Marsh & Mclennan Companies, Inc.
A giant in insurance broking and consulting, Marsh McLennan helps companies manage risk through its Marsh, Guy Carpenter, Mercer, and Oliver Wyman brands, serving clients across dozens of countries. It began when rival brokers Henry Marsh and Donald McLennan were told by a railroad's directors to work together, merging their firms in 1905. Founder Henry Marsh once defended chasing big corporate clients by asking, "What's the use of shooting hummingbirds when elephants are so much easier to hit?"