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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 %
RIL
176
Rothschild Investment LLC
Illinois
$400 -$400 -20 -50%
MTIC
177
Missouri Trust & Investment Company
Missouri
$380 – – –
BIG
178
Brooklyn Investment Group
New York
$221 +$221 +11 New
FFA
179
Farther Finance Advisors
California
$99 – – –
HNB
180
Huntington National Bank
Ohio
$20 – – –
SCM
181
Soleus Capital Management
Connecticut
– -$6.74M -252,917 Closed
NCGI
182
Next Century Growth Investors
Minnesota
– -$6.27M -235,214 Closed
IECM
183
Intrinsic Edge Capital Management
Illinois
– -$6.2M -232,711 Closed
CAPTRUST Financial Advisors
184
CAPTRUST Financial Advisors
North Carolina
– -$5.74M -215,322 Closed
GIM
185
Granahan Investment Management
Massachusetts
– -$2.95M -110,824 Closed
Ohio Public Employees Retirement System (OPERS)
186
Ohio Public Employees Retirement System (OPERS)
Ohio
– -$1.98M -74,132 Closed
LCG
187
Lisanti Capital Growth
New York
– -$1.23M -46,265 Closed
Arrowstreet Capital
188
Arrowstreet Capital
Massachusetts
– -$770K -28,903 Closed
LPL Financial
189
LPL Financial
California
– -$614K -23,043 Closed
HA
190
Huntleigh Advisors
Missouri
– -$591K -22,167 Closed
YIH
191
Y-Intercept (HK)
Hong Kong
– -$582K -21,839 Closed
ACM
192
Aquatic Capital Management
Illinois
– -$539K -20,218 Closed
N
193
Natixis
France
– -$522K -19,600 Closed
ADIM
194
Alpha DNA Investment Management
Maryland
– -$404K -15,174 Closed
CAM
195
Cresset Asset Management
Illinois
– -$331K -12,405 Closed
JF
196
Jump Financial
Illinois
– -$304K -11,400 Closed
FRM
197
Fox Run Management
Connecticut
– -$286K -10,716 Closed
LCM
198
Legato Capital Management
California
– -$277K -10,395 Closed
B
199
Bailard
California
– -$264K -9,900 Closed
Group One Trading
200
Group One Trading
Illinois
– -$261K -9,796 Closed
5 6 7
8
9