I lost 200. The daily mark-to-market profit and loss refers to the profit and loss of future positions corresponding to the settlement price of the previous trading day. Futures settlement system is "daily debt-free settlement system", also known as "daily mark-to-market system". According to the Southern Fortune Network, marking profit and loss to the market is one of the concepts of futures settlement. That is, after the end of each trading day, all customers' positions are settled according to the settlement price, which is included in the profit and set aside the loss. So the loss of 200 is deducted from the market value gain and loss. Day-to-day mark-to-market profit and loss for opening positions on that day = difference between opening price and settlement price on that day x lots x trading units.