Top 10 Commercial Insurance Brokers Of U.S. Business By Revenue, 2019 (1)

($ millions)

Rank Company Brokerage revenues
1 Marsh & McLennan Cos. Inc. (2), (3) $7,934.4
2 Aon PLC 4,982.7
3 Willis Towers Watson PLC (2) 4,291.7
4 Arthur J. Gallagher & Co. (2) 3,944.3
5 Brown & Brown Inc. (2) 2,384.7
6 Truist Insurance Holdings Inc. (2) 2,270.8
7 Hub International Ltd. (2) 1,841.7
8 USI Insurance Services LLC (2) 1,813.0
9 Acrisure LLC (2) 1,716.2
10 Alliant Insurance Services Inc. (2)  1,576.4
(1) Companies that derive more than 49 percent of revenues from personal lines are not ranked. (2) Reported U.S. acquisitions in 2019. (3) Acquired Assurance Agency Ltd. on April 1, 2020. Business Insurance estimate of pro forma revenue to reflect acquisition. Source: Business Insurance (www.businessinsurance.com), July 2020.