Quest Diagnostics (DGX) Stock Chart & Stock Price History $180.10 -3.62 (-1.97%) Closing price 08/22/2025 03:59 PM EasternExtended Trading$180.26 +0.16 (+0.09%) As of 08/22/2025 06:48 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 ForecastsChartCompetitorsDividendEarningsFDA EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Quest Diagnostics Stock Price Performance The Quest Diagnostics (DGX) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 17.28%, with a year-to-date return of 19.38%. In the past month, the stock has increased 4.82%, reflecting recent market activity. As of the latest close, Quest Diagnostics traded at $180.10 with a market cap of $20.14 billion and volume of 947,753 shares. Five years ago, the stock traded at $117.60, representing a 53.15% increase over that period. At the time, it had a market cap of $15.82 billion and a volume of 1.16 million shares. Receive DGX Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Quest Diagnostics and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance-1.47%1 Month Performance+4.82%3 Month Performance+5.11%Year-To-Date Performance+19.38%1 Year Performance+17.28%5 Year Performance+53.15% DGX Stock Chart for Sunday, August, 24, 2025 DGX Chart by TradingView Quest Diagnostics 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 Capitalization08/22/2025$183.60$180.10-1.91%$185.62$179.93947,753 shs$20.14 billion08/21/2025$184.23$183.60-0.34%$185.26$182.841.07 million shs$20.53 billion08/20/2025$182.78$184.23+0.80%$184.97$182.44957,844 shs$20.60 billion08/19/2025$179.19$182.78+2.00%$183.37$179.05784,666 shs$20.01 billion08/18/2025$179.67$179.19-0.27%$180.44$178.84808,449 shs$20.04 billion08/15/2025$178.44$179.67+0.69%$180.37$177.27810,247 shs$20.09 billion08/14/2025$178.98$178.44-0.30%$178.84$177.29679,522 shs$19.95 billion08/13/2025$178.62$178.98+0.20%$179.47$177.59928,470 shs$20.01 billion08/12/2025$178.29$178.62+0.19%$178.87$175.56763,235 shs$19.97 billion08/11/2025$177.09$178.29+0.68%$178.55$177.04653,178 shs$19.94 billion Get the Latest News and Ratings for DGX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Quest Diagnostics and its competitors with MarketBeat's FREE daily newsletter. 08/08/2025$174.28$177.09+1.61%$177.25$174.58616,268 shs$19.80 billion08/07/2025$173.01$174.28+0.73%$174.47$172.70898,400 shs$19.49 billion08/06/2025$173.34$173.01-0.19%$175.48$171.79994,277 shs$19.35 billion08/05/2025$172.60$173.34+0.43%$174.58$171.91744,236 shs$19.38 billion08/04/2025$170.81$172.60+1.05%$172.73$170.53788,367 shs$19.30 billion08/01/2025$167.29$170.81+2.10%$171.91$167.961.42 million shs$19.10 billion07/31/2025$168.80$167.29-0.89%$170.14$166.76941,435 shs$18.71 billion07/30/2025$167.86$168.80+0.56%$169.75$166.751.09 million shs$18.88 billion07/29/2025$167.84$167.86+0.01%$169.62$167.03810,658 shs$18.77 billion07/28/2025$168.38$167.84-0.32%$168.76$165.781.09 million shs$18.77 billion07/25/2025$171.82$168.38-2.00%$173.04$167.161.88 million shs$18.80 billion07/24/2025$170.28$171.82+0.90%$175.76$170.472.11 million shs$19.18 billion07/23/2025$178.13$170.28-4.41%$180.89$168.323.09 million shs$19.01 billion Related Companies Henry Schein Stock Price Chart Medpace Stock Price Chart AMN Healthcare Services Stock Price Chart Labcorp Stock Price Chart DaVita Stock Price Chart Chemed Stock Price Chart CorVel Stock Price Chart Amedisys Stock Price Chart Pediatrix Medical Group Stock Price Chart Cross Country Healthcare Stock Price Chart Receive DGX Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Quest Diagnostics and its competitors with MarketBeat's FREE daily newsletter. 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