To put it bluntly, shorting futures is to be a seller in the contract and want to complete the trading behavior of selling high and buying low.
Take soybean meal as an example, let's make a simulated transaction of short futures. The flow of this transaction is like this. You agree to a contract first (no matter who you sign the contract with). The price agreed in this contract is 3800 yuan/ton (you are the seller), and the contract has a term, such as six months.
In these six months, if the price of soybean meal drops to 3,500 yuan/ton, and if you are the seller in the contract, it has been stipulated in your contract that you can perform this contract at the price of 3,800 yuan/ton at any time in these six months, then you can buy soybean meal or contract in the market at the price of 3,500 yuan/ton and sell it to the buyer in the contract, so that you can complete a short transaction.
Empty speculation in the futures market is generally that the seller sees that the price of futures products will fall and sells them at a high price in the contract. If the price falls, he can sell at a high price and buy at a low price to make a profit.
In the futures market, the speculative manipulation of the empty side is generally based on the principle that all forces are mobilized to push up the price of a futures product, resulting in a false situation that the futures product is about to rise, and then high-priced contracts are signed with many parties to attract the king into the urn, and the empty side begins to smash the market, and the futures price plummets, thus making profits.