Marsh

Marsh is the current brand of Marsh & McLennan Companies, which changed its brand name from Marsh McLennan to Marsh on January 14, 2026. The company traces its heritage to 1871 and developed from an insurance-broking partnership formed by Marsh, McLennan, and Daniel M. Burrows in the early 1900s.

The group advises clients on risk, reinsurance and capital, people and investments, and management consulting. Its portfolio includes Marsh Risk, Guy Carpenter, Mercer, and Oliver Wyman, although several businesses are transitioning to aligned Marsh branding.

Its strongest position is in insurance-related services: risk and insurance activities accounted for approximately 64% of 2025 revenue, while Marsh Risk alone generated approximately 54%. The firm combines brokerage and risk advisory with reinsurance, actuarial analysis, workforce consulting, investment advice, and strategy work.