Aon Stock Outlook: Is Wall Street Bullish or Bearish?

With a market cap of $66.4 billion, Aon plc (AON) is a multinational professional services company specializing in risk, retirement, and health solutions. The Ireland-based company helps businesses identify, manage, and transfer risks while also advising on human capital strategy, insurance brokerage, reinsurance, wealth solutions, and employee benefits.

Shares of this leading professional services firm have underperformed the broader market over the past year. AON has declined 10.5% over this time frame, while the broader S&P 500 Index ($SPX) has rallied nearly 27.3%. In 2026, AON stock is down 10.6%, compared to the SPX’s 9.6% rise on a YTD basis.