shares of amerisourcebergen corp abc slumped 068 to 15556 tuesday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 030 to 397015 and dow jones industrial average djia falling 071 to 3265670 this was the stocks sixth consecutive day of losses amerisourcebergen corp closed 1907 short of its 52week high 17463 which the company achieved on december 2nd the stock demonstrated a mixed performance when compared to some of its competitors