stoxjock, just the trading days, you're right... ...about the days of the week in the first and second columns (my ooops on XL dragging the row). ...here are the corrected dates (names and dates). ...thanks for pointing that out. http://investorshub.advfn.com/uimage/uploads/2016/11/27/isfzi20-VWAP_Go_Forward_Corrected.PNG