Who Owns Cytek Biosciences, Inc. (CTKB)?Hedge Fund & Institutional Holders

$4.01+0.01 (+0.25%)HealthcareNASDAQ

Institutional Holders

50

as of Q4 2025

Total Institutional Value

$InfinityT

% of Float Held

6.384354958260286e+286%

QoQ Change in Holders

+6 / -3

Price History

$2.42$3.67$4.91$6.16$7.40Sep 24Jun 25Mar 26

CTKB — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
Boston PartnersIncreased+5.0M+$24.9B
Topline Capital Management, LLCIncreased+498K+$13.5B
MILLENNIUM MANAGEMENT LLCIncreased+1.3M+$11.1B
BROWN CAPITAL MANAGEMENT LLCNew Position+2.1M+$10.5B
M&T BANK CORPNew Position+43K+$4.3B
PRINCIPAL FINANCIAL GROUP INCNew Position+667K+$3.4B
BANK OF AMERICA CORP /DE/Increased+686K+$3.0B
Russell Investments Group, Ltd.Increased+842K+$1.4B
FMR LLCIncreased+53K+$999.4M
GOLDMAN SACHS GROUP INCIncreased+53K+$971.5M
Invesco Ltd.Increased+10K+$662.7M
D. E. Shaw & Co., Inc.Increased+142K+$580.1M
Louisiana State Employees Retirement SystemNew Position+50K+$254.0M
BAILARD, INC.New Position+29K+$147.0M
STRS OHIONew Position+26K+$132.0M

CTKB — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
Focus Partners WealthDecreased-37K-$31.2B
WELLINGTON MANAGEMENT GROUP LLPDecreased-1.8M-$5.8B
JACOBS LEVY EQUITY MANAGEMENT, INCDecreased-560K-$1.9B
JANE STREET GROUP, LLCDecreased-278K-$1.2B
STATE OF WISCONSIN INVESTMENT BOARDDecreased-170K-$1.2B
TUDOR INVESTMENT CORP ET ALClosed Position-250K-$866.8M
SUSQUEHANNA INTERNATIONAL GROUP, LLPDecreased-145K-$669.2M
Legal & General Group PlcDecreased-4K-$667.5M
Point72 Asset Management, L.P.Decreased-73K-$651.0M
TWO SIGMA INVESTMENTS, LPDecreased-146K-$609.9M
Squarepoint Ops LLCClosed Position-159K-$550.5M
Cubist Systematic Strategies, LLCClosed Position-156K-$542.6M
AQR CAPITAL MANAGEMENT LLCDecreased-276K-$539.0M
IEQ CAPITAL, LLCDecreased-29K-$530.3M
ALLIANCEBERNSTEIN L.P.Decreased-9K-$519.3M

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1Topline Capital Management, LLC7,442,466$37.6B3.40%Share
2HHLR ADVISORS, LTD.6,657,030$33.6B1.08%Share
3Boston Partners5,008,309$25.0B0.03%Share
4MILLENNIUM MANAGEMENT LLC4,752,447$23.0B0.01%Share
5DIMENSIONAL FUND ADVISORS LP2,492,256$12.0B0.00%Share
6BROWN CAPITAL MANAGEMENT LLC2,072,915$10.5B0.86%Share
7ROYCE & ASSOCIATES LP1,692,657$8.5B0.09%Share
8GOLDMAN SACHS GROUP INC1,378,577$6.0B0.00%Share
9CHARLES SCHWAB INVESTMENT MANAGEMENT INC1,094,539$5.0B0.00%Share
10M&T BANK CORP41,338$4.1B0.01%Share
11NORTHERN TRUST CORP849,217$4.0B0.00%Share
12PRINCIPAL FINANCIAL GROUP INC661,931$3.3B0.00%Share
13AQR CAPITAL MANAGEMENT LLC707,429$3.0B0.00%Share
14RENAISSANCE TECHNOLOGIES LLC675,000$3.0B0.00%Share
15UBS Group AG457,981$2.3B0.00%Share
16WELLINGTON MANAGEMENT GROUP LLP437,168$2.0B0.00%Share
17BANK OF AMERICA CORP /DE/405,610$2.0B0.00%Share
18Invesco Ltd.304,810$1.5B0.00%Share
19RHUMBLINE ADVISERS249,940$1.0B0.00%Share
20BANK OF AMERICA CORP /DE/278,046$1.0B0.00%Share
21Russell Investments Group, Ltd.210,738$1.0B0.00%Share
22AMERIPRISE FINANCIAL INC202,316$1.0B0.00%Share
23Connor, Clark & Lunn Investment Management Ltd.295,636$1.0B0.00%Share
24D. E. Shaw & Co., Inc.263,126$1.0B0.00%Share
25JACOBS LEVY EQUITY MANAGEMENT, INC264,177$1.0B0.00%Share
26ARROWSTREET CAPITAL, LIMITED PARTNERSHIP361,677$1.0B0.00%Share
27GOLDMAN SACHS GROUP INC375,135$1.0B0.00%Share
28PUBLIC SECTOR PENSION INVESTMENT BOARD379,274$1.0B0.00%Share
29JPMORGAN CHASE & CO263,715$1.0B0.00%Share
30WELLINGTON MANAGEMENT GROUP LLP219,393$1.0B0.00%Share
31AMERICAN CENTURY COMPANIES INC284,644$1.0B0.00%Share
32Nuveen, LLC250,642$1.0B0.00%Share
33Russell Investments Group, Ltd.224,754$1.0B0.00%Share
34FMR LLC234,072$1.0B0.00%Share
35PDT Partners, LLC91,869$463.0M0.03%Share
36Louisiana State Employees Retirement System50,400$254.0M0.00%Share
37Invesco Ltd.47,575$240.0M0.00%Share
38Invesco Ltd.46,412$234.0M0.00%Share
39BAILARD, INC.29,300$147.0M0.00%Share
40STRS OHIO26,200$132.0M0.00%Share
41OREGON PUBLIC EMPLOYEES RETIREMENT FUND25,175$127.0M0.00%Share
42COMERICA BANK23,997$121.0M0.00%Share
43M&T BANK CORP770$106.0M0.00%Share
44AXQ CAPITAL, LP19,124$96.0M0.02%Share
45Pallas Capital Advisors LLC13,953$70.0M0.00%Share
46State of Wyoming13,022$65.0M0.01%Share
47Everhart Financial Group, Inc.12,962$65.0M0.01%Share
48BlackRock, Inc.12,652,592$63.0M0.00%Share
49M&T BANK CORP338$46.0M0.00%Share
50VANGUARD GROUP INC6,742,091$34.0M0.00%Share

CTKB Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 2025156$205.0B+41
Q3 2025115$168.7B-20
Q2 2025135$133.6B-26
Q1 2025161$240.3B+11
Q4 2024150$702.3B+29
Q3 2024121$6.7T+7
Q2 2024114$7.8T+6
Q1 2024108$165.0T—

Similar Stocks by Institutional Ownership

LLY

Eli Lilly and Company

JNJ

Johnson & Johnson

ABBV

AbbVie Inc.

NVS

Novartis AG

AZN

AstraZeneca PLC

MRK

Merck & Co., Inc.

UNH

UnitedHealth Group Incorporated

AMGN

Amgen Inc.

As of Q4 2025, 50 institutional investors hold CTKB (Cytek Biosciences, Inc.). The largest holder is Topline Capital Management, LLC with $37.6B in shares. This quarter, 6 institutions opened new positions and 3 closed their positions.

Frequently Asked Questions

How many hedge funds own CTKB?

As of Q4 2025, 50 institutional investors report holding CTKB (Cytek Biosciences, Inc.) in their 13F filings.

Who is the largest institutional holder of CTKB?

The largest institutional holder of CTKB is Topline Capital Management, LLC with $37.6B in shares.

Is institutional ownership of CTKB increasing or decreasing?

This quarter, 6 institutions opened new positions in CTKB and 3 closed their positions.