Shares of Visa and Salesforce.com Inc. are trading lower Monday morning, propelling the Dow Jones Industrial Average selloff. Shares of Visa V, -3.84% and Salesforce.com Inc. CRM, -3.16% have contributed to the index’s intraday decline, as the Dow DJIA, -1.29% was most recently trading 361 points (1.1%) lower. Visa’s shares are off $7.99, or 3.5%, while those of Salesforce.com Inc. have declined $7.08 (2.6%), combining for a roughly 99-point drag on the Dow. Other components contributing significantly to the decline include Microsoft MSFT, -2.68%, Apple Inc. AAPL, -2.61%, and Johnson & Johnson JNJ, -1.59%. A $1 move in any one of the 30 components of the Dow equates to a 6.58-point swing.