ForexFBI,

Welcome to FxStat.

The widget show your compund return and each trade's return is calculated based on your last balance and not you since incptio return. However, it's been requested many times by our members to change the compund based return to different model, therefore next release will allow you to see your return on performance page and widgets based on Time Waighted Return:

Introduction

Achieving comparability among firms’ compliant presentations requires as much uniformity as possible in the methodology used to calculate portfolio and composite returns. The uniformity of the return calculation methodology is dependent on accurate and consistent input data, a critical component to compliance with the GIPS® standards.

Although the GIPS standards allow flexibility in return calculation, the return must be calculated using a methodology that incorporates the time-weighted rate of return concept for all portfolios except for private equity. For information on calculating performance for private equity, see the private equity provisions and guidance. The GIPS standards require a time-weighted rate of return because it removes the effects of external cash flows, which are generally client-driven. Therefore, a time-weighted rate of return best reflects the firm’s ability to manage the portfolios according to a specified mandate, objective, or strategy, and is the basis for the comparability of composite returns among firms on a global basis. In this Guidance Statement, the term “return” is used, rather than the more common term “performance,” to emphasize the distinction between return and risk and to encourage the 

for more inforamtion please read the following file.

http://www.gipsstandards.org/standards/guidance/develop/pdf/gs_calculation_methodology_clean.pdf