Marsh insurance has decided it wants to be a racing car. And you know what? fair play to them

Let’s start with the rebrand, because it’s important context. Effective January 14th 2026, Marsh McLennan updated its brand name to simply “Marsh,” consolidating a sprawling empire of sub-brands in the process. Its stock ticker changed from MMC to MRSH, and its four businesses — Marsh, Mercer, Guy Carpenter, and Oliver Wyman — began migrating under the unified Marsh umbrella. Guy Carpenter, for instance, will become Marsh Re. Even Oliver Wyman, which sounds like a perfectly reasonable human being, will eventually be known as “Oliver Wyman, a Marsh business,” which sounds like something you’d find stamped on the back of a manila folder in a filing cabinet that hasn’t been opened since 1987.