Skip to main content

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 20 sales; 176 institutions reported holding it in 13F filings for Q2 2026, worth $653.8M in total; no superinvestor holds it.

Q4 2021 vs. Q3 2021

How the institutions holding Castle Biosciences Inc changed between Q3 2021 and Q4 2021.

All holders in Q4 2021All holders in Q3 2021

13F holders of CSTL: Q3 2021 compared with Q4 2021
MeasureQ3 2021Of which not filed for Q4 2021Q4 2021Change
Holders1882159−27
Shares21.5M4.69K21.5M−44.4K (−0.2%)
Value$1.42B$311.0K$918.6M−$503.7M (−35.4%)

2 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so the changes leave them out.

New holders (21)

Institutions that held Castle Biosciences Inc at the end of Q4 2021 but not at the end of Q3 2021.

Institutions new to CSTL in Q4 2021
InstitutionSharesValue% of portfolio
Allspring Global Investments Holdings, LLC452,728$19.4M0.02%
Palisade Capital Management LLC352,441$15.1M0.31%
Renaissance Technologies LLC134,281$5.76M0.01%
Stanley-Laman Group, Ltd.39,974$1.71M0.20%
Squarepoint Ops LLC34,693$1.49M0.01%
Parian Global Management LP29,498$1.26M1.15%
Walleye Capital LLC13,443$576.0K0.02%
Susquehanna International Group, LLP10,707$459.0K0.00%
AlphaCentric Advisors LLC9,500$407.0K0.12%
Dynamic Technology Lab Private Ltd8,710$373.0K0.04%
First Republic Investment Management, Inc.7,629$327.0K0.00%
NinePointTwo Capital6,965$298.0K0.10%
Aristides Capital LLC6,910$296.0K0.17%
Commerce Bank5,260$226.0K0.00%
Ensign Peak Advisors, Inc890$38.0K0.00%
Confluence Wealth Services, Inc.127$5.00K0.00%
Huntington National Bank42$2.00K0.00%
SRS Capital Advisors, Inc.12$1.00K0.00%
Missouri Trust & Investment Co19$1.00K0.00%
CWM, LLC2$00.00%
Covestor Ltd7$00.00%

Sold out (48)

Institutions that held Castle Biosciences Inc at the end of Q3 2021 and filed for Q4 2021 without it.

Institutions that sold out of CSTL in Q4 2021
InstitutionShares, Q3 2021Value, Q3 2021
Driehaus Capital Management LLC358,200$23.8M
Intrinsic Edge Capital Management LLC147,895$9.84M
Castleark Management LLC147,867$9.83M
CastleArk Alternatives, LLC147,867$9.83M
Calamos Advisors LLC131,984$8.78M
M&G Investment Management Ltd95,351$6.39M
Polar Asset Management Partners Inc.95,504$6.35M
Russell Investments Group, Ltd.88,774$5.90M
Fred Alger Management, LLC80,293$5.34M
Altium Capital Management LP72,500$4.82M
Bank of Montreal44,818$3.30M
Lisanti Capital Growth, LLC35,855$2.38M
Voloridge Investment Management, LLC18,169$1.21M
Jane Street Group, LLC16,423$1.09M
Martingale Asset Management L P13,555$902.0K
Advisory Research Inc12,368$822.0K
SEI Investments Co9,374$624.0K
Old Mission Capital LLC7,500$499.0K
D. E. Shaw & Co., Inc.7,104$472.0K
Ergoteles LLC5,400$359.0K
PDT Partners, LLC5,351$356.0K
Level Four Advisory Services, LLC5,265$350.0K
Commonwealth Equity Services, LLC5,071$337.0K
HRT Financial LP4,725$314.0K
Winton Group Ltd4,607$306.0K
Oppenheimer Asset Management Inc.4,374$291.0K
State Board of Administration of Florida Retirement System4,016$267.0K
MML Investors Services, LLC3,712$247.0K
Amalgamated Bank3,709$247.0K
Versor Investments LP3,700$246.0K
TownSquare Capital, LLC3,702$246.0K
Park Avenue Securities LLC3,670$244.0K
Cherry Creek Investment Advisors, Inc.3,585$238.0K
Los Angeles Capital Management LLC3,282$218.0K
M&T Bank Corp3,186$212.0K
Teacher Retirement System of Texas3,193$212.0K
First Quadrant L P2,501$166.0K
Harbour Investments, Inc.950$63.0K
O'Shaughnessy Asset Management, LLC606$40.0K
Penserra Capital Management LLC575$38.0K
Clearstead Advisors, LLC116$8.00K
Group One Trading, L.P.100$7.00K
SOA Wealth Advisors, LLC.108$7.00K
Geneos Wealth Management Inc.100$6.00K
Albion Financial Group10$1.00K
Charter Oak Capital Management, LLC11$1.00K
FMR LLC2$0
Global Wealth Management Investment Advisory, Inc.5$0

Not filed for Q4 2021 yet (2)

Institutions that held Castle Biosciences Inc at the end of Q3 2021 and haven't filed a 13F for Q4 2021. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding CSTL in Q3 2021 that haven't filed for Q4 2021
InstitutionShares, Q3 2021Value, Q3 2021
First Mercantile Trust Co4,650$309.0K
Berman Capital Advisors, LLC43$2.00K