U.S.-listed Chinese companies traded lower on Wednesday, with all top 10 stocks by weight in the S&P U.S. Listed China 50 index ending the day on an downbeat note.

Shares of Chinese technology company Sina lost 4.39 percent, the biggest laggard among the 10 stocks.

Meanwhile, shares of Chinese e-commerce giants Alibaba and JD.com lost 1.60 and 1.72 percent, respectively.

As of Tuesday, the S&P U.S. Listed China 50 index stood at 3,065.59, marking a 5.65-percent decline for the month-to-date returns and a 0.82-percent decline for the year-to-date returns.

U.S. stocks ended lower on Wednesday after volatile trading, as Wall Street digested a batch of economic reports.

At the close, the Dow Jones Industrial Average was down 9.29 points, or 0.04 percent, to 23,848.42. The S&P 500 fell 7.62 points, or 0.29 percent, to 2,605.00. The Nasdaq Composite Index was down 59.58 points, or 0.85 percent, to 6,949.23.