shares of cisco and merck are trading lower friday morning dragging the dow jones industrial average into negative territory the dow djia was most recently trading 117 points or 03 lower as shares of cisco csco and merck mrk are contributing to the indexs intraday decline ciscos shares have declined 140 31 while those of merck have fallen 303 or 30 combining for an approximately 29point drag on the dow unitedhealth unh  johnson  johnson jnj  and amgen amgn are also contributing significantly to the decline a 1 move in any one of the 30 components of the benchmark equates to a 659point swing 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