NEW YORK, May 31 (Xinhua) -- U.S.-listed Chinese companies traded mostly higher on Tuesday with nine of the top 10 stocks by weight in the S&P U.S. Listed China 50 index ending the day on an upbeat note.

       Shares of Bilibili and Yum China Holdings climbed 5.18 percent and 5.16 percent, respectively, leading the gainers in the top 10 stocks in the index.

       Shares of NetEase slipped 0.26 percent, the lone decliner in the top 10 stocks.

       Wall Street's major averages dropped on Tuesday, dragged by weakness in energy and materials stocks.

       The Dow Jones Industrial Average fell 222.84 points, or 0.67 percent, to 32,990.12. The S&P 500 decreased 26.09 points, or 0.63 percent, to 4,132.15. The Nasdaq Composite Index lost 49.74 points, or 0.41 percent, to 12,081.39.

       The Cboe Volatility Index, widely considered as the best fear gauge in the stock market, rose 1.83 percent to 26.19.

       U.S. financial markets were closed on Monday in observance of the Memorial Day.

       As of Friday, the S&P U.S. Listed China 50 index, which is designed to track the performance of the 50 largest Chinese companies listed on U.S. exchanges by total market cap, stood at 2,390.13, marking a 1.53-percent gain for the month-to-date returns and a 19.75-percent loss for the year-to-date returns.