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Cytek Biosciences
CTKB

Overview Fund Activity

156 hedge funds and large institutions have $270M invested in Cytek Biosciences in 2025 Q2 according to their latest regulatory filings, with 24 funds opening new positions, 65 increasing their positions, 47 reducing their positions, and 28 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
156
Holders Change
-5
Holders Change %
-3.11%
% of All Funds
2.09%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
24
Increased
65
Reduced
47
Closed
28
Calls
–
Puts
$2K
Net Calls
-$2K
Net Calls Change
+$18K

Top Buyers

1
TCM
1
Topline Capital Management
California
$17.8M
2
RA
2
Royce & Associates
New York
$4.73M
3
Dimensional Fund Advisors
3
Dimensional Fund Advisors
Texas
$11.7M
4
AQR Capital Management
4
AQR Capital Management
Connecticut
$4.21M
5
Millennium Management
5
Millennium Management
New York
$3.14M

Top Sellers

1
Vanguard Group
1
Vanguard Group
Pennsylvania
$26.4M
2
BlackRock
2
BlackRock
New York
$57.9M
3
CP
3
CenterBook Partners
Connecticut
$0
4
Fidelity Investments
4
Fidelity Investments
Massachusetts
$700K
5
TI
5
Trexquant Investment
Connecticut
$153K
Name Holding Trade Value Shares
Change 		Shares
Change %
BlackRock
1
BlackRock
New York
$57.9M -$3.51M -1,033,747 -6%
Vanguard Group
2
Vanguard Group
Pennsylvania
$26.4M -$6.31M -1,856,870 -19%
BCM
3
Brown Capital Management
Maryland
$24.2M -$1.2M -353,972 -5%
HA
4
HHLR Advisors
Cayman Islands
$22.6M – – –
TCM
5
Topline Capital Management
California
$17.8M +$12.8M +3,760,485 +256%
State Street
6
State Street
Massachusetts
$14.2M -$709K -208,411 -5%
Dimensional Fund Advisors
7
Dimensional Fund Advisors
Texas
$11.7M +$2.04M +600,997 +21%
Geode Capital Management
8
Geode Capital Management
Massachusetts
$9.28M +$146K +42,916 +2%
New York State Common Retirement Fund
9
New York State Common Retirement Fund
New York
$7.1M – – –
RA
10
Royce & Associates
New York
$4.73M +$2.8M +823,987 +146%
AQR Capital Management
11
AQR Capital Management
Connecticut
$4.21M +$1.99M +585,116 +90%
Morgan Stanley
12
Morgan Stanley
New York
$3.91M +$1.38M +404,644 +54%
Northern Trust
13
Northern Trust
Illinois
$3.73M -$189K -55,573 -5%
Renaissance Technologies
14
Renaissance Technologies
New York
$3.61M +$1.28M +375,539 +55%
Goldman Sachs
15
Goldman Sachs
New York
$3.46M -$481K -141,444 -12%
Millennium Management
16
Millennium Management
New York
$3.14M +$1.46M +429,335 +87%
Charles Schwab
17
Charles Schwab
California
$3.09M -$664K -195,299 -18%
Jacobs Levy Equity Management
18
Jacobs Levy Equity Management
New Jersey
$3.02M +$612K +179,857 +25%
Bank of New York Mellon
19
Bank of New York Mellon
New York
$2.38M +$25.5K +7,511 +1%
UBS Group
20
UBS Group
Switzerland
$2.15M +$69.8K +20,524 +3%
Citadel Advisors
21
Citadel Advisors
Florida
$2.1M +$49.5K +14,568 +2%
Principal Financial Group
22
Principal Financial Group
Iowa
$1.95M +$176K +51,644 +10%
JPMorgan Chase & Co
23
JPMorgan Chase & Co
New York
$1.46M -$820K -241,205 -36%
N
24
Numerai
California
$1.44M +$1.44M +422,318 New
Ameriprise
25
Ameriprise
Minnesota
$1.4M +$459K +134,963 +49%
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