The Dow Jones Industrial Average is declining Friday morning with shares of American Express and Salesforce.com Inc. facing the biggest losses for the index. The Dow DJIA, -0.21% was most recently trading 133 points lower (-0.4%), as shares of American Express AXP, -1.68% and Salesforce.com Inc. CRM, +0.42% have contributed to the index’s intraday decline. American Express’s shares have declined $1.74 (1.1%) while those of Salesforce.com Inc. are off $2.12 (0.8%), combining for a roughly 25-point drag on the Dow. Also contributing significantly to the decline are Coca-Cola KO, -0.69%, McDonald’s MCD, -0.29%, and UnitedHealth UNH, -0.36%. A $1 move in any of the Dow’s 30 components results in a 6.58-point swing.