The Dow Jones Industrial Average is slumping Wednesday afternoon with shares of American Express and Exxon Mobil seeing the biggest losses for the blue-chip average. Shares of American Express /zigman2/quotes/203805826/composite AXP +2.94% and Exxon Mobil /zigman2/quotes/204455864/composite XOM +3.12% have contributed to the blue-chip gauge's intraday decline, as the Dow /zigman2/quotes/210598065/realtime DJIA +1.44% was most recently trading 585 points lower (-2.5%). American Express's shares are down $5.22, or 6.3%, while those of Exxon Mobil have dropped $2.23, or 5.1%, combining for a roughly 51-point drag on the Dow. Walgreens Boots /zigman2/quotes/203410933/composite WBA +2.85% , Dow Inc. /zigman2/quotes/203121064/composite DOW +3.35% , and Raytheon Technologies Corp. /zigman2/quotes/203237915/composite RTX +2.63% are also contributing significantly to the decline. A $1 move in any one of the 30 components of the index equates to a 6.86-point swing.