During boom times, e.g. last spring and last winter some experienced Gunbot users were doubling their accounts in a matter of weeks. I've had the odd 10% day here and there. As Larry says, this will of course not happen every month because it depends on the market, but PT/GB if you know how to use them properly will exponentially grow your account during boom times quicker than you might expect. During the bear periods your entire account will stagnate or not grow of course. Profit Trailer works a bit differently to Gunbot but they are sort of cousins.