Stock index futures-standardized futures contracts based on a certain stock index. Buyers and sellers trade the stock index price level after a certain period of time. After the contract expires, the stock index futures will be delivered in the form of cash settlement. Most market analysts believe that once stock index futures are launched, investors with different risk preferences can choose appropriate strategies to trade stock index futures according to the situation.

Margin trading-also known as "securities credit trading", includes four types: securities companies' margin trading with investors and financial institutions' margin trading with brokers. The "margin financing and securities lending" in the market usually refers to the business that securities companies provide margin financing and securities lending transactions for investors, and securities companies lend funds to customers for them to buy securities or issue securities for them to sell securities.

Financing refers to borrowing money to buy securities. Securities companies lend money to customers to buy securities, and customers repay the principal and interest at maturity. Customers buying securities from securities companies are called "short selling". Securities lending is to borrow securities to sell and then return them as securities. Securities companies lend securities to customers for sale, and customers return the same kind and quantity of securities at maturity and pay interest. Customers selling securities to securities companies are called "short selling".