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Dublin, Ireland-based Aon plc (AON) is a professional services firm offering a wide range of risk and human capital solutions. Valued at $83.6 billion by market cap, the company’s services include helping manage risk for clients, negotiating and placing insurance risk with other carriers and advising clients related to health and benefits, retirement, compensation, strategic human capital, and human resource outsourcing.
Shares of this leading professional services firm have outperformed the broader market over the past year. AON has gained 24.9% over this time frame, while the broader S&P 500 Index ($SPX) has rallied nearly 23.5%. In 2025, AON stock is up 8.7%, surpassing SPX’s 4% rise on a YTD basis.