If you think the futures price will go up, go long (buy and open positions), go up (sell) and close positions, and earn: price difference = close positions-open positions;
If you think the futures price will fall, short (sell the position), fall (buy) and close the position, and earn: price difference = opening price-closing price.
It is generally easy to understand how long futures are, but it is not easy to understand how short futures are. Let's take shorting stock index futures as an example to explain the principle of profiting from buying falling futures:
The profit from the decline in buying is as follows: If you expect the stock index futures to fall by 3,000 points, you can sign a selling and opening contract with others, stipulating that you can sell him the first-hand stock index at the price of 3,000 points (the value of the first-hand stock index contract is 3,000× 300 = 900,000 yuan), and you pay about 15% to the exchange (futures company) as the margin rate.
If you buy a position when the stock index drops to 2,500 points (equivalent to buying goods at 2,500 points in the market and giving them to the buyer at 3,000 points), you will gain a profit in the first hand: (3,000-2,500) × 300 =1.5 million yuan (excluding the handling fee). )。 The deposit will be refunded to you.