Stock index futures are opened first and leveled first, which means that in stock index futures trading, investors can close their positions after opening positions, and then open positions. This trading method can make investors more flexible to deal with market fluctuations, and at the same time, there are more profit opportunities.

First of all, stock index futures are a means of risk control. When investing in stock index futures, investors need to constantly pay attention to market changes and conduct timely trading operations at any time. By adopting the method of "opening first and leveling first", investors can adjust their positions more quickly, reduce investment risks and ensure their safety in market fluctuations.

Secondly, the stock index futures will be opened first, which also gives investors more trading opportunities. In the case of severe market fluctuations, continuous opening operations can enable investors to seize more investment opportunities. At the same time, it can also make investors more flexible in their investment portfolio and make their income more stable.

Finally, stock index futures need investors to have certain trading experience and skills. Investors need to master the knowledge of market trend analysis, technical indicators and trading mentality, so as to better cope with market fluctuations and master the rhythm and opportunity of opening first and leveling first.

In a word, stock index futures are a way of risk control and trading opportunities, which can help investors better cope with market changes and achieve their investment goals. Investors need to keep a rational and cool head and constantly learn and improve their trading skills.