The full name of stock index futures is stock price index futures, which can also be called stock price index futures and futures index. It refers to futures varieties with stock price index as the subject matter.

Price limit

The price limit system is mainly used to limit the daily maximum price fluctuation of futures contracts. According to the provisions of the price limit board, the trading price fluctuation of futures contracts in a trading day shall not be higher or lower than the price fluctuation range specified by the exchange in advance, and the quotation exceeding this range will be regarded as invalid and cannot be traded. Within a trading day, the price limit of stock index futures is set to 10%.

Generally speaking, the price limit is determined according to the settlement price of the previous trading day of the contract. That is to say, the settlement price of the previous trading day plus the maximum allowable increase constitutes the upper limit of the price increase of the day, which is called the daily limit, while the settlement price of the previous trading day minus the maximum allowable decrease constitutes the lower limit of the price decrease of the day, which is called the daily limit.