shares of costco wholesale corp cost inched 045 higher to 50189 thursday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 017 to 413062 and dow jones industrial average djia falling 066 to 3330951 costco wholesale corp closed 6286 below its 52week high 56475 which the company reached on august 18th the stock demonstrated a mixed performance when compared to some of its competitors thursday as amazoncom inc amzn rose 181 to 11218 and walmart inc wmt rose 037 to 15312 trading volume 10 m remained 859653 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