The Dow Jones Industrial Average is soaring Tuesday morning with shares of Dow Inc. and American Express delivering strong returns for the index. Shares of Dow Inc. /zigman2/quotes/203121064/composite DOW -1.20% and American Express /zigman2/quotes/203805826/composite AXP -0.31% have contributed to the index's intraday rally, as the Dow /zigman2/quotes/210598065/realtime DJIA -0.09% was most recently trading 607 points higher (2.7%). Dow Inc.'s shares have climbed $3.39, or 11.1%, while those of American Express have risen $6.88 (8.2%), combining for an approximately 70-point bump for the Dow. Chevron /zigman2/quotes/205871374/composite CVX -1.42% , Walt Disney /zigman2/quotes/203410047/composite DIS -1.37% , and Exxon Mobil /zigman2/quotes/204455864/composite XOM -2.05% are also contributing significantly to the gain. A $1 move in any of the benchmark's 30 components equates to a 6.86-point swing.