The retention period of settlement data of the futures exchange is 20 years, and the retention period of some procedural data, such as password modification, password reset, and records of data replacement by depository banks, shall not be less than 2 years. A lot of data will be generated in the transaction process, so it is necessary to clarify the type of data.

Settlement formula:

Open futures contracts are based on the settlement price of the day as the basis for calculating the profit and loss of the day.

1, the profit and loss of the day can be calculated item by item.

The itemized settlement formula is: profit and loss of the day = profit and loss of liquidation+profit and loss of position.

(1) Ending profit and loss = average historical profit and loss+average current profit and loss.

(2) Position profit and loss = historical position profit and loss+opening profit and loss on the same day

(3) The profit and loss of the day can be integrated into a general formula.

2. Calculation of margin balance

The balance of settlement reserve refers to the settlement reserve of the current day = settlement reserve of the previous trading day+deposit+trading deposit of the previous trading day-trading deposit of the current day+profit and loss of the current day-handling fee, etc.