U.S. stocks close mixed

NEW YORK, May 15 (Xinhua) -- U.S. stocks ended mixed on Thursday.

The Dow Jones Industrial Average rose 271.69 points, or 0.65 percent, to 42,322.75. The S&P 500 added 24.35 points, or 0.41 percent, to 5,916.93. The Nasdaq Composite Index shed 34.49 points, or 0.18 percent, to 19,112.32.