shares of genuine parts co gpc slipped 041 to 12317 wednesday on what proved to be an allaround favorable trading session for the stock market with the sp 500 index spx rising 041 to 436355 and the dow jones industrial average djia rising 030 to 3441699 the stocks fall snapped a threeday winning streak genuine parts co closed 1276 short of its 52week high 13593 which the company achieved on may 10th the stock demonstrated a mixed performance when compared to some of its competitors wednesday