Marsh McLennan vs S&P Global
Side-by-side comparison of AI visibility scores, market position, and capabilities
World's largest insurance broker network (Marsh, Guy Carpenter, Mercer, Oliver Wyman); $23.4B FY2024 revenue; hard market tailwind 2019-2024; cyber insurance leader; competes with Aon, Willis Towers Watson.
About
Marsh McLennan is the world's leading professional services firm in risk, strategy, and human resources, formed through the merger of Marsh & McLennan Companies and operating four market-leading subsidiaries: Marsh (global insurance broker and risk management advisor), Guy Carpenter (global reinsurance broker), Mercer (human resources and employee benefits consulting), and Oliver Wyman (management consulting). Headquartered in New York City and trading on NYSE (MMC), the company generated approximately $23.4 billion in revenues for FY2024 under CEO John Doyle, who succeeded longtime CEO Dan Glaser in 2022 and has maintained the firm's organic growth momentum and selective acquisition strategy. Marsh, the flagship insurance brokerage, is the world's largest insurance broker by revenue, advising corporations globally on risk placement, captive insurance programs, and risk management strategies across property, casualty, marine, and specialty lines.
S&P Global (SPGI) reported $14.2B revenue in FY2024, up 14% YoY. Leading financial data and ratings company. S&P 500 index, credit ratings, market intelligence. HQ: New York, NY.
About
S&P Global Inc. is a leading provider of financial intelligence, credit ratings, data, research, and benchmarks, headquartered in New York City. Formed through the 2022 merger of S&P Global and IHS Markit, the combined company reported revenues of $14.2B in FY2024, up 14% year-over-year, with a market capitalization of approximately $160B. S&P Global is one of the few companies considered truly irreplaceable in the global financial system — it maintains the S&P 500 index, assigns credit ratings to sovereign and corporate debt globally, and provides the data infrastructure that powers financial markets.
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