These six Dow components are set to report quarterly results this week. Investor reaction to these reports could decide whether or not the weekly chart for the Dow 30 shifts to negative or not. American Express reports quarterly results after the closing bell on Wednesday and analysts expect the company to earn $1.38 per share. The stock is down 7.5% year to date and is below its 50-day and 200-day simple moving averages at $91.43 and $89.89, ...