NEW YORK, June 9 (Xinhua) -- U.S.-listed Chinese companies traded lower on Thursday with all the top 10 stocks by weight in the S&P U.S. Listed China 50 index ending the day on a downbeat note.

       Shares of Bilibili and Pinduoduo tumbled 14.78 percent and 9.62 percent, respectively, leading the losses in the top 10 stocks in the index.

       Shares of Alibaba Group Holding and Yum China Holdings slid 8.13 percent and 8.08 percent, respectively, also among the worst performers in the top 10 stocks.

       U.S. stocks fell sharply on Thursday as tech shares led the broad market lower.

       The Dow Jones Industrial Average plunged 638.11 points, or 1.94 percent, to 32,272.79. The S&P 500 decreased 97.95 points, or 2.38 percent, to 4,017.82. The Nasdaq Composite Index dropped 332.05 points, or 2.75 percent, to 11,754.23.

       The Cboe Volatility Index, widely considered as the best fear gauge in the stock market, surged 8.89 percent to 26.09.

       As of Wednesday, 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 2,821.63, marking a 15.02-percent gain for the month-to-date returns and a 5.27-percent loss for the year-to-date returns.