shares of costco wholesale corp cost slumped 068 to 48752 wednesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 165 to 393697 and dow jones industrial average djia falling 163 to 3203011 the stocks fall snapped a twoday winning streak costco wholesale corp closed 12475 short of its 52week high 61227 which the company achieved on april 7th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as amazoncom inc amzn fell 190 to 9870 and walmart inc wmt fell 064 to 13952 trading volume 13 m remained 653207 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