Merck & Co., Inc. operates as a healthcare company worldwide. The company offers human health pharmaceutical for various areas under the Keytruda, Welireg, Gardasil, ProQuad, M-M-R II, Varivax, Vaxneuvance, RotaTeq, Pneumovax 23, Bridion, Dificid, Zerbaxa, Noxafil, Winrevair, Adempas, Verquvo, Lagevrio, Isentress/Isentress HD, Delstrigo, Pifeltro, Belsomra, Januvia, and Janumet brands. It also provides veterinary pharmaceuticals, vaccines and health management solutions and services, such as livestock products under the Nuflor, Bovilis/Vista, Bovilis Cryptium, Banamine, Estrumate, Matrix, Resflor, Zuprevo, Revalor, Safe-Guard, M+Pac, Porcilis, Circumvent, Nobilis/Innovax, Paracox and Coccivac, Exzolt, Slice, Imvixa, Clynav, Aquavac/Norvax, Aquaflor, Flexolt brands; Allflex Livestock Intelligence solutions; and companion animal products under the Bravecto One-Month, Bravecto Injectable/Quantum, Bravecto Plus, Sentinel Spectrum, Sentinel Flavor Tabs, Optimmune, Nobivac NXT, GilvetMab, Otomax, Mometamax, Mometamax Ultra, Posatex, Caninsulin/Vetsulin, Panacur, Regumate, Prestige, Scalibor/Exspot, Sure Petcare, and Home Again brands. The company has development and commercialization agreement for three of Daiichi Sankyo's deruxtecan ADC candidates; AstraZeneca PLC to co-development and co-commercialize AstraZeneca's Lynparza products for multiple cancer types, and Koselugo for multiple indications; licensed to develop, manufacture and commercialize LM-299, a novel investigational PD-1/VEGF bispecific antibody from LaNova; and collaboration agreement with Eisai Co., Ltd., Bayer AG, and Ridgeback Biotherapeutics LP, as well Moderna, Inc. It has a collaboration agreement with Antengene Corporation Limited to evaluate the combination of ATG-022, a CLDN18.2-targeting antibody-drug conjugate, and anti-PD-1 therapy, as well as KEYTRUDA (pembrolizumab) in patients with advanced solid tumors. Merck & Co., Inc. was founded in 1891 and is headquartered in Rahway, New Jersey.
Merck & Company, Inc. (MRK) reported trailing twelve months (TTM) revenue of $65.01B as of December 2025, which represents a 1.3% increase year-over-year. The company's operating margin has expanded to 53.3% from 27.8% a year ago. In terms of profitability, MRK generated $18.25B in net income. Valuation-wise, the stock trades at a P/E ratio of 14.5x and a Price-to-Sales (P/S) ratio of 4.1x. The company generated $0 in free cash flow over the last twelve months, indicating its ability to reinvest in growth or return capital to shareholders. Data based on the most recent quarterly reports.
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