Realised P&L is the close-out positions' realised p&l under current holding period.
Realised P&L=∑(closed Price-cost)*closed qty
*Under the FIFO cost algorithm, the fee for position-opening fee is not calculated for the realised P&L; but it is calculated under the average cost algorithm
Total Realised P&L of account = the sum of Realised P&L of all the positions
Reminder: this formula is for reference only, please refer to the actual assets.