When you say "sell", you mean "liquidate" the contract. It should be noted that futures can be bought or sold first, and then the opposite action is needed to hedge and position the contract in your hand. In futures, this is called liquidation, not just selling.

It was 100 when you bought it. At this time, there must be one person, that is, your opponent, who made a deal at the price of 100 yuan, otherwise the deal could not be made. When the contract price reaches 200, you "sell" the contract in your hand. At this time, someone must buy it at the price of 200 yuan, otherwise the transaction cannot be completed.

For you, the gross profit of completing a transaction is 100. You don't need to worry, and you don't need to know who gave you money. The transaction settlement center will directly transfer 100 yuan to your account. Just like buying food in the market, you don't have to consider the name of the seller. For those who sell vegetables, there is no need to consider who bought them. In the market, people can buy or sell, just considering the market trend. If you feel that you want to go up, buy it, and then sell it when the equivalent is high; If it is judged that it will fall, sell it, buy it if it falls, clear the position and leave the profit.

Considering our company, it is necessary for beginners to learn the relevant knowledge and strategies of futures investment, and it can also be used for reference for veterans.