1. The profit or loss on a completed trade. This means a position has been initiated and then closed. It also includes any and all fees and commissions associated with the transaction.
  2. In the Market Value – Real FX Position section of the TWS Account Window, this is your profit on closed positions, which is the difference between your entry execution cost and exit execution cost, or (execution price + commissions to open the position) – (execution price + commissions to close the position).
  3. In the FX Portfolio – Virtual FX Position section of the TWS Account Window, this is the realized profit and loss for the pair.