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

13F holders, Q4 2024

Institutional positions in Castle Biosciences Inc as of Dec 31, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
197
+13 vs. Q3 2024
Shares held
26.5M
+681.4K (+2.6%) vs. Q3 2024
Total value
$706.4M
−$30.5M (−4.1%) vs. Q3 2024
New holders
40
67 more added
Sold out
27
65 more reduced

1 institution that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2024: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting CSTL on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2024: 197 institutions
Q1 2021: 175 institutionsQ2 2021: 182 institutionsQ3 2021: 188 institutionsQ4 2021: 159 institutionsQ1 2022: 160 institutionsQ2 2022: 146 institutionsQ3 2022: 157 institutionsQ4 2022: 153 institutionsQ1 2023: 148 institutionsQ2 2023: 130 institutionsQ3 2023: 135 institutionsQ4 2023: 153 institutionsQ1 2024: 151 institutionsQ2 2024: 159 institutionsQ3 2024: 185 institutionsQ4 2024: 197 institutionsQ1 2025: 180 institutionsQ2 2025: 152 institutionsQ3 2025: 173 institutionsQ4 2025: 195 institutionsQ1 2026: 186 institutionsQ2 2026: 176 institutions
Value heldQ4 2024: $706.4M
Q1 2021: $1.46BQ2 2021: $1.52BQ3 2021: $1.42BQ4 2021: $918.6MQ1 2022: $1.02BQ2 2022: $495.0MQ3 2022: $569.8MQ4 2022: $522.0MQ1 2023: $501.9MQ2 2023: $316.6MQ3 2023: $391.0MQ4 2023: $515.4MQ1 2024: $553.2MQ2 2024: $549.4MQ3 2024: $736.9MQ4 2024: $706.4MQ1 2025: $516.3MQ2 2025: $541.8MQ3 2025: $608.3MQ4 2025: $1.06BQ1 2026: $677.8MQ2 2026: $653.8M
Institutions holding CSTL and their total value by quarter
QuarterHoldersValue
Q2 2026176$653.8M
Q1 2026186$677.8M
Q4 2025195$1.06B
Q3 2025173$608.3M
Q2 2025152$541.8M
Q1 2025180$516.3M
Q4 2024197$706.4M
Q3 2024185$736.9M
Q2 2024159$549.4M
Q1 2024151$553.2M
Q4 2023153$515.4M
Q3 2023135$391.0M
Q2 2023130$316.6M
Q1 2023148$501.9M
Q4 2022153$522.0M
Q3 2022157$569.8M
Q2 2022146$495.0M
Q1 2022160$1.02B
Q4 2021159$918.6M
Q3 2021188$1.42B
Q2 2021182$1.52B
Q1 2021175$1.46B

Institutions, Q4 2024

Shares, value and share of portfolio for each institution holding Castle Biosciences Inc; share changes are against Q3 2024.

Institutions holding CSTL in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Nelson, Van Denburg & Campbell Wealth Management Group, LLC1$260.00%00.0%Unchanged
Huntington National Bank1$270.00%00.0%Unchanged
True Wealth Design, LLC1$270.00%+1New
Farther Finance Advisors, LLC5$1330.00%00.0%Unchanged
Aster Capital Management (DIFC) Ltd9$2400.00%−106−92.2%Reduced
EverSource Wealth Advisors, LLC9$2400.00%+9New
Larson Financial Group LLC12$3200.00%+12New
Advisor Group Holdings, Inc.14$3730.00%−5,134−99.7%Reduced
Missouri Trust & Investment Co19$5060.00%00.0%Unchanged
Jones Financial Companies LLLP25$6660.00%00.0%Unchanged
Steward Partners Investment Advisory, LLC31$8260.00%+31New
SRS Capital Advisors, Inc.31$8270.00%00.0%Unchanged
Amundi26$8510.00%+26New
Rothschild Investment LLC40$1.07K0.00%+5+14.3%Added
SBI Securities Co., Ltd.50$1.33K0.00%+50New
CIBC Private Wealth Group, LLC52$1.70K0.00%+52New
Daiwa Securities Group Inc.86$2.00K0.00%00.0%Unchanged
Principal Securities, Inc.90$2.40K0.00%00.0%Unchanged
Massmutual Trust Co FSB90$2.40K0.00%00.0%Unchanged
BFSG, LLC90$2.40K0.00%00.0%Unchanged
Federated Hermes, Inc.114$3.04K0.00%+114New
IFP Advisors, Inc161$4.29K0.00%+161New
Lindbrook Capital, LLC172$4.58K0.00%−16−8.5%Reduced
Hanseatic Management Services Inc203$5.41K0.01%00.0%Unchanged
Comerica Bank207$5.52K0.00%+207New
GAMMA Investing LLC222$5.92K0.00%+49+28.3%Added
GWM Advisors LLC247$6.58K0.00%+247New
MCF Advisors LLC258$6.88K0.00%00.0%Unchanged
Nisa Investment Advisors, LLC445$11.9K0.00%00.0%Unchanged
CWM, LLC443$12.0K0.00%+124+38.9%Added
Sterling Capital Management LLC572$15.2K0.00%+500+694.4%Added
GF Fund Management Co. Ltd.588$15.7K0.00%+588New
Amalgamated Bank833$22.0K0.00%00.0%Unchanged
Canada Pension Plan Investment Board900$24.0K0.00%+900New
Arcadia Investment Management Corp904$24.1K0.00%+904New
Covestor Ltd936$25.0K0.02%+936New
Mirae Asset Global Investments Co., Ltd.933$25.0K0.00%−70−7.0%Reduced
FMR LLC1,081$28.8K0.00%+63+6.2%Added
Global Retirement Partners, LLC1,100$29.3K0.00%00.0%Unchanged
US Bancorp1,202$32.0K0.00%−3,413−74.0%Reduced
Point72 (DIFC) Ltd1,234$32.9K0.00%−3,661−74.8%Reduced
R Squared Ltd1,590$42.4K0.04%+1,590New
Coppell Advisory Solutions LLC1,924$51.3K0.01%+1+0.1%Added
First Horizon Advisors, Inc.2,010$53.6K0.00%−60−2.9%Reduced
Ameritas Investment Partners, Inc.2,450$65.3K0.00%00.0%Unchanged
C M Bidwell & Associates Ltd2,698$71.9K0.04%+98+3.8%Added
Simplex Trading, LLC3,064$81.0K0.00%−8,940−74.5%Reduced
RiverPark Advisors, LLC3,170$84.5K0.07%−74−2.3%Reduced
Assetmark, Inc4,412$117.6K0.00%−800−15.3%Reduced
KLP Kapitalforvaltning AS4,800$127.9K0.00%+4,800New
Police & Firemen's Retirement System of New Jersey5,837$155.6K0.00%+5,837New
China Universal Asset Management Co., Ltd.5,939$158.3K0.01%+604+11.3%Added
Proequities, Inc.6,960$185.3K0.01%+6,960New
Russell Investments Group, Ltd.7,212$192.2K0.00%−18,162−71.6%Reduced
Arizona State Retirement System7,599$202.5K0.00%+47+0.6%Added
Oak Harvest Investment Services7,727$205.9K0.03%+7,727New
Voya Investment Management LLC7,876$209.9K0.00%−668−7.8%Reduced
ProShare Advisors LLC8,613$229.5K0.00%+8,613New
First Bank & Trust8,624$229.8K0.04%−540−5.9%Reduced
Royal Bank of Canada8,896$237.0K0.00%−2,355−20.9%Reduced
Verition Fund Management LLC9,048$241.1K0.00%+9,048New
Cambridge Investment Research Advisors, Inc.9,102$243.0K0.00%00.0%Unchanged
Janus Henderson Group PLC9,137$243.2K0.00%00.0%Unchanged
Petrus Trust Company, LTA9,151$243.9K0.02%−3,375−26.9%Reduced
RSM US Wealth Management LLC9,155$244.1K0.00%00.0%Unchanged
Green Alpha Advisors, LLC9,327$248.6K0.20%+9,327New
Manufacturers Life Insurance Company, The9,467$252.3K0.00%−453−4.6%Reduced
Teacher Retirement System of Texas9,475$253.0K0.00%+9,475New
Creative Planning9,540$254.2K0.00%−932−8.9%Reduced
Group One Trading, L.P.9,796$261.1K0.01%+3,481+55.1%Added
Bailard, Inc.9,900$263.8K0.01%+1,100+12.5%Added
Allspring Global Investments Holdings, LLC10,033$267.4K0.00%+23+0.2%Added
Quest Partners LLC10,231$272.7K0.04%+5,913+136.9%Added
Legato Capital Management LLC10,395$277.0K0.04%−15,890−60.5%Reduced
Lido Advisors, LLC10,524$280.5K0.00%00.0%Unchanged
Great West Life Assurance Co10,713$285.0K0.00%−2,506−19.0%Reduced
Fox Run Management, L.L.C.10,716$285.6K0.05%+10,716New
Tower Research Capital LLC (TRC)11,265$300.2K0.01%+7,524+201.1%Added
Jump Financial, LLC11,400$303.8K0.01%−24,736−68.5%Reduced
ExodusPoint Capital Management, LP11,484$306.0K0.00%−32,779−74.1%Reduced
Two Sigma Advisers, LP11,500$306.5K0.00%+11,500New
Intech Investment Management LLC11,578$308.6K0.00%+3,294+39.8%Added
HRT Financial LP12,369$329.0K0.00%−5,492−30.7%Reduced
Sherbrooke Park Advisers LLC12,372$329.7K0.11%−1,789−12.6%Reduced
Cresset Asset Management, LLC12,405$330.6K0.00%−2,325−15.8%Reduced
Corebridge Financial, Inc.12,860$342.7K0.00%−972−7.0%Reduced
Man Group plc13,302$354.5K0.00%+13,302New
Simon Quick Advisors, LLC13,575$361.8K0.02%−28−0.2%Reduced
Counterpoint Mutual Funds LLC13,587$362.1K0.05%+4,688+52.7%Added
Zurcher Kantonalbank (Zurich Cantonalbank)13,642$363.6K0.00%+4,166+44.0%Added
Diversify Wealth Management, LLC12,385$374.6K0.03%−1,013−7.6%Reduced
Stephens Inc14,439$384.8K0.01%−656−4.3%Reduced
Mirae Asset Global ETFs Holdings Ltd.14,786$394.0K0.00%+608+4.3%Added
Alpha DNA Investment Management LLC15,174$404.4K0.22%−1,589−9.5%Reduced
Schonfeld Strategic Advisors LLC15,300$407.7K0.00%−40,700−72.7%Reduced
Wells Fargo & Company15,375$409.7K0.00%+3,460+29.0%Added
MetLife Investment Management16,017$426.9K0.00%+1,645+11.4%Added
Squarepoint Ops LLC17,317$461.5K0.00%−18,142−51.2%Reduced
Susquehanna International Group, LLP17,434$464.6K0.00%+17,434New
Dynamic Technology Lab Private Ltd17,630$470.0K0.08%−26,264−59.8%Reduced