By MarketWatch Automation
Shares of American Express and Boeing are trading lower Monday morning, sending the Dow Jones Industrial Average into a slump. Shares of American Express /zigman2/quotes/203805826/composite AXP +3.12% and Boeing /zigman2/quotes/208579720/composite BA +5.97% are contributing to the blue-chip gauge's intraday decline, as the Dow /zigman2/quotes/210598065/realtime DJIA +1.12% was most recently trading 668 points, or 2.4%, lower. American Express's shares are down $3.99, or 4.0%, while those of Boeing have fallen $6.11, or 3.6%, combining for an approximately 66-point drag on the Dow. Other components contributing significantly to the decline include Intel /zigman2/quotes/203649727/composite INTC +1.48% , Salesforce.com Inc. /zigman2/quotes/200515854/composite CRM -0.16% , and Honeywell International Inc. /zigman2/quotes/205583690/composite HON +1.28% . A $1 move in any of the benchmark's 30 components results in a 6.58-point swing.