shares of marsh  mclennan cos mmc slid 036 to 19200 wednesday on what proved to be an allaround mixed trading session for the stock market with the dow jones industrial average djia rising 023 to 3552012 and the sp 500 index spx falling 002 to 456675 marsh  mclennan cos closed 216 short of its 52week high 19416 which the company achieved on july 21st the stock underperformed when compared to some of its competitors wednesday as accenture plc cl a acn fell 034 to 31651 chubb ltd cb rose 530 to 20589 and american international group inc aig rose 159 to 6084 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