I have asked on the Zulutrade forum about the bizarre ROI values some weeks ago. They refused to reveal the ROI formula they are using, but admitted that there seems indeed something wrong and they are working on it. So far it has not been fixed.
However you can estimate the real ROI from the equity curves. ROI is roughly equivalent to the gross profit divided by the maximum drawdown of the curve, then divided by the number of years. You can see that the real ROIs of the 55 surviving accounts are mostly in the 10%..30% range, some are even negative.
The equity curves are more trustworthy than the displayed ROI figures. At least I hope so.
hehehe you kidding right?
im sorry you cant estimate Return on Investment - annualized ? there is nothing hidden about this formula... return/invested capital * 100 = ROI %
which forum thread you are talking about, post the link for all of us to see