U.S. stocks reversed course from early losses to close higher Thursday, The Dow Jones industrial average rose 337.37, or 1.6 percent, to 23,625.34. The broader Standard & Poor's 500 index rose 32.50, or 1.15 percent, to 2,852.50. The technology-heavy Nasdaq composite index rose 80.55, or 0.9 percent, to 8,943.72.