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Marsh McLennan (MMC) reported revenue of $7.40B in Q2 2026, with Marsh Insurance Group its largest revenue segment at 70%.
Q3 2016-Q2 2026
Q3 2016-Q2 2026
Marsh McLennanLargest insurance broker: Marsh + Guy Carpenter + Mercer + Oliver Wyman; ~$24B 2024 revenue; fee-based, not balance-sheet risk.
Marsh McLennan (MMC) is an Insurance: Brokerage company. Largest insurance broker: Marsh + Guy Carpenter + Mercer + Oliver Wyman; ~$24B 2024 revenue; fee-based, not balance-sheet risk. It was founded in 1905, is headquartered in New York, NY and employs about 90,000 people.
As of 2026-Q1, Marsh McLennan's revenue breaks down across Marsh Insurance Group (70%), Mercer Consulting Group (13%), Guy Carpenter Reinsurance Group (10%), Oliver Wyman Group Consulting Group (7%). See the revenue-by-segment chart for the full mix.
Track Marsh McLennan's quarterly and annual revenue, gross and net margins, and EPS in the interactive charts on this page. Data last updated August 19, 2026.
Sterling groups Marsh McLennan in the Insurance sector, alongside Aon (AON), Arthur J. Gallagher (AJG), Brown & Brown (BRO), Willis Towers Watson (WTW) and Erie Indemnity (ERIE).
If you are researching Marsh McLennan, also look at Aon (AON), Arthur J. Gallagher (AJG) and Brown & Brown (BRO). You can compare all of them side by side or browse the full Insurance sector on Sterling.