Versant Capital Management, Inc (2.3K), GAMMA Investing LLC (1.11K), NorthCrest Asset Manangement, LLC (927).
The biggest sellers of Cytek Biosciences for the quarter ending December 2025 included SG Americas Securities, LLC (29.68K), Sterling Capital Management LLC (2.9K), Louisiana State Employees Retirement System (1.6K), Pallas Capital Advisors LLC (489).
Business Quant data shows the 10 biggest positions in Cytek Biosciences as of December 2025 are held by WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (72.7K), State of Alaska, Department of Revenue (61.27K), Louisiana State Employees Retirement System (48.8K), SG Americas Securities, LLC (34.61K), YOUSIF CAPITAL MANAGEMENT, LLC (27.08K), STRS OHIO (26.2K), Merit Financial Group, LLC (16.4K), NorthCrest Asset Manangement, LLC (15.22K), Pallas Capital Advisors LLC (13.46K), Everhart Financial Group, Inc. (12.96K).

151 Institutional Holders

83,764,012 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	17,173,028	625,335	3.78%	$86,723,792.00
VANGUARD GROUP INC	31 Dec, 2025	7,475,477	541,973	7.82%	$37,751,160.00
Topline Capital Management, LLC	31 Dec, 2025	7,442,466	498,186	7.17%	$37,584,453.00
HHLR ADVISORS, LTD.	31 Dec, 2025	6,657,030	0	0.00%	$33,618,002.00
Boston Partners	31 Dec, 2025	5,008,309	4,971,126	13,369.35%	$25,297,227.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	4,752,447	1,334,065	39.03%	$23,999,857.00
State Street Corp	31 Dec, 2025	4,146,964	62,596	1.53%	$20,942,168.00
Goldman Sachs Group Inc	31 Dec, 2025	3,579,828	1,842,519	106.06%	$18,078,132.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,790,574	7,125	0.26%	$14,095,696.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	2,646,891	-570,897	-17.74%	$13,366,732.00
BROWN CAPITAL MANAGEMENT LLC	31 Dec, 2025	2,072,915	-2,885,101	-58.19%	$10,468,221.00
Morgan Stanley	31 Dec, 2025	1,700,985	237,844	16.26%	$8,589,975.00
ROYCE & ASSOCIATES LP	31 Dec, 2025	1,692,657	-70,605	-4.00%	$8,547,918.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	1,094,539	-10,482	-0.95%	$5,527,422.00
Russell Investments Group, Ltd.	31 Dec, 2025	1,001,127	841,614	527.61%	$5,055,684.00
Northern Trust Corp	31 Dec, 2025	957,594	-55,989	-5.52%	$4,835,850.00
Bank Of America Corp /De/	31 Dec, 2025	856,161	515,841	151.58%	$4,323,612.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	764,279	-1,776,767	-69.92%	$3,859,609.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	743,455	-276,435	-27.10%	$3,754,447.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	675,000	-120,544	-15.15%	$3,408,750.00

1 - 20 of 151

Research Tools