Aon plc AON

Company Overview

Aon plc is a global professional services firm specializing in risk management, insurance brokerage, reinsurance brokerage, and human capital consulting. The company operates primarily across the insurance and financial services industries, advising organizations on risk transfer, risk mitigation, and workforce-related decisions. Aon generates revenue mainly through advisory and brokerage fees tied to insurance placement, reinsurance structuring, and consulting engagements rather than assuming underwriting risk itself.

The company serves a broad range of customers, including multinational corporations, small and mid-sized enterprises, public sector entities, insurers, and pension funds. Aon is positioned as a data-driven advisory firm, emphasizing proprietary analytics, risk modeling, and integrated solutions that link risk, capital, and people. Founded in 1919 as the Ryan Insurance Group in Chicago, the firm evolved through mergers and acquisitions, adopting the Aon name in 1987 and reorganizing as Aon plc in 2012 with an Irish parent structure while maintaining substantial U.S. operations.