Quest Diagnostics Inc. (DGX) is a leading global provider of diagnostic testing, information and services that patients and doctors need to make better healthcare decisions. The company operates primarily in the United States but has continued to expand globally through strategic acquisitions and partnerships. With its headquarters located in Secaucus, New Jersey, Quest Diagnostics is listed on the New York Stock Exchange under the symbol 'DGX'.
Established in 1967, the company has a rich history of innovation, quality and customer care. With an extensive network of testing facilities and a diversified service portfolio, the company has managed to build a reputation as an industry leader. Quest Diagnostics offers services that range from routine blood tests, such as total cholesterol, pap testing and white blood cell count, to complex, gene-based and molecular testing. They also offer a wide variety of tests that are used in the detection, diagnosis and treatment of cancer, heart disease, infectious disease, neurological disorders and other conditions.
In addition to testing services, Quest Diagnostics provides interpretive consultation through the largest medical and scientific staff in the industry. More than half a million people from hospitals, clinics, doctors' offices, employers, and patients at home utilize Quest Diagnostics’ services daily because they know they can count on reliable, fast, and accurate results.
What sets Quest Diagnostics apart is its commitment to advancing healthcare and bettering patient experiences through data-driven insights and analytics. Through its Health Trends studies and the Quest Diagnostics Health & Wellness division, the company seeks to empower better health and wellness strategies and inspire policies based on substantial and reliable healthcare data. These studies provide insights on a wide variety of health issues, including deadly diseases such as cancer and diabetes, helping the healthcare community make informed prevention and treatment plans.
Looking toward the future, Quest Diagnostics aims to remain at the forefront of the diagnostic testing industry by continuing to expand its scale and scope while maintaining a commitment to upholding the highest standards of quality and service. Its continuous strive for innovation, paired with its trusted brand in the healthcare sector, lends it a competitive edge in the growing global diagnostics market.
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Shares of Quest Diagnostics Inc. rose 2.97% to $252.92 on Thursday, outperforming the broader market as the S&P 500 Index and Dow Jones Industrial Average both experienced declines. This marked the stock's second consecutive day of gains despite a challenging trading session overall.

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Shares of Quest Diagnostics Inc. (DGX) rose 1.26% to $245.62, outperforming the broader market on a strong trading day where the S&P 500 Index and Dow Jones Industrial Average also saw gains. The company's stock closed 1.29% below its 52-week high of $248.84, reached on September 21st.