Futures is to sign a long-term contract with others to buy and sell goods (or stock index, foreign exchange, interest rate) in order to achieve the purpose of maintaining value or making money.

Futures can make profits by shorting, such as:

When the stock index reaches 4000 points, it is estimated that the stock index will fall. You signed a (primary) contract with the buyer in the futures market. (For example, you agree to sell him 300 stock indexes (stocks) at any time within six months, each of which costs 4,000 yuan. (The contract amount is 4000× 300 =1.2000 yuan, according to 65438.

Why should a buyer sign a contract with you? Because he's awesome.

There was no stock index (stock) when you signed the contract. You are observing the market. If the market drops to 3,600 points as you wish (maybe 2-3 days), you can buy 300 stock indexes at 3,600 yuan each and sell them to buyers at 4,000 yuan each. After the performance of the contract (your performance bond will be returned to you), you will get:

(4000-3600)×300= 12 (ten thousand yuan) (the handling fee is ignored)

In practice, you only need to sell a stock index at 4000 points and buy it at 3600 points, which is very convenient.

Since the margin of futures is generally 10% of the value of futures contracts, your margin may double or lose money every time the futures (stock index) rises or falls by 10%.

Therefore, if you are short, if the stock index goes up, you will lose money and you will earn more. So in the later stage of the TV series, Ding Jia shorted, the stock index rose, Ding Jia went bankrupt, the whole family jumped off the building, and how much money Zhanbo Fang made.