Behind negative returns for shares of Walgreens Boots and Caterpillar, the Dow Jones Industrial Average is falling Monday morning. Shares of Walgreens Boots WBA, -1.59% and Caterpillar CAT, -0.77% are contributing to the blue-chip gauge’s intraday decline, as the Dow DJIA, -0.25% was most recently trading 183 points (0.5%) lower. Walgreens Boots’s shares are off $1.04, or 1.9%, while those of Caterpillar have declined $3.70 (1.7%), combining for an approximately 31-point drag on the Dow. Other components contributing significantly to the decline include Cisco CSCO, -1.10%, JPMorgan Chase JPM, -1.70%, and Home Depot HD, -0.47%. A $1