Marsh is a global leader in risk, strategy, and people, advising clients in over 130 countries across four core businesses: Marsh Risk (insurance broking and risk management), Guy Carpenter (reinsurance and capital), Mercer (people and investments), and Oliver Wyman (management consulting), with over 95,000 colleagues and annual revenue exceeding $24 billion. Formerly known as Marsh McLennan (NYSE: MRSH), the company officially changed its brand to Marsh effective January 2026, with its insurance broker now known as Marsh Risk and its stock ticker symbol changing from MMC to MRSH on the New York Stock Exchange in January 2026.
Marsh is headquartered at 1166 Avenue of the Americas, New York, NY 10036, US and operates as a publicly traded company in the professional services industry with 10,001+ employees globally, serving clients across financial services, healthcare, energy, manufacturing, construction, technology, retail, transportation, and the public sector. As the world’s leading insurance broker and risk advisor with offices in more than 130 countries, Marsh provides industry-focused brokerage, consulting, and advisory services across risk, reinsurance and capital, people and investments, and management consulting.
The company’s core brokerage business represents commercial businesses searching for insurance and arranges coverage with other companies that actually offer the policies themselves, while also providing risk management, insurance program management, risk consulting, analytical modeling, and alternative risk financing services to a wide range of businesses, government entities, professional service organizations, and individuals. In 2021, Marsh’s core business generated $10.208 billion in revenue, accounting for 52% of its parent company’s fiscal year revenue, with approximately 45,400 employees in the core brokerage operation. The company’s shared purpose is to “build the confidence to thrive through the power of perspective,” bringing together capabilities across risk, strategy, and people while investing in insights, technology, and AI to deliver greater value to clients.