Stock index futures refer to futures with "stock index" as the basic financial variable. Make money by the rise and fall of stock indexes. The key is that you should predict accurately. For example, if you predict that the stock index will rise by 100 after one month, you can buy the corresponding futures contract. If it really goes up, you can earn100 *100 =10000 yuan. Of course, 100 here is my hypothesis, or it may not be. Otherwise, you will lose money. The key is that you should predict accurately, which is risk.

Regarding margin financing and securities lending, it is said separately. Financing means that you borrow money from a securities company to buy shares, and then sell the shares to pay back the money, so that you can earn the difference.

Securities lending means that you borrow one or a package of stocks from a securities company, then sell them, buy the same stocks and return them to others.

The key is accurate judgment. Of course, you can't just do it. You need to rely on your credit to make a certain deposit before you can carry out margin financing and securities lending, and margin financing and securities lending have a certain range of stocks, usually "good" stocks such as blue chips.

I hope you can understand. You can ask again if you don't understand.