No, the market index generally refers to the rising index, which is obtained by the weighted average of listed stocks on the Shanghai Stock Exchange. It reflects the changes in the stock price of the Shanghai Stock Exchange, and can neither buy up nor buy down.

At present, both stock index futures and options can buy up and down, but the underlying index of stock index futures is the Shanghai and Shenzhen 300 Index, and the underlying index of options is the 50 Index.