shares of aon plc aon slipped 248 to 28149 monday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 075 to 387198 and dow jones industrial average djia falling 039 to 3273295 the stocks fall snapped a twoday winning streak aon plc closed 6049 below its 52week high 34198 which the company achieved on april 21st the stock underperformed when compared to some of its competitors monday as moodys corp mco fell 157 to 26487 equifax inc efx fell 079 to 16954 and orix corp adr ix fell 027 to 7323 trading volume 11 m eclipsed its 50day average volume of 817850 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