First of all, to be clear, the "original transaction" you mentioned here certainly refers to opening positions, which can be divided into two types: buying futures contracts and selling futures contracts.

"Buy futures contracts and open positions" is easier to understand. For example, you think that corn futures will rise in the next period of time, so now you buy the 1 hand corn futures contract and prepare to wait for two or three months before selling it after the contract price rises. This transaction is "selling warehouse", which is equivalent to building a warehouse in the futures market, buying 1 hand of corn in it, and then. This is the simplest and complete virtual transaction. In the process, you earn the price increase part of the 1 corn contract.

However, if you don't close your position before the contract expires, the 1 hand corn contract of your virtual warehouse will be converted into the actual warehouse spot of 10 ton corn. Of course, we speculators don't need 10 tons of corn. What we need is to use keen insight to earn the "price difference" before the futures contract expires.

"Selling futures contracts to open positions", on the contrary, if you see corn falling, first sell 1 hand corn futures contracts to open positions, and then buy 1 hand corn contracts to close positions and earn the difference.

However, if the contract expires and you haven't closed your position, because you sold the 1 lot corn contract, the exchange will ask you for 10 ton corn. Of course you didn't. You would be miserable.

The futures market is not so easy to enter, so lz is advised to learn the basics of futures first.

Very popular, I hope you can understand.