U.S. stocks traded sharply higher Monday. The Dow Jones industrial average rose 459.67, or 1.8 percent, to 26,287.03. The broader Standard & Poor's 500 index rose 49.71, or 1.6 percent, to 3,179.72. The technology-heavy Nasdaq composite index rose 226.02, or 2.2 percent, to 10,433.65, a new record high.