Who are the big 3 insurance brokers?
The “Big Three” global brokers – Marsh, Aon, and Willis Towers Watson – are dominant in the large corporate segment, handling complex multinational placements, specialty risks, and providing risk management consulting. As of 2019, the largest insurance brokers in the world by revenue are Marsh & McLennan, Aon plc, Willis Towers Watson, Arthur J. Gallagher and Hub International.