Settlement price: the settlement price of the day refers to the weighted average price of the transaction price in the last hour of a futures contract according to the volume.
No transaction in the last hour/the transaction price in the previous hour is the weighted average price of the transaction volume as the settlement price of the day. If there is still no deal during this period, push it forward for another hour. And so on. If the trading time is less than one hour, the weighted average price of the whole period shall be taken as the settlement price of the day.
If there is no transaction price on that day, the settlement price of the contract on that day is: contract settlement price = settlement price on the previous trading day of the contract+settlement price on the previous trading day of the benchmark contract-settlement price on the previous trading day of the benchmark contract, where the benchmark contract is the contract with the closest delivery month on that day.
If the contract is a new listed contract, the calculation formula of the settlement price of the day is: contract settlement price = contract benchmark price+benchmark contract settlement price today-benchmark contract settlement price on the previous trading day.