Dragged down by declines for shares of Boeing and Chevron, the Dow Jones Industrial Average is slumping Wednesday afternoon. Shares of Boeing /zigman2/quotes/208579720/composite BA +5.58% and Chevron /zigman2/quotes/205871374/composite CVX +0.82% are contributing to the blue-chip gauge's intraday decline, as the Dow /zigman2/quotes/210598065/realtime DJIA +1.39% was most recently trading 2,037 points, or 9.6%, lower. Boeing's shares are off $33.05, or 26.6%, while those of Chevron are down $14.83 (20.9%), combining for a roughly 325-point drag on the Dow. Other components contributing significantly to the decline include United Technologies , American Express /zigman2/quotes/203805826/composite AXP +2.36% , and Travelers /zigman2/quotes/206313935/composite TRV +1.75% . A $1 move in any of the Dow's 30 components results in a 6.78-point swing.