About Business
Marsh & McLennan is a U.S.-based firm formed in 1905 and headquartered in New York City, New York, U.S. The firm provides insurance brokerage, talent management, and consulting services. It operates four companies or subsidiaries under this name, including Mercer, Guy Carpenter, Marsh, and Oliver Wyman. The company was started in 1905 by Henry W. Marsh and Donald R. McLennan, who renamed it Marsh & McLennan in 1906. Soon after, the company acquired Putnam Investments to add mutual funds services to its business. The company ranked 212 on the Fortune 500 list and was announced as the largest insurance broker worldwide in 2017.