I want to know the best/most popular website to track trading performance. I have been a member of Covestor.com (profile name NateBZ) since 12-1-08 and do not like how it calculates returns. If I make a 5% profit in a single trade with 50% of my portfolio, Covestor will show my portfolio return for the day at 5% when in reality it's only 2.5%. Any suggestions and advise would be wonderful.