Castle Biosciences (CSTL) Stock Chart & Stock Price History $20.34 0.00 (0.00%) As of 11:18 AM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Castle Biosciences Stock Price Performance The Castle Biosciences (CSTL) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 4.33%, with a year-to-date return of -23.68%. In the past month, the stock has increased 25.02%, reflecting recent market activity. As of the latest close, Castle Biosciences traded at $20.34 with a market cap of $587.22 million and volume of 353,247 shares. Five years ago, the stock traded at $39.12, representing a 48.01% decrease over that period. At the time, it had a market cap of $649.02 million and a volume of 221,500 shares. 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Email Address 5 Day Performance-0.05%1 Month Performance+25.02%3 Month Performance+0.74%Year-To-Date Performance-23.68%1 Year Performance-4.33%5 Year Performance-48.01% CSTL Stock Chart for Wednesday, July, 2, 2025 CSTL Chart by TradingView Castle Biosciences Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization07/01/2025$20.42$20.34-0.39%$20.58$20.01353,247 shs$587.22 million06/30/2025$20.35$20.42+0.34%$20.63$20.21527,611 shs$589.53 million06/27/2025$19.75$20.35+3.04%$20.55$19.661.39 million shs$587.50 million06/26/2025$19.47$19.75+1.44%$19.92$19.35434,066 shs$570.18 million06/25/2025$19.16$19.47+1.62%$19.58$18.81430,423 shs$562.10 million06/24/2025$18.85$19.16+1.64%$19.30$18.75309,909 shs$553.15 million06/23/2025$18.52$18.85+1.78%$18.92$18.18255,462 shs$544.24 million06/20/2025$18.91$18.52-2.06%$19.17$18.43312,825 shs$534.67 million06/19/2025$18.91$18.91$19.06$17.89335,521 shs$545.93 million06/18/2025$18.54$18.91+2.00%$19.06$17.89335,521 shs$545.97 million 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. 06/17/2025$19.27$18.54-3.79%$19.36$18.08581,561 shs$535.29 million06/16/2025$18.75$19.27+2.77%$19.38$18.31369,628 shs$556.36 million06/13/2025$18.82$18.75-0.37%$18.99$17.96516,140 shs$541.35 million06/12/2025$18.44$18.82+2.06%$18.83$18.17573,266 shs$543.37 million06/11/2025$18.04$18.44+2.22%$18.67$17.99424,093 shs$532.40 million06/10/2025$18.17$18.04-0.72%$18.46$17.95323,802 shs$520.85 million06/09/2025$17.60$18.17+3.24%$18.46$17.43469,448 shs$524.60 million06/06/2025$17.02$17.60+3.41%$17.67$17.23560,182 shs$508.15 million06/05/2025$17.02$17.02$17.19$16.61343,692 shs$491.40 million06/04/2025$16.71$17.02+1.86%$17.06$16.59279,926 shs$491.40 million06/03/2025$16.27$16.71+2.70%$16.91$15.94391,255 shs$482.45 million06/02/2025$15.97$16.27+1.88%$16.42$15.57487,737 shs$469.75 million Related Companies Addus HomeCare Stock Price Chart Veracyte Stock Price Chart PACS Group Stock Price Chart GeneDx Stock Price Chart LifeStance Health Group Stock Price Chart Ardent Health Stock Price Chart Progyny Stock Price Chart National HealthCare Stock Price Chart GRAIL Stock Price Chart Teladoc Health Stock Price Chart Receive CSTL Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Castle Biosciences and its competitors with MarketBeat's FREE daily newsletter. 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