According to the closing price of the previous day and the stock market forecast of that day, futures call auction accepts the trading declaration within the specified time and buys it at one time.

Call auction is the day when there is no clinch a deal price. Investors who want to enter the market can enter the stock price according to the closing price of the previous day and the forecast of the stock market that day. For the orders entered into the computer, the transaction volume of each price is calculated according to the principle of price priority and time priority. Finally, the transaction price of call auction is the price with the largest transaction volume. The transaction price in call auction is the opening price of the stock. This process is called call auction.