Stock index futures refer to derivative instruments that trade with an index as the subject matter. Different from stocks, stock index futures is a trading method of buying first and then selling or selling first and then buying. Short stock index futures, that is, short selling stock index futures contracts to earn the difference. As the price of stock index futures fluctuates greatly, short positions can effectively control risks.

Stock index futures can be traded in two ways. The first is to buy stock index futures contracts directly, and then hold them in short positions to earn the difference. Another way is to trade through futures options. Option is an option, that is, the right of the trading party to choose whether to exercise its rights at a specific time in the future. Holding options can effectively control the investment risk of stock index futures.

Short selling of stock index futures is a high-risk and high-yield investment method. Short positions can effectively control investment risks, but at the same time they also bear greater risks. Before trading stock index futures, investors need to understand market risks, trading rules and trading strategies. At the same time, investors also need to choose appropriate futures contracts and trading opportunities to ensure the maximization of investment returns.