One of the simplest ways is to control the investment amount within 50% of the total funds, and the single market investment funds such as stock index futures investment should be controlled at about 5% of the total assets, because the risk is relatively high. Therefore, investors in stock index futures should generally have knowledge of both stocks and futures. If investors have the following characteristics, they can consider investing in stock index futures: 1, risk-averse stock investors. After buying a stock, I am worried that the market decline will drag down my shareholding, and I am worried that there will be no previous advantageous entry point after selling. Then shorting stock index futures while holding stocks can hedge the systemic risk of market decline, mainly institutional investors. 2. Commodity futures investors. Generally, investors who have certain trading experience in commodity futures also have certain advantages in investing in stock index futures. They are used to two-way futures trading and margin system, and have rich experience in fund management and trading strategy, which is suitable for stock index futures speculation. 3. Aggressive speculators who dare to take risks. For example, investors who dare to participate in the speculation of put warrants are more suitable for the trading of stock index futures, but the premise is that the risk of stock index futures may be higher than that of warrants, and investors bear their own risks. 4. Shareholders who are not good at stock selection. Some investors judge the market ups and downs accurately, but they can't always grasp the stock selection. There are not a few such investors. If they invest in stock index futures, their record should be better than investing in a single stock.