Motley Fool | Stocks Extend Losses as Oil Prices, Energy Shares Tumble TheStreet.com U.S. stocks moved deeper into negative territory Monday as investors digested a number of corporate earnings reports and oil prices decreased more than 1%. The S&P 500 fell 0.29%, the Dow Jones Industrial Average slipped 0.3%, and the Nasdaq declined ... Midday Update: Stocks Stay Negative as Oil Weighs |