shares of ibm and merck are retreating tuesday morning dragging the dow jones industrial average into negative territory the dow djia was most recently trading 263 points lower 07 as shares of ibm ibm and merck mrk are contributing to the indexs intraday decline ibms shares have fallen 604 or 45 while those of merck are off 117 14 combining for a roughly 47point drag on the dow also contributing significantly to the decline are caterpillar cat  johnson  johnson jnj  and procter  gamble pg  a 1 move in any of the benchmarks 30 components results in 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