Companies › Finance

Marsh McLennan MMC

FinanceMarket cap $96B5 connections

Explore Marsh McLennan on the interactive map Relationship timeline Find a path to another company

Customers 1

Companies Marsh McLennan sells to

JPMorgan ChaseFinance · $600BRisk analytics client

Competitors 4

Companies it competes with

Aon plcFinance · $68BRisk consulting competition
Arthur J. GallagherFinance · $55BInsurance brokerage rivalry
Willis Towers WatsonFinance · $28BBenefits consulting rivalry
Brown & BrownFinance · $22BInsurance brokerage

Other Finance companies

Berkshire Hathaway JPMorgan Chase Visa Mastercard Bank of America Wells Fargo American Express Blackstone Goldman Sachs HSBC

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Relationships are compiled by VexMap from company filings, announcements and reporting, and last reviewed September 2026. Spotted something wrong? Tell us. Not investment advice.