Castle Biosciences (CSTL) Stock Chart & Stock Price History $16.02 -0.48 (-2.91%) Closing price 05/21/2025 04:00 PM EasternExtended Trading$16.00 -0.03 (-0.16%) As of 05/21/2025 05:07 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 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 34.56%, with a year-to-date return of -39.89%. In the past month, the stock has decreased 27.12%, reflecting recent market activity. As of the latest close, Castle Biosciences traded at $16.02 with a market cap of $462.53 million and volume of 318,503 shares. Five years ago, the stock traded at $37.31, representing a 57.06% decrease over that period. At the time, it had a market cap of $644.72 million and a volume of 109,600 shares. 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. Email Address 5 Day Performance-4.36%1 Month Performance-27.12%3 Month Performance-37.79%Year-To-Date Performance-39.89%1 Year Performance-34.56%5 Year Performance-57.06% CSTL Stock Chart for Thursday, May, 22, 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 Capitalization05/21/2025$16.50$16.02-2.91%$16.48$15.89318,503 shs$462.53 million05/20/2025$16.40$16.50+0.61%$16.56$16.22244,623 shs$476.39 million05/19/2025$16.75$16.40-2.09%$16.66$16.30334,055 shs$473.50 million05/16/2025$16.48$16.75+1.64%$16.93$16.42393,888 shs$483.61 million05/15/2025$16.32$16.48+0.98%$16.79$15.84409,214 shs$475.81 million05/14/2025$17.03$16.32-4.17%$17.09$16.31439,544 shs$471.19 million05/13/2025$17.04$17.03-0.06%$17.32$16.55498,873 shs$491.69 million05/12/2025$16.79$17.04+1.49%$17.49$16.77370,825 shs$491.98 million05/09/2025$17.21$16.79-2.44%$17.34$16.67380,690 shs$484.76 million05/08/2025$17.05$17.21+0.94%$17.70$16.64583,072 shs$496.42 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. 05/07/2025$16.62$17.05+2.59%$17.21$16.55792,696 shs$491.81 million05/06/2025$18.75$16.62-11.36%$18.00$15.701.56 million shs$479.40 million05/05/2025$19.35$18.75-3.10%$19.67$18.69535,309 shs$540.84 million05/02/2025$19.31$19.35+0.21%$19.80$19.051.25 million shs$558.15 million05/01/2025$20.05$19.31-3.69%$20.27$19.28471,140 shs$557.00 million04/30/2025$19.85$20.05+1.01%$20.12$19.35394,176 shs$578.34 million04/29/2025$20.09$19.85-1.19%$20.32$19.63322,452 shs$572.57 million04/28/2025$20.63$20.09-2.62%$20.82$19.62489,240 shs$579.50 million04/25/2025$20.93$20.63-1.43%$20.86$20.33298,200 shs$595.07 million04/24/2025$21.27$20.93-1.60%$21.87$20.26567,317 shs$603.73 million04/23/2025$21.98$21.27-3.23%$22.82$21.21468,264 shs$613.53 million04/22/2025$21.14$21.98+3.97%$22.09$21.05350,108 shs$634.01 million04/21/2025$21.51$21.14-1.72%$21.79$21.12635,223 shs$609.78 million Related Companies Progyny Stock Price Chart PACS Group Stock Price Chart GeneDx Stock Price Chart National HealthCare Stock Price Chart Teladoc Health Stock Price Chart Grail Stock Price Chart AdaptHealth Stock Price Chart agilon health Stock Price Chart Aveanna Healthcare Stock Price Chart Viridian Therapeutics 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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