If you use purchase on next days open, VV 7 will still buy the stock, even if there is no volume. I tried vol > 0, but that doesn't work on the next days' open purchase. In this search, I preferred not to use a 50 day average amount of volume. Example, GLBZ on 12/23/10. I think VV 7 needs to have a default setting built in, to not buy when there is no volume.