The Dow Jones Industrial Average is trading up Tuesday morning with shares of Merck and Walt Disney leading the way for the price-weighted average. Shares of Merck /zigman2/quotes/209956077/composite MRK +2.16% and Walt Disney /zigman2/quotes/203410047/composite DIS +0.99% are contributing to the blue-chip gauge's intraday rally, as the Dow /zigman2/quotes/210598065/realtime DJIA +1.09% is trading 73 points (0.3%) higher. Merck's shares have climbed $1.26, or 1.5%, while those of Walt Disney are up $2.05 (1.5%), combining for a roughly 22-point bump for the Dow. Other components contributing significantly to the gain include 3M /zigman2/quotes/205029460/composite MMM +0.69% , Cisco /zigman2/quotes/209509471/composite CSCO +1.56% , and Nike /zigman2/quotes/203439053/composite NKE -0.41% . A $1 move in any one of the 30 components of the index equates to a 6.78-point swing.