Marsh & McLennan stock. Business scale keeps the focus on resilience.

Marsh & McLennan (ISIN US5717481023) is a global professional services firm best known for insurance brokerage, risk management, and consulting. The company trades on the New York Stock Exchange under the ticker MMC.

Business model

The company's revenue base is built around advisory and brokerage services rather than a single product cycle. That structure gives the business a defensive profile because client relationships, placement activity, and consulting demand tend to be recurring.

Its operating mix spans Marsh, Guy Carpenter, Mercer, and Oliver Wyman. Those brands cover risk, reinsurance brokerage, employee benefits, talent, and management consulting across corporate and institutional clients.

Market setup

For US investors, Marsh & McLennan sits inside the large-cap financial-services universe and offers exposure to a service model that is tied more to client budgets and insurance markets than to commodity-like pricing. That makes the stock's appeal more about earnings durability than fast growth.

The company also has broad global reach, which gives it exposure to international insurance pricing, labor-market conditions, and corporate spending trends. Analysts often frame the name as a quality compounder when risk appetite fades and balance-sheet discipline matters more.

Insurance and consulting mix

Marsh remains the core brokerage and risk-advisory franchise, while Guy Carpenter focuses on reinsurance brokerage. Mercer adds health, wealth, and career consulting, and Oliver Wyman brings strategy and management advisory services.

Stock context

The shares trade on the New York Stock Exchange in US dollars. Marsh & McLennan's market position makes it a reference name for investors seeking exposure to insurance distribution and consulting services rather than underwriting risk.