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Castle Biosciences Inc

CSTL
Exchange
Nasdaq
Industry
Services-Medical Laboratories
SEC CIK
0001447362

In the last 90 days, Castle Biosciences Inc insiders filed 0 open-market purchases and 21 sales; 176 institutions reported holding it in 13F filings for Q2 2026, worth $653.8M in total; no superinvestor holds it.

Q4 2023 vs. Q3 2023

How the institutions holding Castle Biosciences Inc changed between Q3 2023 and Q4 2023.

All holders in Q4 2023All holders in Q3 2023

13F holders of CSTL: Q3 2023 compared with Q4 2023
MeasureQ3 2023Of which not filed for Q4 2023Q4 2023Change
Holders1351153+19
Shares23.2M10.0K23.9M+742.8K (+3.2%)
Value$391.0M$169.3K$515.4M+$124.6M (+31.9%)

1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so the changes leave them out.

New holders (37)

Institutions that held Castle Biosciences Inc at the end of Q4 2023 but not at the end of Q3 2023.

Institutions new to CSTL in Q4 2023
InstitutionSharesValue% of portfolio
Next Century Growth Investors LLC213,886$4.62M0.45%
Tritonpoint Wealth, LLC94,356$2.04M0.20%
Acadian Asset Management LLC91,381$1.97M0.01%
Polar Asset Management Partners Inc.53,200$1.15M0.03%
D. E. Shaw & Co., Inc.52,364$1.13M0.00%
Marshall Wace, LLP44,900$968.9K0.00%
Engineers Gate Manager LP31,267$674.7K0.02%
Susquehanna International Group, LLP26,600$574.0K0.00%
Fan Yu22,503$485.6K2.43%
State of Wisconsin Investment Board19,915$429.8K0.00%
Graham Capital Management, L.P.14,880$321.1K0.01%
XTX Topco Ltd14,145$305.2K0.07%
Centiva Capital, LP12,558$271.0K0.02%
Corton Capital Inc.12,343$266.4K0.08%
Prelude Capital Management, LLC12,193$263.1K0.02%
Keebeck Alpha, LP12,193$263.1K0.21%
Fox Run Management, L.L.C.12,150$262.2K0.07%
Y-Intercept (Hong Kong) Ltd10,593$228.6K0.02%
Lido Advisors, LLC10,524$227.1K0.00%
Voya Investment Management LLC10,187$219.8K0.00%
Birchview Capital, LP10,000$215.8K0.17%
Janus Henderson Group PLC9,270$200.1K0.00%
WuXi AppTec Co., Ltd.6,636$143.2K0.37%
O'Dell Group, LLC2,041$44.0K0.01%
Coppell Advisory Solutions LLC1,190$25.7K0.01%
RiverPark Advisors, LLC619$13.4K0.01%
Arcadia Investment Management Corp522$11.3K0.00%
MCF Advisors LLC258$5.57K0.00%
GWM Advisors LLC250$5.39K0.00%
Sound Income Strategies, LLC250$5.39K0.00%
Principal Securities, Inc.183$3.95K0.00%
Lindbrook Capital, LLC172$3.71K0.00%
BFSG, LLC90$1.94K0.00%
Valley National Advisers Inc65$1.00K0.00%
GAMMA Investing LLC21$4850.00%
Fairman Group, LLC13$2810.00%
Farther Finance Advisors, LLC5$1080.00%

Sold out (18)

Institutions that held Castle Biosciences Inc at the end of Q3 2023 and filed for Q4 2023 without it.

Institutions that sold out of CSTL in Q4 2023
InstitutionShares, Q3 2023Value, Q3 2023
Walleye Capital LLC170,786$2.88M
Point72 Asset Management, L.P.44,200$746.5K
Alpha DNA Investment Management LLC29,399$496.6K
Signaturefd, LLC28,358$479.0K
AE Wealth Management LLC26,182$442.2K
Mach-1 Financial Group, Inc.26,034$439.7K
Channing Capital Management, LLC13,403$226.4K
Verition Fund Management LLC12,942$218.6K
Commonwealth Equity Services, LLC11,274$190.0K
BluePath Capital Management, LLC1,811$30.6K
Point72 Middle East FZE695$11.7K
Simplex Trading, LLC260$4.00K
Private Trust Co NA60$1.01K
Park Place Capital Corp53$895
Allworth Financial LP41$693
Comerica Bank21$355
SRS Capital Advisors, Inc.12$203
CWM, LLC25$0

Not filed for Q4 2023 yet (1)

Institutions that held Castle Biosciences Inc at the end of Q3 2023 and haven't filed a 13F for Q4 2023. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding CSTL in Q3 2023 that haven't filed for Q4 2023
InstitutionShares, Q3 2023Value, Q3 2023
Claybrook Capital, LLC10,026$169.3K