Marsh McLennan is a global professional services firm headquartered in New York City, founded in 1905. The company operates through four main businesses: Marsh, Guy Carpenter, Mercer, and Oliver Wyman. These units provide expertise in risk management, insurance and reinsurance brokerage, human resources consulting, and strategic advisory services. Marsh focuses on insurance broking and risk advisory, while Guy Carpenter delivers reinsurance and capital solutions. Mercer offers consulting in health, wealth, and career, and Oliver Wyman provides management consulting across industries. Marsh McLennan serves clients in more than 130 countries, addressing complex challenges related to risk, strategy, and workforce. The company is publicly traded on the New York Stock Exchange under the ticker symbol MMC. Its integrated approach combines data-driven insights with industry expertise to help organizations navigate evolving risks and opportunities in a dynamic global environment.
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