Wall St ends lower

U.S. stocks closed lower on China's exports slowdown. Dow Jones Industrial Average fell 34.04 points, or 0.2 per cent, to 16,418.68.
S&P 500 fell nearly 1 point to 1,877.17, with industrials and consumer discretionary leading declines; healthcare and energy stocks performed the best in S&P's 10 major sectors.
Nasdaq composite slipped 1.77 point to 4,339.93.