Shares of Dow Inc. and Walgreens Boots are trading lower Thursday afternoon, sending the Dow Jones Industrial Average into negative territory. Shares of Dow Inc. DOW, -6.00% and Walgreens Boots WBA, -2.72% are contributing to the blue-chip gauge’s intraday decline, as the Dow DJIA, -0.94% was most recently trading 267 points (0.8%) lower. Dow Inc.’s shares are off $3.84 (5.9%) while those of Walgreens Boots are off $1.27, or 2.4%, combining for a roughly 34-point drag on the Dow. Other components contributing significantly to the decline include JPMorgan Chase JPM, -2.11%, Intel INTC, -1.77%, and Amgen Inc. AMGN, -1.44%. A $1 move in any one of the 30 components of the index equates to a 6.58-point swing.