The closing price on November 26, 2008 for Vanguard money market fund VMMXX has a serious error from the Quicken site. It shows the price as $2.64 with a loss of $1.64 for the day. This is VERY wrong since the price is fixed at $1.00.
I think they mixed up the 30 day yield (which is 2.63%) somehow with the price. I checked again this morning and the price is back to $1.00, but yesterday's price hasn't been fixed. This causes a huge fluctuation in my portfolio value.
I sent them an email about it, but I don't have much faith in their fixing it.
Barry