Castle Biosciences (CSTL) Institutional Ownership $24.01 +0.55 (+2.34%) Closing price 08/29/2025 04:00 PM EasternExtended Trading$24.01 0.00 (0.00%) As of 08/29/2025 05:18 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 Polygon.io. Learn more. Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Castle Biosciences (NASDAQ:CSTL)CurrentInstitutional OwnershipPercentage92.60%Number ofInstitutional Buyers(last 12 months)123TotalInstitutional Inflows(last 12 months)$228.68MNumber ofInstitutional Sellers(last 12 months)75TotalInstitutional Outflows(last 12 months)$133.98M Get CSTL Insider Trade Alerts Want to know when executives and insiders are buying or selling Castle Biosciences stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. 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Skip Chart & View Institutional Buying and Selling Data CSTL Institutional Buying and Selling by Quarter Castle Biosciences Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/27/2025 Orion Porfolio Solutions LLC76,532$1.56M0.0%-2.4%0.264% 8/27/2025 Squarepoint Ops LLC125,719$2.57M0.0%+29.1%0.433% 8/15/2025 Tower Research Capital LLC TRC 2,791$57K0.0%+256.9%0.010% 8/15/2025 Wasatch Advisors LP1,049,773$21.44M0.1%+5.1%3.619% 8/15/2025 Orion Porfolio Solutions LLC76,532$1.56M0.0%-2.4%0.264% 8/15/2025 Palisade Capital Management LP575,116$11.74M0.3%+17.4%1.982% 8/15/2025 Engineers Gate Manager LP67,252$1.37M0.0%+27.1%0.232% 8/15/2025 BNP Paribas Financial Markets99,293$2.03M0.0%+119.5%0.342% 8/15/2025 Braidwell LP822,735$16.80M0.6%+125.3%2.836% 8/15/2025 Bridgeway Capital Management LLC40,750$832K0.0%N/A0.140% Get the Latest News and Ratings for CSTL and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Castle Biosciences and its competitors with MarketBeat's FREE daily newsletter. 8/15/2025 Brevan Howard Capital Management LP41,301$843K0.0%+238.4%0.142% 8/15/2025 Birchview Capital LP110,600$2.26M2.2%+25.1%0.381% 8/15/2025 Bank of America Corp DE382,745$7.82M0.0%+2.0%1.319% 8/15/2025 Ameriprise Financial Inc.372,467$7.61M0.0%+14.4%1.284% 8/14/2025 Diversify Wealth Management LLC12,322$238K0.0%-6.0%0.042% 8/14/2025 The Manufacturers Life Insurance Company 10,316$211K0.0%N/A0.036% 8/14/2025 Squarepoint Ops LLC125,719$2.57M0.0%+29.1%0.433% 8/14/2025 Sei Investments Co.31,130$636K0.0%-25.0%0.107% 8/14/2025 Nebula Research & Development LLC44,472$908K0.1%+18.2%0.153% 8/14/2025 Qube Research & Technologies Ltd192,553$3.93M0.0%-31.1%0.664% 8/13/2025 Jump Financial LLC21,858$446K0.0%N/A0.075% 8/13/2025 Invesco Ltd.40,429$826K0.0%+25.4%0.139% 8/13/2025 New York State Common Retirement Fund215,830$4.41M0.0%+32.3%0.744% 8/13/2025 Schroder Investment Management Group648,572$13.20M0.0%+8.6%2.236% 8/13/2025 Hsbc Holdings PLC34,018$691K0.0%+73.3%0.117% 8/13/2025 Advantage Alpha Capital Partners LP16,021$327K0.1%-19.1%0.055% 8/13/2025 Elevation Point Wealth Partners LLC8,362$171K0.0%N/A0.029% 8/13/2025 Russell Investments Group Ltd.1,532$31K0.0%-91.8%0.005% 8/12/2025 XTX Topco Ltd46,301$945K0.0%+135.9%0.160% 8/12/2025 Summit Global Investments15,649$320K0.0%-48.9%0.054% 8/12/2025 American Century Companies Inc.65,272$1.33M0.0%-11.9%0.225% 8/12/2025 Rhumbline Advisers45,397$927K0.0%+15.9%0.156% 8/12/2025 Legal & General Group Plc34,908$713K0.0%+34.7%0.120% 8/12/2025 JPMorgan Chase & Co.26,663$544K0.0%-12.8%0.092% 8/11/2025 Universal Beteiligungs und Servicegesellschaft mbH54,610$1.12M0.0%+364.6%0.188% 8/8/2025 Intech Investment Management LLC12,289$251K0.0%-23.6%0.042% 8/8/2025 Advisors Capital Management LLC245,867$5.02M0.1%+21.9%0.848% 8/8/2025 Geode Capital Management LLC689,926$14.09M0.0%+6.2%2.378% 8/7/2025 Acadian Asset Management LLC544,250$11.11M0.0%-19.5%1.876% 8/7/2025 Connor Clark & Lunn Investment Management Ltd.126,431$2.58M0.0%-28.5%0.436% Why Trump’s “Smart Dollar” could rewrite the rules (Ad)MUST SEE: Donald Trump's Radical Overhaul of the U.S. Dollar Congress just approved President Trump's latest plans for the dollar – and they're so bold that one central bank chair says we haven't seen anything like it in almost a century. Our Wall Street insider says it's the start of a once-in-a-lifetime investing opportunity, IF you act now.Get the three steps to take this month to put yourself on the right side of this $30 trillion money8/1/2025 Y Intercept Hong Kong Ltd78,938$1.61M0.0%N/A0.273% 8/1/2025 Envestnet Asset Management Inc.70,478$1.44M0.0%+1.0%0.244% 7/31/2025 AlphaQuest LLC2,095$43K0.0%-65.1%0.007% 7/29/2025 Stephens Inc. AR11,386$233K0.0%-16.5%0.039% 7/28/2025 Allianz Asset Management GmbH713,742$14.58M0.0%+11.6%2.472% 7/25/2025 Allspring Global Investments Holdings LLC161,175$3.29M0.0%-26.0%0.558% 7/24/2025 Inspire Investing LLC19,117$390K0.0%+11.4%0.066% 7/18/2025 Truist Financial Corp24,023$491K0.0%+7.7%0.083% 7/17/2025 Tritonpoint Wealth LLC40,777$833K0.1%-2.1%0.141% 7/9/2025 Harbor Capital Advisors Inc.20,399$417K0.0%+22.9%0.071% 7/9/2025 First Bank & Trust19,951$407K0.1%+31.8%0.069% 6/27/2025 Goldman Sachs Group Inc.175,325$3.51M0.0%-59.5%0.607% 6/3/2025 Inspire Investing LLC17,153$343K0.0%-62.5%0.059% 5/29/2025 Rhumbline Advisers39,186$784K0.0%-1.8%0.136% 5/28/2025 Strs Ohio18,300$366K0.0%N/A0.063% 5/27/2025 Advisors Capital Management LLC201,687$4.04M0.1%+12.7%0.699% 5/21/2025 Acadian Asset Management LLC676,066$13.53M0.0%+65.4%2.342% 5/19/2025 Jane Street Group LLC30,676$614K0.0%-48.3%0.106% 5/16/2025 Caxton Associates LLP16,440$329K0.0%N/A0.057% 5/16/2025 Goldman Sachs Group Inc.175,325$3.51M0.0%-59.5%0.607% 5/16/2025 Jones Financial Companies Lllp2,673$54K0.0%+10,592.0%0.009% 5/16/2025 Dynamic Technology Lab Private Ltd21,235$425K0.1%+20.4%0.074% 5/16/2025 Park West Asset Management LLC556,485$11.14M0.9%N/A1.927% 5/16/2025 Parkman Healthcare Partners LLC350,551$7.02M0.8%+15.1%1.214% 5/16/2025 Millennium Management LLC254,749$5.10M0.0%-53.6%0.882% 5/16/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.15,441$309K0.0%+4.4%0.053% 5/16/2025 Jacobs Levy Equity Management Inc.21,299$426K0.0%-84.2%0.074% 5/16/2025 AQR Capital Management LLC137,022$2.74M0.0%+548.9%0.475% 5/16/2025 Amundi4,137$79K0.0%+15,811.5%0.014% 5/15/2025 Birchview Capital LP88,404$1.77M1.5%+13.3%0.306% 5/15/2025 Braidwell LP365,247$7.31M0.3%N/A1.265% 5/15/2025 Cubist Systematic Strategies LLC237,698$4.76M0.0%+33.9%0.823% 5/15/2025 Graham Capital Management L.P.68,385$1.37M0.0%+64.1%0.237% 5/15/2025 Magnetar Financial LLC11,226$225K0.0%N/A0.039% 5/15/2025 Trexquant Investment LP248,991$4.99M0.1%+22.3%0.862% 5/14/2025 Oak Harvest Investment Services16,883$338K0.0%+118.5%0.058% 5/14/2025 AlphaQuest LLC6,008$120K0.0%-41.3%0.021% 5/14/2025 Advantage Alpha Capital Partners LP19,805$396K0.1%N/A0.069% 5/14/2025 EntryPoint Capital LLC20,432$409K0.2%-29.9%0.071% 5/14/2025 Quantbot Technologies LP15,287$306K0.0%N/A0.053% 5/14/2025 Wellington Management Group LLP828,528$16.59M0.0%+14.7%2.870% 5/13/2025 Algert Global LLC144,311$2.89M0.1%-3.5%0.500% 5/13/2025 American Century Companies Inc.74,067$1.48M0.0%+7.1%0.257% 5/13/2025 Russell Investments Group Ltd.18,669$373K0.0%+158.9%0.065% 5/12/2025 Nuveen LLC671,811$13.45M0.0%N/A2.327% 5/12/2025 Invesco Ltd.32,251$646K0.0%+17.1%0.112% 5/12/2025 Connor Clark & Lunn Investment Management Ltd.176,889$3.54M0.0%+4.8%0.613% 5/12/2025 Townsquare Capital LLC23,772$476K0.0%+7.1%0.082% 5/12/2025 Swiss National Bank54,300$1.09M0.0%+5.8%0.188% 5/9/2025 Deutsche Bank AG65,537$1.31M0.0%-3.1%0.227% Retire Comfortably with These New Monthly Income ETFs? 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This strategy was once reserved for the ultra-wealthy, but it’s now available to everyday investors.Click here to watch the free presentation and learn how to calculate your personal Freedom Number—an5/9/2025 Charles Schwab Investment Management Inc.242,258$4.85M0.0%-6.4%0.839% 5/9/2025 Vanguard Group Inc.2,047,565$40.99M0.0%+11.7%7.092% 5/8/2025 Harbour Investments Inc.2,500$50K0.0%N/A0.009% 5/8/2025 XTX Topco Ltd19,628$393K0.0%N/A0.068% 5/8/2025 GSA Capital Partners LLP67,143$1.34M0.1%-5.2%0.233% 5/7/2025 Mackenzie Financial Corp27,460$550K0.0%+30.6%0.095% 5/7/2025 Zurcher Kantonalbank Zurich Cantonalbank12,081$242K0.0%-11.4%0.042% 5/6/2025 Universal Beteiligungs und Servicegesellschaft mbH11,753$235K0.0%N/A0.041% 5/5/2025 Allianz Asset Management GmbH639,477$12.80M0.0%+98.4%2.217% 5/5/2025 Hussman Strategic Advisors Inc.21,000$420K0.1%-71.4%0.073% (Data available from 1/1/2016 forward) CSTL Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of CSTL shares? During the previous two years, 180 institutional investors and hedge funds held shares of Castle Biosciences. The most heavily invested institutionals were Vanguard Group Inc. ($40.99M), Principal Financial Group Inc. ($29.39M), Dimensional Fund Advisors LP ($26.64M), Wasatch Advisors LP ($21.44M), Portolan Capital Management LLC ($20.70M), Bellevue Group AG ($19.88M), and State Street Corp ($19.39M).Learn more on Castle Biosciences' institutional investors. What percentage of Castle Biosciences' stock is owned by institutional investors? 92.60% of Castle Biosciences' stock is owned by institutional investors. Learn more on CSTL's institutional investor holdings. Which institutional investors have been buying Castle Biosciences' stock? Of the 154 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: Wellington Management Group LLP ($1.55M), Deerfield Management Company L.P. Series C ($946.62K), Braidwell LP ($822.74K), Nuveen LLC ($671.81K), Park West Asset Management LLC ($556.49K), Point72 Asset Management L.P. ($547.10K), and Acadian Asset Management LLC ($456.53K). How much institutional buying is happening at Castle Biosciences? Institutional investors have bought a total of 9,644,717 shares in the last 24 months. This purchase volume represents approximately $228.68M in transactions. Which of Castle Biosciences' major shareholders have been selling company stock? Of the 75 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: Wasatch Advisors LP ($531.85K), Bellevue Group AG ($516.05K), Goldman Sachs Group Inc. ($514.85K), Jacobs Levy Equity Management Inc. ($496.68K), Portolan Capital Management LLC ($479.05K), Soleus Capital Management L.P. ($409.42K), and Granahan Investment Management LLC ($314.40K). How much institutional selling is happening at Castle Biosciences? Institutional investors have sold a total of 5,395,558 shares in the last 24 months. This volume of shares sold represents approximately $133.98M in transactions. 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