Stocks plunged this morning, giving back a big chunk of last week’s big rally. The Dow dropped 350 points, while the S&P and Nasdaq gave up 41 and 65 points respectively. “Investors are saying in these turbulent times it is best to take what comes your way,” said one strategist. A number of economic indicators are expected this week, including a big nonfarm payroll report Friday, and few expect good news. (More stock market stories.)