Traders work at the New York Stock Exchange in New York, the United States, on Dec. 13, 2019. U.S. stocks ended higher on Friday as investors digested updates about U.S.-China trade and a slew of economic data. The Dow Jones Industrial Average rose 3.33 points, or 0.01 percent, to 28,135.38. The S&P 500 rose 0.23 points, or 0.01 percent, to 3,168.80. The Nasdaq Composite Index was up 17.56 points, or 0.20 percent, to 8,734.88. (Xinhua/Wang Ying)