behind negative returns for shares of caterpillar and ibm the dow jones industrial average is seeing a selloff tuesday afternoon shares of caterpillar cat and ibm ibm have contributed to the bluechip gauges intraday decline as the dow djia was most recently trading 385 points lower 12 caterpillars shares are off 657 37 while those of ibm are down 520 37 combining for a roughly 78point drag on the dow other components contributing significantly to the decline include chevron cvx  unitedhealth unh  and travelers trv  a 1 move in any one of the 30 components of the benchmark 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