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Cytek Biosciences
CTKB

153 hedge funds and large institutions have $309M invested in Cytek Biosciences in 2025 Q3 according to their latest regulatory filings, with 20 funds opening new positions, 62 increasing their positions, 53 reducing their positions, and 24 closing their positions.

New
Increased
Maintained
Reduced
Closed

17% more repeat investments, than reductions

Existing positions increased: 62 | Existing positions reduced: 53

14% more capital invested

Capital invested by funds: $270M → $309M (+$38.6M)

0.2% more ownership

Funds ownership: 62.68% → 62.88% (+0.2%)

3% less funds holding

Funds holding: 158 → 153 (-5)

17% less first-time investments, than exits

New positions opened: 20 | Existing positions closed: 24

100% less call options, than puts

Call options by funds: $0 | Put options by funds: $2K

Holders
153
Holders Change
-5
Holders Change %
-3.16%
% of All Funds
2.01%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
% of All Funds
0.01%
New
20
Increased
62
Reduced
53
Closed
24
Calls
–
Puts
$2K
Net Calls
-$2K
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Wellington Management Group
Wellington Management Group
Massachusetts
+$9.54M
2
Millennium Management
Millennium Management
New York
+$9.36M
3
TCM
Topline Capital Management
California
+$6.43M
4
Goldman Sachs
Goldman Sachs
New York
+$2.71M
5
RA
Royce & Associates
New York
+$1.4M

Top Sellers

Rank Fund Capital Flow
1
BCM
Brown Capital Management
Maryland
-$8.08M
2
New York State Common Retirement Fund
New York State Common Retirement Fund
New York
-$6.6M
3
Vanguard Group
Vanguard Group
Pennsylvania
-$3.12M
4
Citadel Advisors
Citadel Advisors
Florida
-$2.01M
5
BlackRock
BlackRock
New York
-$1.83M
Name Holding Trade Value Shares
Change 		Change in
Stake
VOYA Investment Management
51
VOYA Investment Management
Georgia
$403K +$292K +77,702 +203%
Prudential Financial
52
Prudential Financial
New Jersey
$391K – – –
GCP
53
GSA Capital Partners
United Kingdom
$379K +$278K +73,932 +210%
Creative Planning
54
Creative Planning
Kansas
$377K +$199K +52,954 +95%
N
55
Numerai
California
$370K -$1.19M -315,823 -75%
CAU
56
Caxton Associates (UK)
$324K -$37.8K -10,057 -10%
PP
57
PDT Partners
New York
$319K – – –
Wells Fargo
58
Wells Fargo
California
$314K +$56.1K +14,950 +20%
Deutsche Bank
59
Deutsche Bank
Germany
$309K +$44.9K +11,972 +16%
Franklin Resources
60
Franklin Resources
California
$301K +$38.2K +10,180 +13%
ACM
61
Aquatic Capital Management
Illinois
$292K +$240K +63,900 +316%
Citadel Advisors
62
Citadel Advisors
Florida
$286K -$2.01M -534,781 -87%
Ohio Public Employees Retirement System (OPERS)
63
Ohio Public Employees Retirement System (OPERS)
Ohio
$281K +$45.8K +12,200 +18%
Thrivent Financial for Lutherans
64
Thrivent Financial for Lutherans
Minnesota
$274K +$13.1K +3,495 +5%
XT
65
XTX Topco
Cayman Islands
$252K -$161K -42,855 -37%
MIM
66
MetLife Investment Management
New Jersey
$242K -$12.8K -3,418 -5%
ECM
67
ExodusPoint Capital Management
New York
$219K -$645K -171,727 -73%
PAM
68
Panagora Asset Management
Massachusetts
$217K -$847K -225,664 -78%
T. Rowe Price Associates
69
T. Rowe Price Associates
Maryland
$216K +$19.9K +5,314 +9%
Two Sigma Advisers
70
Two Sigma Advisers
New York
$214K +$231K +61,600 New
SOADOR
71
State of Alaska Department of Revenue
Alaska
$213K +$2.09K +556 +0.9%
SG Americas Securities
72
SG Americas Securities
New York
$207K +$176K +46,956 +371%
State of Tennessee, Department of Treasury
73
State of Tennessee, Department of Treasury
Tennessee
$204K +$128K +34,173 +138%
Mirae Asset Global ETFs Holdings
74
Mirae Asset Global ETFs Holdings
Hong Kong
$192K -$34.3K -9,135 -14%
Carson Wealth (CWM LLC)
75
Carson Wealth (CWM LLC)
Nebraska
$191K +$36.2K +9,646 +21%
1 2
3
4 5

CTKB Hedge Fund Activity: Q3 2025 in Review

153 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Cytek Biosciences (CTKB) for Q3 2025, worth a combined $309M — up 14% from $270M a quarter earlier.

Sellers outnumbered buyers: 24 funds closed out of CTKB and 20 opened new positions — a net loss of 4 holders — while 53 trimmed existing stakes and 62 added.

The largest buyer was Wellington Management Group, opening a new position worth an estimated $9.54M. The largest seller was Brown Capital Management, cutting an estimated $8.08M.

  • 153 institutional investors held Cytek Biosciences (CTKB) as of Q3 2025, down from 158 in Q2 2025.
  • Funds reported $309M of Cytek Biosciences stock for Q3 2025, up 14% quarter-over-quarter.
  • 20 funds opened new Cytek Biosciences positions in Q3 2025 and 24 closed out, a net change of -4 holders.
  • The largest Cytek Biosciences buyer in Q3 2025 was Wellington Management Group, an estimated $9.54M added.
  • The largest Cytek Biosciences seller in Q3 2025 was Brown Capital Management, an estimated $8.08M sold.

Based on aggregated 13F filings for Q3 2025.