The first hand in the futures market refers to the smallest trading unit of a contract, and different contracts have different first hand sizes. How much the first-hand cost is reduced depends on the cost structure of the trader, including handling fee, margin and transaction cost.

Usually, the cost structure of futures trading includes two parts: transaction fee and margin. The transaction fee is usually calculated on the basis of the contract value, and the transaction fee per lot is equal to the contract value multiplied by the transaction rate. Margin is a certain amount that investors deposit in futures companies to ensure the safety of trading, and its size is related to the number of trading lots and the contract value.

If adding a hand can reduce transaction fees and costs, then the specific amount of cost savings needs to be calculated according to different contracts and the specific situation of investors.