Top 10 Global Insurance Brokers By Revenues, 2024 (1)
(US$ millions)
| Rank | Company | Brokerage revenues | Country |
|---|---|---|---|
| 1 | Marsh & McLennan Cos. Inc. (2) | $25,331 | United States |
| 2 | Aon PLC (3) | 15,382 | Ireland |
| 3 | Arthur J. Gallagher & Co. | 11,082 | United States |
| 4 | Willis Towers Watson PLC | 9,739 | United Kingdom |
| 5 | Alliant Insurance Services, Inc. | 4,996 | United States |
| 6 | Hub International Ltd. | 4,768 | United States |
| 7 | Brown & Brown Inc. | 4,705 | United States |
| 8 | Acrisure LLC | 3,953 | United States |
| 9 | Lockton Cos. LLC (2) (4) | 3,938 | United States |
| 10 | Howden Insurance Brokers Ltd. (5) | 3,773 | United Kingdom |
(1) Revenue generated by insurance brokerage and related services.
(2) Acquisition of McGriff Insurance Services November 15, 2024.
(3) Acquisition of NFP Corp. April 24, 2024.
(4) Fiscal year ending April 30, 2024.
(5) Fiscal year ending September 30, 2024
Source: Business Insurance (www.businessinsurance.com), June/July 2025.