MAs of July 2026, Marsh & McLennan Companies, Inc. has a market cap of $89.82B and ranks 195th among the world’s most valuable companies tracked here.
Marsh & McLennan Companies (MMC) operates as a leading global professional services organization, delivering expert guidance and innovative solutions to clients worldwide across the critical domains of risk, strategic planning, and human capital. Its operations are bifurcated into two primary divisions: Risk and Insurance Services, and Consulting.
The Risk and Insurance Services arm provides an extensive range of risk management capabilities, encompassing strategic risk advice, risk transfer mechanisms, and solutions for risk control and mitigation. This segment is also proficient in insurance and reinsurance brokerage, offers sophisticated catastrophe and financial modeling, delivers associated advisory services, and manages insurance programs.
Its diverse clientele includes businesses, governmental bodies, insurance companies, associations, specialized professional service organizations, and private individuals. Conversely, the Consulting division specializes in advisory services and products related to health, wealth, and career development.
It also extends its expertise to specialized management, economic analysis, and brand strategy consulting. Founded in 1871, Marsh & McLennan Companies, Inc. maintains its corporate headquarters in New York, New York.