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Castle Biosciences
CSTL

130 hedge funds and large institutions have $317M invested in Castle Biosciences in 2023 Q2 according to their latest regulatory filings, with 16 funds opening new positions, 70 increasing their positions, 25 reducing their positions, and 34 closing their positions.

New
Increased
Maintained
Reduced
Closed

180% more repeat investments, than reductions

Existing positions increased: 70 | Existing positions reduced: 25

2.94% more ownership

Funds ownership: 83.12% → 86.07% (+2.9%)

12% less funds holding

Funds holding: 148 → 130 (-18)

33% less funds holding in top 10

Funds holding in top 10: 3 → 2 (-1)

37% less capital invested

Capital invested by funds: $502M → $317M (-$185M)

51% less call options, than puts

Call options by funds: $325K | Put options by funds: $664K

53% less first-time investments, than exits

New positions opened: 16 | Existing positions closed: 34

Holders
130
Holders Change
-18
Holders Change %
-12.16%
% of All Funds
2.04%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.03%
New
16
Increased
70
Reduced
25
Closed
34
Calls
$325K
Puts
$664K
Net Calls
-$339K
Net Calls Change
-$1.02M

Top Buyers

Rank Fund Capital Flow
1
GIM
Granahan Investment Management
Massachusetts
+$26.9M
2
Jacobs Levy Equity Management
Jacobs Levy Equity Management
New Jersey
+$5.23M
3
Millennium Management
Millennium Management
New York
+$4.26M
4
Ameriprise
Ameriprise
Minnesota
+$4.11M
5
ICM
Invenomic Capital Management
Massachusetts
+$3.88M

Top Sellers

Rank Fund Capital Flow
1
Citadel Advisors
Citadel Advisors
Florida
-$12.3M
2
EIM
Essex Investment Management
Massachusetts
-$10.9M
3
GF
Greenhouse Funds
Maryland
-$6.96M
4
Point72 Asset Management
Point72 Asset Management
Connecticut
-$6.47M
5
DM
Deerfield Management
New York
-$6.18M
Name Holding Trade Value Shares
Change 		Change in
Stake
GRP
126
Global Retirement Partners
California
$370 – – –
MTIC
127
Missouri Trust & Investment Company
Missouri
$261 – – –
AAP
128
Arax Advisory Partners
Colorado
$165 – – –
IA
129
IFP Advisors
Florida
$151 – – –
CTA
130
Colonial Trust Advisors
South Carolina
$82 – – –
EIM
131
Essex Investment Management
Massachusetts
– -$10.9M -480,918 Closed
Point72 Asset Management
132
Point72 Asset Management
Connecticut
– -$6.47M -284,847 Closed
DM
133
Deerfield Management
New York
– -$6.18M -272,135 Closed
RI
134
RTW Investments
New York
– -$5.87M -258,498 Closed
Norges Bank
135
Norges Bank
Norway
– -$1.4M -61,600 Closed
ZIM
136
Zacks Investment Management
Illinois
– -$1.05M -46,030 Closed
Luther King Capital Management (LKCM)
137
Luther King Capital Management (LKCM)
Texas
– -$806K -35,481 Closed
GCM
138
Graham Capital Management
Connecticut
– -$705K -31,011 Closed
LCM
139
Legato Capital Management
California
– -$626K -27,534 Closed
PCM
140
Prelude Capital Management
New York
– -$526K -23,144 Closed
CS
141
Candriam SCA
Luxembourg
– -$477K -22,812 Closed
EGM
142
Engineers Gate Manager
New York
– -$513K -22,560 Closed
CP
143
Covenant Partners
Tennessee
– -$483K -21,279 Closed
Los Angeles Capital Management
144
Los Angeles Capital Management
California
– -$474K -20,863 Closed
XT
145
XTX Topco
Cayman Islands
– -$369K -16,254 Closed
HF
146
HRT Financial
New York
– -$340K -15,008 Closed
MFIM
147
Mesirow Financial Investment Management
Illinois
– -$328K -14,431 Closed
OQS
148
Occudo Quantitative Strategies
Florida
– -$324K -14,280 Closed
Baird Financial Group
149
Baird Financial Group
Wisconsin
– -$260K -11,455 Closed
State Board of Administration of Florida Retirement System
150
State Board of Administration of Florida Retirement System
Florida
– -$249K -10,954 Closed
3 4 5
6
7

CSTL Hedge Fund Activity: Q2 2023 in Review

130 of the 6,369 institutional investors tracked by Wall St. Rank reported a position in Castle Biosciences (CSTL) for Q2 2023, worth a combined $317M — down 37% from $502M a quarter earlier.

Sellers outnumbered buyers: 34 funds closed out of CSTL and 16 opened new positions — a net loss of 18 holders — while 25 trimmed existing stakes and 70 added.

The largest buyer was Granahan Investment Management, adding an estimated $26.9M. The largest seller was Citadel Advisors, cutting an estimated $12.3M.

  • 130 institutional investors held Castle Biosciences (CSTL) as of Q2 2023, down from 148 in Q1 2023.
  • Funds reported $317M of Castle Biosciences stock for Q2 2023, down 37% quarter-over-quarter.
  • 16 funds opened new Castle Biosciences positions in Q2 2023 and 34 closed out, a net change of -18 holders.
  • The largest Castle Biosciences buyer in Q2 2023 was Granahan Investment Management, an estimated $26.9M added.
  • The largest Castle Biosciences seller in Q2 2023 was Citadel Advisors, an estimated $12.3M sold.

Based on aggregated 13F filings for Q2 2023.