shares of ross stores inc rost slid 065 to 10247 wednesday on what proved to be an allaround favorable trading session for the stock market with the sp 500 index spx rising 142 to 402781 and the dow jones industrial average djia rising 100 to 3271760 ross stores inc closed 1998 below its 52week high 12245 which the company reached on january 6th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as amazoncom inc amzn rose 310 to 10025 target corp