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Castle Biosciences (CSTL) Institutional Ownership

Castle Biosciences logo
$24.11 0.00 (0.00%)
Closing price 07/2/2026 04:00 PM Eastern
Extended Trading
$23.97 -0.14 (-0.56%)
As of 07/2/2026 07:34 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Castle Biosciences (NASDAQ:CSTL)

Current
Institutional Ownership
Percentage
92.60%
Number of
Institutional Buyers
(last 12 months)
115
Total
Institutional Inflows
(last 12 months)
$246.74M
Number of
Institutional Sellers
(last 12 months)
70
Total
Institutional Outflows
(last 12 months)
$148.42M
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CSTL Institutional Buying and Selling by Quarter

Castle Biosciences Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
6/3/2026Parallel Advisors LLC13,301$327K0.0%-4.9%0.044%
5/19/2026Bank of America Corp DE67,810$1.67M0.0%-74.2%0.224%
5/18/2026Empowered Funds LLC132,184$3.25M0.0%+8.4%0.436%
5/16/2026The Manufacturers Life Insurance Company 12,438$305K0.0%+46.6%0.041%
5/16/2026Quantinno Capital Management LP45,476$1.12M0.0%+387.3%0.150%
5/16/2026SummitTX Capital L.P.67,033$1.65M0.1%+285.0%0.221%
5/14/2026Renaissance Technologies LLC532,800$13.08M0.0%+8.1%1.757%
5/14/2026Arrowstreet Capital Limited Partnership27,142$666K0.0%+286.1%0.089%
5/14/2026Sei Investments Co.35,046$860K0.0%-11.8%0.116%
5/14/2026State of Wyoming9,522$234K0.0%+215.9%0.031%
5/8/2026Summit Global Investments13,718$337K0.0%+10.9%0.045%
5/7/2026Dimensional Fund Advisors LP1,039,761$25.52M0.0%-9.1%3.432%
5/7/2026Parallel Advisors LLC13,301$327K0.0%-4.9%0.044%
5/7/2026KBC Group NV36,932$907K0.0%N/A0.122%
5/6/2026Assetmark Inc.5,779$142K0.0%+9.3%0.019%
5/6/2026Allspring Global Investments Holdings LLC160,663$3.94M0.0%+0.9%0.530%
5/5/2026Bank of New York Mellon Corp88,654$2.18M0.0%+1.9%0.293%
5/4/2026Principal Financial Group Inc.1,769,877$43.45M0.0%-2.1%5.841%
5/2/2026Diversify Wealth Management LLC15,760$382K0.0%+36.0%0.052%
5/1/2026Kornitzer Capital Management Inc. KS264,396$6.49M0.1%-1.2%0.873%
4/30/2026AIGH Capital Management LLC590,601$14.50M2.0%-5.5%1.949%
4/27/2026Y Intercept Hong Kong Ltd23,501$577K0.0%+77.4%0.078%
4/25/2026Strs Ohio25,000$614K0.0%+98.4%0.083%
4/24/2026Perkins Capital Management Inc.15,415$378K0.4%-45.0%0.051%
4/23/2026Inspire Investing LLC21,045$517K0.0%+75.2%0.069%
4/21/2026Wasatch Advisors LP455,036$11.17M0.1%-15.3%1.502%
4/16/2026SG Americas Securities LLC244,886$6.01M0.0%+1,051.8%0.808%
3/20/2026Hsbc Holdings PLC19,486$760K0.0%-41.4%0.066%
3/3/2026Caitong International Asset Management Co. Ltd2,099$82K0.0%+188.3%0.007%
2/19/2026Invesco Ltd.135,461$5.27M0.0%+142.6%0.464%
2/18/2026Mackenzie Financial Corp37,317$1.46M0.0%+54.2%0.128%
2/18/2026Empowered Funds LLC121,920$4.74M0.0%+24.2%0.418%
2/18/2026XTX Topco Ltd22,125$861K0.0%N/A0.076%
2/18/2026Verdad Advisers LP7,085$276K0.1%N/A0.024%
2/18/2026Wellington Management Group LLP218,560$8.50M0.0%N/A0.749%
2/18/2026SummitTX Capital L.P.17,410$677K0.0%-61.3%0.060%
2/18/2026Tudor Investment Corp ET AL167,178$6.50M0.0%+95.7%0.573%
2/18/2026RTW Investments LP2,115,237$82.28M0.8%N/A7.246%
2/18/2026Palisade Capital Management LP567,777$22.09M0.7%-11.1%1.945%
2/18/2026Millennium Management LLC308,914$12.02M0.0%-46.3%1.058%
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2/18/2026Man Group plc11,585$451K0.0%N/A0.040%
2/18/2026Inspire Investing LLC12,011$467K0.0%-39.6%0.041%
2/18/2026Janus Henderson Group PLC15,037$585K0.0%+64.6%0.052%
2/18/2026Engineers Gate Manager LP22,949$893K0.0%-50.7%0.079%
2/18/2026Bridgeway Capital Management LLC246,920$9.61M0.2%+39.4%0.846%
2/17/2026Schonfeld Strategic Advisors LLC21,476$835K0.0%-75.5%0.074%
2/17/2026AQR Capital Management LLC63,881$2.49M0.0%+25.6%0.219%
2/17/2026Braidwell LP177,183$6.89M0.2%-78.5%0.607%
2/17/2026Cetera Investment Advisers8,935$348K0.0%N/A0.031%
2/17/2026Trexquant Investment LP64,605$2.51M0.0%-63.8%0.221%
2/17/2026Jump Financial LLC5,500$214K0.0%N/A0.019%
2/17/2026Price T Rowe Associates Inc. MD34,138$1.33M0.0%+4.7%0.117%
2/17/2026Osaic Holdings Inc.36,404$1.42M0.0%+8,822.5%0.125%
2/17/2026California State Teachers Retirement System27,725$1.08M0.0%+12.6%0.095%
2/17/2026Kemnay Advisory Services Inc.889$35K0.0%N/A0.003%
2/17/2026Summit Partners Public Asset Management LLC1,058,725$41.18M0.9%+164.7%3.627%
2/17/2026Graham Capital Management L.P.10,928$425K0.0%-48.3%0.037%
2/17/2026Persistent Asset Partners Ltd2,463$96K0.0%N/A0.008%
2/16/2026Squarepoint Ops LLC55,118$2.14M0.0%N/A0.189%
2/16/2026TritonPoint Partners LLC10,777$419K0.2%N/A0.037%
2/16/2026Verition Fund Management LLC16,811$654K0.0%+7.5%0.058%
2/16/2026Panagora Asset Management Inc.45,995$1.79M0.0%+114.9%0.158%
2/16/2026Eventide Asset Management LLC305,000$11.86M0.2%N/A1.045%
2/16/2026Barclays PLC72,149$2.81M0.0%-1.3%0.247%
2/13/2026The Manufacturers Life Insurance Company 8,487$330K0.0%-11.0%0.029%
2/13/2026CANADA LIFE ASSURANCE Co3,244$126K0.0%-69.7%0.011%
2/13/2026Schroder Investment Management Group492,161$19.35M0.0%-0.6%1.686%
2/13/2026Birchview Capital LP80,600$3.14M1.8%-27.1%0.276%
2/13/2026Charles Schwab Investment Management Inc.242,535$9.44M0.0%+1.8%0.831%
2/13/2026State Street Corp736,454$28.65M0.0%+1.7%2.523%
2/13/2026Caitong International Asset Management Co. Ltd1,750$68K0.2%+140.4%0.006%
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC69,628$2.71M0.0%+21.2%0.239%
2/13/2026Wells Fargo & Company MN34,212$1.33M0.0%+42.7%0.117%
2/12/2026Wasatch Advisors LP537,241$20.90M0.1%-19.7%1.841%
2/12/2026HRT Financial LP47,654$1.85M0.0%+0.9%0.163%
2/12/2026Orion Porfolio Solutions LLC74,653$2.90M0.0%-2.2%0.256%
2/12/2026Commonwealth Equity Services LLC6,591$256K0.0%N/A0.023%
2/12/2026State Board of Administration of Florida Retirement System7,154$278K0.0%N/A0.025%
2/12/2026Renaissance Technologies LLC493,100$19.18M0.0%-12.4%1.689%
2/12/2026Dimensional Fund Advisors LP1,143,799$44.50M0.0%-22.4%3.919%
2/12/2026Counterpoint Mutual Funds LLC12,952$504K0.0%N/A0.044%
2/12/2026Federated Hermes Inc.660$26K0.0%N/A0.002%
2/12/2026Informed Momentum Co LLC74,138$2.88M0.3%N/A0.254%
2/12/2026New York State Common Retirement Fund233,046$9.07M0.0%+1.3%0.798%
2/12/2026Swiss National Bank57,300$2.23M0.0%+2.3%0.196%
2/12/2026Nuveen LLC524,681$20.41M0.0%-45.2%1.798%
2/11/2026Empowered Funds LLC121,920$4.74M0.0%+24.2%0.418%
2/11/2026Deutsche Bank AG22,384$871K0.0%+34.5%0.077%
2/11/2026Fox Run Management L.L.C.21,884$851K0.1%+58.4%0.075%
2/11/2026LPL Financial LLC10,877$423K0.0%+15.7%0.037%
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2/11/2026Franklin Resources Inc.80,603$3.14M0.0%-19.2%0.276%
2/11/2026JPMorgan Chase & Co.90,032$3.50M0.0%+224.1%0.308%
2/11/2026Los Angeles Capital Management LLC23,631$919K0.0%-2.0%0.081%
2/11/2026Parallel Advisors LLC13,986$544K0.0%-21.4%0.048%
2/11/2026Globeflex Capital L P3,759$146K0.0%N/A0.013%
2/11/2026State of Wyoming3,014$117K0.0%N/A0.010%
2/10/2026Goldman Sachs Group Inc.287,235$11.17M0.0%-16.8%0.984%
2/10/2026BNP Paribas Financial Markets150,011$5.84M0.0%+7.2%0.514%
2/10/2026Intech Investment Management LLC11,718$456K0.0%-5.4%0.040%
2/9/2026Geode Capital Management LLC714,913$27.82M0.0%+2.3%2.449%


CSTL Institutional Ownership - Frequently Asked Questions

During the previous two years, 196 institutional investors and hedge funds held shares of Castle Biosciences. The most heavily invested institutionals were Vanguard Group Inc. ($85.57M), RTW Investments LP ($82.28M), Principal Financial Group Inc. ($43.45M), Summit Partners Public Asset Management LLC ($41.18M), Portolan Capital Management LLC ($34.50M), State Street Corp ($28.65M), and Geode Capital Management LLC ($27.82M).Learn more on Castle Biosciences' institutional investors.

92.60% of Castle Biosciences' stock is owned by institutional investors. Learn more on CSTL's institutional investor holdings.

Of the 167 institutional investors that purchased Castle Biosciences' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: RTW Investments LP ($2.12M), Wellington Management Group LLP ($1.77M), Summit Partners Public Asset Management LLC ($1.06M), Braidwell LP ($822.74K), AIGH Capital Management LLC ($707.29K), Nuveen LLC ($671.81K), and Park West Asset Management LLC ($556.49K).

Institutional investors have bought a total of 7,985,406 shares in the last 24 months. This purchase volume represents approximately $246.74M in transactions.

Of the 70 institutional investors that sold Castle Biosciences' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Braidwell LP ($645.55K), Wasatch Advisors LP ($594.74K), Dimensional Fund Advisors LP ($434.33K), Nuveen LLC ($432.40K), Millennium Management LLC ($266.18K), Bank of America Corp DE ($262.58K), and UBS Group AG ($221.98K).

Institutional investors have sold a total of 4,683,450 shares in the last 24 months. This volume of shares sold represents approximately $148.42M in transactions.


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This page (NASDAQ:CSTL) was last updated on 7/5/2026 by MarketBeat.com Staff.
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