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Valued at $17 billion by market cap, Quest Diagnostics Incorporated (DGX) is a prominent provider of diagnostic testing services. The Secaucus, New Jersey-based company specializes in providing a broad range of diagnostic information services, including clinical testing and risk assessment solutions, both in the U.S. and internationally.
Companies worth $10 billion or more are generally described as “large-cap stocks,” and DGX effortlessly fits that description, with its market cap exceeding this mark, underscoring its size, influence, and dominance within the diagnostics and research industry.