U.S.-listed Chinese companies traded roughly higher on Wednesday, with all 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 Pinduoduo and NetEase soared 12.83 percent and 9.04 percent, respectively, leading the gains in the top 10 stocks in the index.

Shares of JD.com and NIO surged 8.01 percent and 6.23 percent, respectively, also among the best performers.

Wall Street's major averages climbed on Wednesday as investors await the outcome of the U.S. election.

The Dow Jones Industrial Average rose 367.63 points, or 1.34 percent, to finish at 27,847.66. The S&P 500 was up 74.28 points, or 2.20 percent, to 3,443.44. The Nasdaq Composite Index increased 430.21 points, or 3.85 percent, to 11,590.78.

The Cboe Volatility Index, widely considered as the best fear gauge in the stock market, dipped 16.82 percent to 29.57.

As of Tuesday, 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 4,486.11, marking a 1.52-percent increase for the month-to-date returns and a 41.64-percent gain for the year-to-date returns.