Zero out Mutual Fund gains/losses when the market reopens
I use Yahoo Finance to track my portfolios across several different financial institutions. Wonderful way to keep all the data in one place. That said, the portfolios include Mutual Funds who have posted their prices after market close. When the market reopens the following day the gains/losses are still reflected in the mutual fund price from the previous day. These should be zeroed out and thus the figures will reflect the gains/losses for open equities. F ollowing market close the new mutual fund prices will be posted and the portfolio will then portray an accurate figure or portfolio performance for the day. Currently the inclusion of the previous day's information for mutual funds provide inaccurate data.

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David Hill commented
This is an important correction / update. Without it, the "day change" is inaccurate and useless.