shares of willis towers watson plc wltw shed 197 to 22584 tuesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 190 to 456700 and dow jones industrial average djia falling 186 to 3448372 willis towers watson plc closed 4603 short of its 52week high 27187 which the company achieved on may 10th the stock underperformed when compared to some of its competitors tuesday as marsh  mclennan cos mmc fell 180 to 16402 arthur j gallagher  co ajg fell 116 to 16290 and brown  brown inc bro fell 153 to 6441 trading volume 13 m remained 141763 below 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