shares of aon plc aon sank 028 to 29214 monday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 024 to 437394 and dow jones industrial average djia falling 049 to 3389260 the stocks fall snapped a twoday winning streak aon plc closed 3411 below 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 052 to 32203 equifax inc efx fell 010 to 21834 and orix corp adr ix rose 047 to 9859 trading volume 14 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