Behind negative returns for shares of Dow Inc. and American Express, the Dow Jones Industrial Average is falling Tuesday afternoon. The Dow /zigman2/quotes/210598065/realtime DJIA +0.89% was most recently trading 72 points, or 0.3%, lower, as shares of Dow Inc. /zigman2/quotes/203121064/composite DOW +0.81% and American Express /zigman2/quotes/203805826/composite AXP +1.03% have contributed to the blue-chip gauge's intraday decline. Dow Inc.'s shares are down $2.31, or 5.1%, while those of American Express have fallen $2.03, or 1.6%, combining for an approximately 29-point drag on the Dow. IBM /zigman2/quotes/203856914/composite IBM +0.68% , Intel /zigman2/quotes/203649727/composite INTC +1.96% , and Pfizer /zigman2/quotes/202877789/composite PFE +0.55% are also contributing significantly to the decline. A $1 move in any one of the 30 components of the index results in a 6.78-point swing.