U.S. stocks surged more than 2 percent Wednesday. The Dow Jones industrial average rose 545.29, or 2.1 percent, to 26,180.30. The broader Standard & Poor's 500 index rose 58.44, or 2.1 percent, to 2,813.89. The technology-heavy Nasdaq composite index rose 194.79, or 2.6 percent, to 7,570.75.