I use excel to track stocks and mutual funds using Stocks/Data. Refresh is set to auto with update every 5 minutes. Several cells work, like Ticker, Last Close and last trade time, but I find that none of the data cells with period returns (e.g. YTD, 1 mo., 3 mo., return etc.) are not returning the correct values. I have tried re-opening excel, hard-closing excel in Task Manager and deleting/re-inserting cell value. Any suggestions?