Powered by strong returns for shares of Apple Inc. and Chevron, the Dow Jones Industrial Average is rallying Tuesday morning. Shares of Apple Inc. AAPL, +3.69% and Chevron CVX, +3.28% are contributing to the index’s intraday rally, as the Dow DJIA, +1.79% was most recently trading 452 points higher (1.5%). Apple Inc.’s shares have climbed $4.08, or 3.1%, while those of Chevron have risen $4.58 (3.1%), combining for an approximately 57-point boost for the Dow. Also contributing significantly to the gain are Merck MRK, +2.56%, UnitedHealth UNH, +3.11%, and JPMorgan Chase JPM, +2.81%. A $1 move in any of the benchmark’s 30 components results in a 6.59-point swing.