The Dow Jones Industrial Average is soaring Tuesday morning with shares of Dow Inc. and American Express delivering the strongest returns for the index. Shares of Dow Inc. /zigman2/quotes/203121064/composite DOW -0.28% and American Express /zigman2/quotes/203805826/composite AXP -3.05% have contributed about a third of the index's intraday rally, as the Dow /zigman2/quotes/210598065/realtime DJIA -0.07% was most recently trading 623 points (2.8%) higher. Dow Inc.'s shares are up $3.43 (11.2%) while those of American Express are up $7.14, or 8.5%, combining for an approximately 73-point bump for the Dow. Chevron /zigman2/quotes/205871374/composite CVX +0.91% , Exxon Mobil /zigman2/quotes/204455864/composite XOM +0.95% , and Raytheon Technologies Corp. /zigman2/quotes/203237915/composite RTX -4.09% are also contributing significantly to the gain. A $1 move in any one of the 30 components of the benchmark results in a 6.86-point swing.