Aon plc
AON · NYSE
Company research
Aon plc (NYSE: AON) is a leading global professional services firm incorporated in Ireland and headquartered in London, ranking as the world's second-largest insurance broker with operations spanning more than 120 countries and approximately 60,000 employees. The company operates through two core segments — Risk Capital and Human Capital — delivering a comprehensive suite of services including commercial risk brokerage, reinsurance solutions, health benefits consulting, and retirement and wealth advisory. Founded in 1982 and serving roughly 80% of the Fortune 500, Aon leverages proprietary data analytics and its Aon Business Services platform to help corporations, governments, and institutions identify, quantify, and manage complex risks while optimizing workforce performance. With FY2024 revenues of approximately $15.7 billion and an expanding operating margin of ~31.5%, Aon is ranked 300th on the Fortune 500 and continues to strengthen its market position under the leadership of long-tenured CEO Gregory C. Case.