shares of aon plc aon inched 009 higher to 29255 monday on what proved to be an allaround favorable trading session for the stock market with the sp 500 index spx rising 023 to 446873 and the dow jones industrial average djia rising 076 to 3486963 aon plc closed 191 short of its 52week high 29446 which the company achieved on september 9th the stock demonstrated a mixed performance when compared to some of its competitors monday as moodys corp mco fell 088 to 37917 equifax inc efx rose 036 to 27385 and orix corp adr ix rose 131 to 9908 trading volume 11 m remained 10 million below its 50day average volume of 21 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