Shares of Salesforce.com Inc. and Amgen Inc. are trading higher Thursday morning, propelling the Dow Jones Industrial Average into positive territory. The Dow DJIA, +0.92% is trading 178 points (0.5%) higher, as shares of Salesforce.com Inc. CRM, +2.32% and Amgen Inc. AMGN, +2.02% have contributed to the index’s intraday rally. Salesforce.com Inc.’s shares are up $4.25 (1.9%) while those of Amgen Inc. have gained $3.43 (1.4%), combining for a roughly 50-point bump for the Dow. Other components contributing significantly to the gain include Apple Inc. AAPL, +1.93%, Microsoft MSFT, +1.93%, and Visa V, +1.20%. A $1 move in any one of the 30 components of the Dow equates to a 6.58-point swing.