About Merck & Co., Inc.
Merck & Co., Inc. is a global healthcare company operating through two segments: Pharmaceutical and Animal Health. The Pharmaceutical segment develops and markets human health products, including prescription drugs for oncology, acute hospital care, immunology, neuroscience, virology, cardiovascular conditions, and diabetes, as well as preventive vaccines. The Animal Health segment discovers, develops, manufactures, and markets veterinary pharmaceuticals and vaccines for livestock and companion animals.
Why it matters
Merck is one of the largest pharmaceutical companies globally, with a diversified portfolio spanning key therapeutic areas and vaccines. Its blockbuster drugs like Keytruda (pembrolizumab) in oncology and Gardasil in vaccines drive significant revenue. Investors monitor Merck for its scale, R&D pipeline, and position in the competitive healthcare sector, where it faces peers like Pfizer and Johnson & Johnson.
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