shares of aon plc aon slid 204 to 28212 monday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 057 to 415538 and the dow jones industrial average djia rising 026 to 3306150 this was the stocks second consecutive day of losses aon plc closed 5986 short of its 52week high 34198 which the company reached on april 21st the stock demonstrated a mixed performance when compared to some of its competitors monday as moodys corp mco fell 485 to 30113 equifax inc efx rose 097 to 20550 and orix corp adr ix fell 057 to 9029 trading volume 15 m eclipsed its 50day average volume of 12 m editors note this story was autogenerated by automated insights an automation technology provider using data from dow jones and factset see our market data terms of use