The Dow Jones Industrial Average is trading up Friday afternoon with shares of UnitedHealth and Pfizer seeing positive gains for the price-weighted average. The Dow (DOW:DJIA) is trading 177 points (0.6%) higher, as shares of UnitedHealth (NYS:UNH) and Pfizer (NYS:PFE) have contributed around a quarter of the blue-chip gauge's intraday rally. UnitedHealth's shares are up $10.31 (4.0%) while those of Pfizer have risen $0.84, or 2.3%, combining for a roughly 76-point boost for the Dow. Dow Inc. (NYS:DOW) , Nike (NYS:NKE) , and Johnson & Johnson (NYS:JNJ) are also contributing significantly to the gain. A $1 move in any of the benchmark's 30 components results in a 6.78-point swing.