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Top 10 Commercial Insurance Brokers Of U.S. Business By Revenue, 2017 (1)

($ millions)

Rank Company Brokerage revenues
1 Marsh & McLennan Cos. Inc. (2) $6,877.2
2 Aon P.L.C. (2) 4,411.0
3 Willis Towers Watson P.L.C. 3,814.5
4 Arthur J. Gallagher & Co. (2) 3,132.2
5 BB&T Insurance Holdings Inc. (2) 1,918.3
6 Brown & Brown Inc. (2) 1,857.3
7 USI Insurance Services L.L.C. (2) 1,635.0
8 Hub International Ltd. (2) 1,459.4
9 Lockton Cos. L.L.C. (2), (3) 1,157.6
10 Alliant Insurance Services Inc. (2)  1,123.6
(1) Companies that derive more than 49 percent of revenues from personal lines are not ranked. (2) Reported U.S. acquisitions in 2017. (3) Fiscal year ending April 30. Source: Business Insurance (www.businessinsurance.com), July 2018.