A traders works on the floor of the New York Stock Exchange.Michael M. Santiago/Getty Stocks fell Thursday, with the S&P 500 moving closer to a bear market. Weekly jobless claims rose by 21,000 to 21,8000, the highest level since January. Oil prices were lower and yields fell. Stocks fell Thursday, adding to steep losses as economic growth concerns were underscored by a rise in weekly jobless, leaving investors to keep watch on S&P 500 as it moved closer to bear market territory.