This page ranks traders according to their return on investment (ROI).

ROI is the ratio of earnings to amount deposited over the lifetime of your account. For example, if you put in $10, did some trading and got your net worth to $15, then your earnings are $5 and your ROI is +50%.

ROI is calculated as follows:
(Current Net Worth + Total Cash Withdrawn) / (Total Cash Deposited) - 1