The Dow Jones Industrial Average is up Monday afternoon with shares of Caterpillar and Boeing delivering the strongest returns for the blue-chip average. Shares of Caterpillar and Boeing are contributing to the blue-chip gauge’s intraday rally, as the Dow was most recently trading 75 points (0.2%) higher. Caterpillar’s shares have risen $3.77 (1.6%) while those of Boeing are up $2.42, or 1.2%, combining for an approximately 41-point boost for the Dow. JPMorgan Chase Apple and 3M are also contributing significantly to the gain. A $1 move in any one of the 30 components of the benchmark equates to a 6.59-point swing.