Quest Diagnostics - 15 Year Stock Price History | DGX

Historical daily share price chart and data for Quest Diagnostics since 2011 adjusted for splits and dividends. The latest closing stock price for Quest Diagnostics as of June 09, 2026 is 204.53.
  • The all-time high Quest Diagnostics stock closing price was 210.99 on February 27, 2026.
  • The Quest Diagnostics 52-week high stock price is 213.50, which is 4.4% above the current share price.
  • The Quest Diagnostics 52-week low stock price is 164.65, which is 19.5% below the current share price.
  • The average Quest Diagnostics stock price for the last 52 weeks is 186.08.
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Quest Diagnostics Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2026 193.7621 172.2520 210.9940 171.9550 204.5300 18.92%
2025 171.8368 146.8480 190.6480 146.8480 171.9940 17.20%
2024 138.1095 134.1000 159.4260 118.4950 146.7510 11.77%
2023 128.7464 145.3460 145.3460 114.4730 131.3000 -10.05%
2022 127.2612 149.6720 149.6720 113.0100 145.9710 -7.35%
2021 125.1890 108.3040 157.5580 102.9640 157.5580 47.86%
2020 99.8260 92.4567 115.6820 64.4526 106.5600 14.11%
2019 84.6605 70.2735 94.4329 68.9992 93.3836 31.13%
2018 87.0302 82.9995 97.8790 68.2038 71.2142 -13.84%
2017 83.7868 76.1759 92.4630 74.9661 82.6554 9.16%
2016 64.1932 57.1014 76.2995 49.1281 75.7227 31.90%
2015 56.4894 54.4839 63.5009 48.5286 57.4080 8.37%
2014 46.4669 40.8364 53.7966 39.4764 52.9750 28.05%
2013 45.3216 44.4163 49.2200 40.7900 41.3695 -6.24%
2012 44.5055 43.2648 48.9746 41.1265 44.1210 1.50%
Sector Industry Market Cap Revenue
Medical Medical - Outpatient & Home Care $21.197B $11.035B
Quest Diagnostics, Inc. is the provider of commercial laboratory services. Quest provides lab testing services to physicians, hospitals, managed care organizations, employers, government institutions and other clinical laboratories. The company consists of 2 business groups - Diagnostic Information Services and Diagnostic Solutions. The company's focus is on two elements - to accelerate growth and to drive operational excellence. Restore Growth: The company has adopted seven tactical approaches to accelerate growth such as sales and marketing; development of esoteric testing through a disease focus; partnerships with hospitals and successful testing of international IDNs; creation of value from information assets; leadership in companion diagnostics; extension into adjacent markets. Drive Operational excellence: The company plans to focus on four strategic requirements - to enhance end-to-end customer value chain, enterprise information technology architecture, business performance tools and cost excellence.
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