FTSE China's tripling shows that investors have less money, but they predict that the stock market will fall, and then they want to short, so that investors can buy more topics with less money. In the real market, when investors predict the downward trend of the stock market, they will generally make relevant short-selling operations. Investors can sell their chips at the market price, and then wait for the stock price to fall before buying, thus earning the profit of the middle price difference.

There are four major futures exchanges in China, namely Shanghai Futures Exchange, Zhengzhou Commodity Exchange, Dalian Commodity Exchange and China Financial Futures Exchange. Among them, Dalian Commodity Exchange has listed corn, corn starch, japonica rice, soybean 1, soybean 2, soybean meal, soybean oil, coke, coking coal, iron ore, liquefied petroleum gas and other futures varieties.

2. Investing in futures will face great risks, and the loss of principal may occur at any time. It is best to have relevant knowledge before investing. Futures risks usually include forced liquidation risk, delivery risk, brokerage commission risk, liquidity risk and market risk. Finally, you must make good use of your spare money when investing in futures.

3. operating leverage ratio is also called operating leverage coefficient. In enterprise financial management and management accounting, the change rate of profit is equal to the multiple of the change rate of production and sales (or sales revenue), which is called "operating leverage coefficient" or "operating leverage rate". Leverage ratio generally refers to the ratio of total assets to equity capital in the balance sheet. High leverage ratio means that financial institutions can get a higher return on equity during the economic boom, but when the market reverses, they will face the risk of a sharp decline in return. Commercial banks, investment banks and other financial institutions generally adopt leveraged business model. Before the subprime mortgage crisis broke out, the leverage ratio of American commercial banks was generally 10-20 times, and the leverage ratio of investment banks was usually around 30 times.