NEW YORK, April 2 (Xinhua) -- U.S.-listed Chinese companies traded mostly lower on Wednesday, 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, amid a heavy sell-off in U.S. equities.

Shares of Sina Corp. and shares of Yum China Holdings, Inc., tumbled 4.59 percent and 4.51 percent respectively, leading the laggards in the top 10 stocks of the index.

Shares of Alibaba and shares of JD.com, another two Chinese famous e-commerce giants listed in the U.S. equity market, dropped 3.23 percent and 3.48 percent respectively on Monday.

U.S. stocks ended sharply lower on Monday, as worries about trade tensions and a sharp decline in tech shares weighed on investor sentiment.

At the close, the Dow Jones Industrial Average dropped 458.92 points, or 1.90 percent, to 23,644.19. The S&P 500 decreased 58.99 points, or 2.23 percent, to 2,581.88. The Nasdaq Composite Index was down 193.33 points, or 2.74 percent, to 6,870.12.

The Cboe Volatility index, widely considered the best fear gauge in the stock market, surged 18.28 percent to 23.62 on Monday.

On Friday, U.S. stock markets were closed for the Good Friday holiday.

As of Thursday, the S&P U.S. Listed China 50 index stood at 3,083.48, marking a 0.24-percent decrease for the year-to-date returns.