Top 10 Commercial Insurance Brokers Of U.S. Business By Revenue, 2024 (1)
($ millions)
| Rank | Company | Brokerage revenues |
|---|---|---|
| 1 | Marsh & McLennan Cos. Inc. (2), (3) | $12,666 |
| 2 | Aon PLC (2), (4) | 7,497 |
| 3 | Arthur J. Gallagher & Co. (2) | 7,092 |
| 4 | Willis Towers Watson PLC | 5,064 |
| 5 | Alliant Insurance Services Inc. (2) | 4,970 |
| 6 | Brown & Brown Inc. (2) | 4,037 |
| 7 | Hub International Ltd. (2) | 3,814 |
| 8 | Acrisure LLC | 3,482 |
| 9 | Lockton Cos. LLC (2), (5) | 2,875 |
| 10 | AssuredPartners Inc. (2) | 2,810 |
(1) Companies that derive more than 49 percent of revenues from personal lines are not ranked.
(2) Reported U.S. acquisitions in 2024.
(3) Reported acquisition of McGriff Insurance Services November 15, 2024.
(4) Report acquisition of NFP Corp. April 24, 2024.
(5) Fiscal year ending April 30, 2024.
Source: Business Insurance (www.businessinsurance.com), June/July 2025.