shares of mckesson corp mck slipped 144 to 32155 tuesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 201 to 382155 and dow jones industrial average djia falling 156 to 3094699 the stocks fall snapped a fiveday winning streak mckesson corp closed 1839 below its 52week high 33994 which the company achieved on may 11th trading volume 852753 remained 352669 below 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