End of Day (Mark-to-Market)

Traders account for their positions in two ways: accrual or mark-to-market. An accrual system accounts only for cash flows when they occur; hence, it only shows a profit or loss when realized. The mark-to-market method values the trader’s book at the end of each working day, using the closing market rates or revaluation rates. Any profit or loss is booked and the trader will start the next day with a net position.