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Valued at $199.1 billion by market cap, Merck & Co., Inc. (MRK) is a leading American biopharmaceutical company based in Rahway, New Jersey. With a strong global presence, Merck develops prescription medicines, vaccines, biologic therapies, and animal health products, chiefly across oncology, immunology, infectious disease, and cardio-metabolic areas.
Shares of Merck have slid 30.3% over the past year, significantly lagging behind the S&P 500 Index’s ($SPX) 14.5% rise. This downward trend has persisted into 2025, with MRK down 20.3% year-to-date, in sharp contrast to the S&P 500’s 6.1% gain.