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Castle Biosciences
CSTL

Overview Fund Activity

180 hedge funds and large institutions have $516M invested in Castle Biosciences in 2025 Q1 according to their latest regulatory filings, with 30 funds opening new positions, 76 increasing their positions, 54 reducing their positions, and 43 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
180
Holders Change
-17
Holders Change %
-8.63%
% of All Funds
2.45%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.03%
New
30
Increased
76
Reduced
54
Closed
43
Calls
$200K
Puts
$112K
Net Calls
+$88K
Net Calls Change
-$2.62M

Top Buyers

1
Schroder Investment Management Group
1
Schroder Investment Management Group
United Kingdom
$11.9M
2
PWAM
2
Park West Asset Management
California
$11.1M
3
PCM
3
Portolan Capital Management
Massachusetts
$25.3M
4
B
4
Braidwell
Connecticut
$7.31M
5
Allianz Asset Management
5
Allianz Asset Management
Germany
$12.8M

Top Sellers

1
WA
1
Wasatch Advisors
Utah
$20M
2
UBS Group
2
UBS Group
Switzerland
$976K
3
Citadel Advisors
3
Citadel Advisors
Florida
$5.17M
4
BG
4
Bellevue Group
Switzerland
$6.03M
5
SCM
5
Soleus Capital Management
Connecticut
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
SPA
101
Sherbrooke Park Advisers
New York
$389K +$141K +7,067 +57%
Russell Investments Group
102
Russell Investments Group
United Kingdom
$373K +$229K +11,457 +159%
SO
103
STRS Ohio
Ohio
$366K – – –
II
104
Inspire Investing
Idaho
$343K -$573K -28,597 -63%
OHIS
105
Oak Harvest Investment Services
Texas
$338K +$183K +9,156 +118%
CC
106
Centiva Capital
New York
$336K -$124K -6,213 -27%
HCA
107
Harbor Capital Advisors
Illinois
$332K -$2.04M -101,905 -86%
CAU
108
Caxton Associates (UK)
$329K +$329K +16,440 New
Wells Fargo
109
Wells Fargo
California
$327K +$19.5K +972 +6%
IIM
110
INTECH Investment Management
Florida
$322K +$90.1K +4,500 +39%
MIM
111
MetLife Investment Management
New Jersey
$315K -$5.77K -288 -2%
Mirae Asset Global ETFs Holdings
112
Mirae Asset Global ETFs Holdings
Hong Kong
$309K +$13.1K +655 +4%
QT
113
Quantbot Technologies
New York
$306K +$306K +15,287 New
FBT
114
First Bank & Trust
South Dakota
$303K +$130K +6,512 +76%
Man Group
115
Man Group
United Kingdom
$291K +$24.3K +1,212 +9%
SI
116
Stephens Inc
Arkansas
$273K -$16K -800 -6%
SQA
117
Simon Quick Advisors
New Jersey
$272K +$400 +20 +0.1%
M1FG
118
Mach-1 Financial Group
Arkansas
$267K +$267K +13,313 New
DWM
119
Diversify Wealth Management
Utah
$260K +$14.2K +717 +6%
WG
120
Winton Group
United Kingdom
$258K +$258K +12,869 New
CF
121
Corebridge Financial
Texas
$258K +$120 +6 +0%
BHCM
122
Brevan Howard Capital Management
Jersey
$244K +$244K +12,205 New
Zurich Cantonal Bank
123
Zurich Cantonal Bank
Switzerland
$242K -$31.3K -1,561 -11%
Universal-Beteiligungs- und Servicegesellschaft
124
Universal-Beteiligungs- und Servicegesellschaft
Germany
$235K +$235K +11,753 New
MF
125
Magnetar Financial
Illinois
$225K +$225K +11,226 New
3 4
5
6 7