Behind losses for shares of Chevron and Dow Inc., the Dow Jones Industrial Average is falling Tuesday morning. Shares of Chevron CVX, -3.66% and Dow Inc. DOW, -2.21% are contributing to the blue-chip gauge’s intraday decline, as the Dow DJIA, -0.83% was most recently trading 152 points (0.6%) lower. Chevron’s shares are off $2.09, or 2.8%, while those of Dow Inc. are down $0.90 (1.9%), combining for an approximately 20-point drag on the Dow. Travelers TRV, -3.01%, Boeing BA, -1.85%, and Walt Disney DIS, -1.61% are also contributing significantly to the decline. A $1 move in any of the benchmark’s 30 components results in a 6.58-point swing.