Companies
Aon
InsuranceDublin, IrelandAONAbout 60,000 employees
More about Aon
Professional services firm offering insurance and reinsurance brokerage, risk advice, and health, retirement and workforce consulting to businesses
Revenue
$17.2B
Fiscal 2025, up about 9%
Employees
About 60,000
As of December 2025
Stock
AON
New York Stock Exchange
Headquarters
Dublin, Ireland
CEO
Greg Case
Since April 2005
Main businessesRisk Capital, Human Capital
Current strategy"Aon United" strategy using AI-enabled analytics and new sources of capital to broaden its client base, while integrating the NFP acquisition
CompetitorsMarsh McLennan, WTW, Gallagher
Related companiesMarsh McLennanWillis Towers WatsonArthur J. Gallagher & Co.
Checked October 11, 2026 · Sources: sec.gov, sec.gov (2)
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