Buoyed by strong returns for shares of Apple Inc. and Walgreens Boots, the Dow Jones Industrial Average is climbing Monday morning. Shares of Apple Inc. (AAPL) and Walgreens Boots (WBA) are contributing to the index’s intraday rally, as the Dow (DJIA) is trading 114 points (0.4%) higher. Apple Inc.’s shares are up $3.53, or 3.0%, while those of Walgreens Boots are up $0.63, or 1.7%, combining for a roughly 27-point bump for the Dow. Caterpillar (CAT) UnitedHealth (UNH) and Intel (INTC) are also contributing significantly to the gain. A $1 move in any of the index’s 30 components results in a 6.58-point swing.