CSTL icon

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 %
PCM
76
Perkins Capital Management
Minnesota
$680K -$4K -200 -0.6%
AllianceBernstein
77
AllianceBernstein
Tennessee
$668K – – –
Invesco
78
Invesco
Georgia
$646K +$94.4K +4,717 +17%
Jane Street
79
Jane Street
New York
$614K -$575K -28,707 -48%
Verition Fund Management
80
Verition Fund Management
Connecticut
$614K +$433K +21,623 +239%
SGI
81
Summit Global Investments
Utah
$613K +$43.3K +2,164 +8%
JPMorgan Chase & Co
82
JPMorgan Chase & Co
New York
$612K -$1.55M -77,359 -72%
HF
83
HRT Financial
New York
$566K +$318K +15,916 +129%
PA
84
Parallel Advisors
California
$551K -$8.02K -402 -1%
Mackenzie Financial
85
Mackenzie Financial
Ontario, Canada
$550K +$129K +6,440 +31%
Legal & General Group
86
Legal & General Group
United Kingdom
$519K -$721 -36 -0.1%
California State Teachers Retirement System (CalSTRS)
87
California State Teachers Retirement System (CalSTRS)
California
$493K – – –
TC
88
TownSquare Capital
Utah
$476K +$31.7K +1,584 +7%
T. Rowe Price Associates
89
T. Rowe Price Associates
Maryland
$475K +$20.2K +1,008 +4%
YF
90
Yu Fan
$451K – – –
Truist Financial
91
Truist Financial
North Carolina
$447K +$20.1K +1,005 +5%
Jacobs Levy Equity Management
92
Jacobs Levy Equity Management
New Jersey
$426K -$2.27M -113,483 -84%
DTL
93
Dynamic Technology Lab
Singapore
$425K +$72.2K +3,605 +20%
Cerity Partners
94
Cerity Partners
New York
$423K +$423K +21,138 New
HSA
95
Hussman Strategic Advisors
Maryland
$420K -$1.05M -52,500 -71%
EC
96
EntryPoint Capital
New York
$409K -$174K -8,712 -30%
AACP
97
Advantage Alpha Capital Partners
California
$396K +$396K +19,805 New
Balyasny Asset Management
98
Balyasny Asset Management
Illinois
$395K +$395K +19,730 New
XT
99
XTX Topco
Cayman Islands
$393K +$393K +19,628 New
HSBC Holdings
100
HSBC Holdings
United Kingdom
$391K -$915 -46 -0.2%
2 3
4
5 6