By MarketWatch Automation
The Dow Jones Industrial Average is rallying Wednesday afternoon with shares of American Express and Amgen Inc. leading the way for the blue-chip average. The Dow /zigman2/quotes/210598065/realtime DJIA -0.35% is trading 488 points (1.8%) higher, as shares of American Express /zigman2/quotes/203805826/composite AXP -1.66% and Amgen Inc. /zigman2/quotes/209157011/composite AMGN -0.92% have contributed about 25% of the index's intraday rally. American Express's shares are up $3.01, or 3.1%, while those of Amgen Inc. have gained $6.98 (2.8%), combining for an approximately 66-point boost for the Dow. Also contributing significantly to the gain are UnitedHealth /zigman2/quotes/210453738/composite UNH -0.19% , Goldman Sachs /zigman2/quotes/209237603/composite GS -2.46% , and Salesforce.com Inc. /zigman2/quotes/200515854/composite CRM -0.68% . A $1 move in any one of the 30 components of the benchmark results in a 6.58-point swing.