Aon is the second-largest insurance broker in the world and is ranked on both the Fortune 500 and the Forbes Global 2000, serving clients across more than 120 countries.
It organizes its expertise into integrated Risk Capital and Human Capital teams, allowing clients to connect insurance, reinsurance, health, retirement and talent decisions through a single advisory platform supported by proprietary data and analytics.
Aon reported full-year 2025 total revenue of $17.18 billion with 9 percent total revenue growth and 6 percent organic growth, and it paid down $1.9 billion of debt during the year.
For 2026 the firm guided to mid-single-digit or higher organic revenue growth, 70 to 80 basis points of adjusted operating margin expansion, strong adjusted earnings per share growth and double-digit free cash flow growth under its Aon United and 3x3 plans.
Aon delivers advisory and brokerage services through two divisions. Risk Capital covers commercial risk transfer, claims management, reinsurance, risk analytics, risk management and risk retention.
Human Capital spans health and benefits, human capital analytics, investments, pensions and retirement, talent and rewards, and workplace wellbeing, supported by tools such as its Contract AI reinsurance coverage analysis product.