shares of marsh  mclennan cos mmc inched 091 higher to 15762 wednesday on what proved to be an allaround favorable trading session for the stock market with the sp 500 index spx rising 036 to 384508 and the dow jones industrial average djia rising 023 to 3103768 marsh  mclennan cos closed 2552 short of its 52week high 18314 which the company achieved on april 21st the stock demonstrated a mixed performance when compared to some of its competitors wednesday as prudential plc pukpf fell 294 to 1148 willis towers watson plc wtw rose 065 to 20213 and arthur j gallagher  co ajg rose 137 to 16834 trading volume 16 m remained 267809 below its 50day average volume of 19 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