Extended information ic is usually represented by IC, in which "I" stands for stock index futures (stock index futures), "C" is the initials of China, and the subject matter is CSI 500 stock index futures, which is one of the three major stock index futures in China and is subject to T+0 trading. The other two stock index futures are introduced as follows:

IH stands for SSE 50 Index Futures.

IF stands for Shanghai and Shenzhen 300 stock index futures.

In addition, the English abbreviation of stock index futures is SPIF, which is the full name of stock price index futures, and can also be called stock price index futures and futures index. It refers to the standardized futures contract with the stock price index as the subject matter. Both parties agree that at a future date, they can buy and sell the underlying index according to the size of the stock price index determined in advance, and settle the difference in cash after the expiration. Therefore, CSI 500 stock index futures are futures with the stock index of CSI 500 as the subject matter.