NEW YORK, May 9 (Xinhua) -- U.S.-listed Chinese companies traded lower on Monday 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 XPeng and Bilibili dropped 10.05 percent and 9.83 percent, respectively, leading the losses in the top 10 stocks in the index.

       Shares of NIO and BeiGene sank 9.18 percent and 8.87 percent, respectively, also among the worst performers in the top 10 stocks.

       U.S. stocks fell noticeably on Monday as investors continued to dump risk assets.

       The Dow Jones Industrial Average dropped 653.67 points, or 1.99 percent, to 32,245.70. The S&P 500 lost 132.10 points, or 3.20 percent, to 3,991.24. The Nasdaq Composite Index decreased 521.41 points, or 4.29 percent, to 11,623.25.

       The Cboe Volatility Index, widely considered as the best fear gauge in the stock market, surged 15.1 percent to 34.75.

       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 2,192.44, marking a 6.86-percent slide for the month-to-date returns and a 26.39-percent loss for the year-to-date returns.