Stock index futures are of great significance, and the introduction of short selling mechanism can reduce the fluctuation range of the underlying stock index.

For example, if it rises too fast, someone can sell the contract, and if it really falls in the future, he can make money.

This will not lead to rising too fast, rising too fast, and it will often be miserable when it falls.

For example, if there is a big drop, some people are optimistic that it will go up in the future. He can buy a contract and it will really go up in the future.

He can make money.

Provide a hedging mechanism, for example, if someone has a large number of stocks but can't sell them at once, he can sell the contract, and even if the stock falls, he can earn back from the futures.

But in the long run, stock index futures will not affect the operation of the stock index, but a stable use.