Aon - 45 Year Stock Price History | AON

The latest closing stock price for Aon as of June 05, 2025 is 370.49.

  • An investor who bought $1,000 worth of Aon stock at the IPO in 1980 would have $282,944 today, roughly 283 times their original investment - a 13.37% compound annual growth rate over 45 years.
  • The all-time high Aon stock closing price was 408.46 on March 03, 2025.
  • The Aon 52-week high stock price is 412.97, which is 11.5% above the current share price.
  • The Aon 52-week low stock price is 283.27, which is 23.5% below the current share price.
  • The average Aon stock price for the last 52 weeks is 356.39.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.

Aon - 45 Year Stock Price History | AON

  • An investor who bought $1,000 worth of Aon stock at the IPO in 1980 would have $282,944 today, roughly 283 times their original investment - a 13.37% compound annual growth rate over 45 years.
  • The all-time high Aon stock closing price was 408.46 on March 03, 2025.
  • The Aon 52-week high stock price is 412.97, which is 11.5% above the current share price.
  • The Aon 52-week low stock price is 283.27, which is 23.5% below the current share price.
  • The average Aon stock price for the last 52 weeks is 356.39.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.