shares of aon plc aon sank 015 to 31790 monday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 004 to 446118 and dow jones industrial average djia falling 058 to 3455299 the stocks fall snapped an eightday winning streak aon plc closed 835 short of its 52week high 32625 which the company achieved on october 29th the stock demonstrated a mixed performance when compared to some of its competitors monday as moodys corp mco fell 133 to 32681 equifax inc efx fell 136 to 23784 and orix corp adr ix rose 016 to 9926 trading volume 20 m eclipsed its 50day average volume of 14 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