Include option to view profit/loss of program over trading period rather than time.

At the moment the total profit/loss of a traders program is shown relative to a specific time period which is independent of you being invested or not. Once you have invested in a program would it be possible to view the profit/loss over that specific trading period OR for the total duration that you have been invested? This would make it much easier to gauge how your invested capital is performing over the trading period.