The Dow Jones Industrial Average is trading up Tuesday morning with shares of Dow Inc. and American Express delivering the strongest returns for the blue-chip average. The Dow /zigman2/quotes/210598065/realtime DJIA +0.36% was most recently trading 81 points (0.3%) higher, as shares of Dow Inc. /zigman2/quotes/203121064/composite DOW +2.06% and American Express /zigman2/quotes/203805826/composite AXP +0.30% are contributing to the index's intraday rally. Dow Inc.'s shares are up $0.98 (2.5%) while those of American Express are up $2.23 (2.3%), combining for an approximately 22-point boost for the Dow. Boeing /zigman2/quotes/208579720/composite BA +0.27% , Exxon Mobil /zigman2/quotes/204455864/composite XOM +0.85% , and Chevron /zigman2/quotes/205871374/composite CVX +0.79% are also contributing significantly to the gain. A $1 move in any of the Dow's 30 components equates to a 6.86-point swing.