Quest Diagnostics (DGX) Stock Chart & Stock Price History $180.71 -2.20 (-1.20%) Closing price 03:59 PM EasternExtended Trading$180.48 -0.23 (-0.13%) As of 06:39 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 17.07%, with a year-to-date return of 19.79%. In the past month, the stock has increased 0.58%, reflecting recent market activity. As of the latest close, Quest Diagnostics traded at $182.86 with a market cap of $20.45 billion and volume of 454,078 shares. Five years ago, the stock traded at $113.59, representing a 59.09% increase over that period. At the time, it had a market cap of $15.26 billion and a volume of 1.11 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. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. 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Read our full terms of service and privacy policy. 5 Day Performance+0.22%1 Month Performance+0.58%3 Month Performance+0.37%Year-To-Date Performance+19.79%1 Year Performance+17.07%5 Year Performance+59.09% DGX Stock Chart for Monday, September, 15, 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 Capitalization09/15/2025$182.86$180.71-1.18%$183.27$180.58642,154 shs$20.21 billion09/12/2025$183.66$182.86-0.44%$185.05$182.51454,078 shs$20.45 billion09/11/2025$180.31$183.66+1.86%$184.14$180.00598,547 shs$20.54 billion09/10/2025$182.69$180.31-1.30%$182.11$179.77652,122 shs$20.16 billion09/09/2025$182.53$182.69+0.09%$183.38$181.17435,480 shs$20.43 billion09/08/2025$183.44$182.53-0.50%$183.50$180.91438,453 shs$20.41 billion09/05/2025$180.17$183.44+1.81%$183.78$180.20556,218 shs$20.51 billion09/04/2025$179.31$180.17+0.48%$180.84$179.38585,707 shs$20.15 billion09/03/2025$178.35$179.31+0.54%$179.62$177.04689,498 shs$20.05 billion09/02/2025$181.81$178.35-1.91%$182.01$178.311.11 million 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. 09/01/2025$181.81$181.81$182.35$179.06731,481 shs$20.33 billion08/29/2025$179.16$181.81+1.48%$182.35$179.06731,481 shs$20.33 billion08/28/2025$179.68$179.16-0.29%$179.71$178.13559,951 shs$20.03 billion08/27/2025$180.18$179.68-0.28%$180.89$179.45597,069 shs$20.09 billion08/26/2025$178.74$180.18+0.81%$180.37$178.391.04 million shs$20.15 billion08/25/2025$180.10$178.74-0.76%$179.19$176.97753,356 shs$19.99 billion08/22/2025$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 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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