Since the 16/2/2020 release, the return on equity calculations are live. CopyTrader Pro gives you two different RoE calculations at all times: your equity in USD and your equity in BTC.
RoE calculations are based on a snapshot taken of your connected balances every 6 hours. We call this time between those 6 hours periods.
The formula is the following for any given period:
ROE = (E1-E0+W-D) / (E0+max(D-W))
E0 - your balance at the start of the period
E1 - your balance at the end of the period
W - withdrawals during the period
D - deposits during the period
max(D-W) - maximum positive difference caused by withdrawals and deposits on your balance during the given period