Aon Corporation will be changing the ticker symbol for its common stock listed on the New York Stock Exchange to "AON" from "AOC". The change will become effective at the start of trading on Tuesday, December 1, 2009.

 Greg Case, Aon’s president and CEO said that the Aon name is globally recognized as the industry-leading provider of risk and human capital solutions. Changing the ticker symbol to 'AON' extends this recognition and links the company’s common stock listing with its brand.