The Dow Jones Industrial Average is slumping Friday afternoon with shares of Boeing and Chevron delivering the stiffest headwinds for the blue-chip average. The Dow /zigman2/quotes/210598065/realtime DJIA +0.41% was most recently trading 473 points (2.1%) lower, as shares of Boeing /zigman2/quotes/208579720/composite BA +1.91% and Chevron /zigman2/quotes/205871374/composite CVX +1.47% have contributed to the index's intraday decline. Boeing's shares have fallen $16.84 (9.3%) while those of Chevron are off $5.67 (7.4%), combining for an approximately 153-point drag on the Dow. Also contributing significantly to the decline are Walt Disney /zigman2/quotes/203410047/composite DIS +1.40% , JPMorgan Chase /zigman2/quotes/205971034/composite JPM -0.84% , and Exxon Mobil /zigman2/quotes/204455864/composite XOM +2.92% . A $1 move in any of the index's 30 components results in a 6.78-point swing.