Stock index futures is a high-risk derivative transaction. Its price fluctuates greatly, which is easy to cause losses to investors. Short position means that the margin in the investor's account is lower than the maintenance margin required by the futures company, which leads to the forced liquidation of the futures contract held by the futures company. The short position of stock index futures occurs when the margin ratio is below a certain level.

The outbreak of stock index futures will bring great financial pressure to investors. Once there is a short position, investors must raise funds within a certain period of time to replenish the deposit in the account. Otherwise, its account will be banned and no more transactions can be made. If the investor fails to replenish the margin in time, the futures contract held in his account will be locked up, causing greater losses.

In order to avoid short positions in stock index futures, investors should develop strict trading habits. First of all, we must strictly control the margin ratio to ensure that the transaction is within a safe level. Secondly, it is necessary to establish a scientific stop-loss strategy, judge the market trend in time, make a trading plan and strictly implement it. Finally, investors should be familiar with the rules and operational procedures of the futures market, be cautious, and don't blindly follow suit to avoid large-scale losses.