Powered by strong returns for shares of Boeing and Merck, the Dow Jones Industrial Average is climbing Wednesday afternoon. The Dow DJIA, +0.45% is trading 243 points higher (0.7%), as shares of Boeing BA, +3.47% and Merck MRK, +2.91% are contributing to the index’s intraday rally. Boeing’s shares are up $7.91 (3.6%) while those of Merck are up $1.96 (2.7%), combining for an approximately 65-point bump for the Dow. Amgen Inc. AMGN, +1.36%, Walgreens Boots WBA, +1.38%, and IBM IBM, +1.29% 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.