U.S. stocks rose sharply Wednesday. The Dow Jones industrial average rose 434.90, or 1.8 percent, to 25,014.86. The broader Standard & Poor's 500 index rose 41.05, or 1.55 percent, to 2,681.05. The technology-heavy Nasdaq composite index rose 154.79, or 2.2 percent, to 7,183.08.