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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.

Q1 2023 vs. Q4 2022

How the institutions holding Castle Biosciences Inc changed between Q4 2022 and Q1 2023.

All holders in Q1 2023All holders in Q4 2022

13F holders of CSTL: Q4 2022 compared with Q1 2023
MeasureQ4 2022Of which not filed for Q1 2023Q1 2023Change
Holders1532148−3
Shares22.2M335.1K22.1M+254.8K (+1.2%)
Value$522.0M$7.89M$501.9M−$12.1M (−2.4%)

2 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so the changes leave them out.

New holders (15)

Institutions that held Castle Biosciences Inc at the end of Q1 2023 but not at the end of Q4 2022.

Institutions new to CSTL in Q1 2023
InstitutionSharesValue% of portfolio
Captrust Financial Advisors168,732$3.83M0.02%
SEI Investments Co96,327$2.19M0.00%
Invenomic Capital Management LP87,252$1.98M0.11%
Orion Portfolio Solutions, LLC29,665$674.0K0.01%
ExodusPoint Capital Management, LP22,481$511.0K0.01%
XTX Topco Ltd16,254$369.3K0.08%
HRT Financial LP15,008$340.0K0.00%
Mesirow Financial Investment Management, Inc.14,431$327.9K1.36%
Susquehanna International Group, LLP11,717$266.2K0.00%
Janus Henderson Group PLC9,296$211.0K0.00%
Simplex Trading, LLC3,138$71.0K0.00%
Nelson, Van Denburg & Campbell Wealth Management Group, LLC199$4.52K0.00%
TCI Wealth Advisors, Inc.164$3.73K0.00%
C M Bidwell & Associates Ltd75$1.70K0.00%
Baystate Wealth Management LLC50$1.14K0.00%

Sold out (18)

Institutions that held Castle Biosciences Inc at the end of Q4 2022 and filed for Q1 2023 without it.

Not filed for Q1 2023 yet (2)

Institutions that held Castle Biosciences Inc at the end of Q4 2022 and haven't filed a 13F for Q1 2023. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding CSTL in Q4 2022 that haven't filed for Q1 2023
InstitutionShares, Q4 2022Value, Q4 2022
Monarch Partners Asset Management LLC170,195$4.01M
Trustcore Financial Services, LLC164,897$3.88M