Come on Sherlock. If you read the thread, it is clear that none of the problems I describe have anything to do with the market being closed on Friday. Do you have the Dashboard tab, and have investments? If so, do you see the correct values for overall percent changed? Do the individual percentages match those on the portfolio tab? Do you show ".00" for the change amount?
So I stand by the formula I listed. I will grant you that "yesterday's value" description should be the previous market day's price.