The principle of stock index futures speculation is that when investors expect the stock index to rise, they will buy at a low price and open positions, and then sell at a high price after the stock index rises. When the stock index is expected to fall, sell at a high price first, and then buy at a low price after the stock index falls.

Stock index futures provide high-risk opportunities. A simple speculation strategy is to use stock index futures to predict market trends in order to obtain profits. If the market price is expected to rebound, investors will buy futures contracts and expect the futures contract price to rise. Compared with investing in stocks, its low transaction cost and high leverage ratio make stock index futures more attractive to investors.