There is a form of gap, called a "lap", that exists between the .0013 close on 4/25 and the low of .0015 on 4/28.
So as not to get anyone up in arms and for those not technically oriented who want clarity, a "gap" occurs when the price opens outside of the trading range of the previous day. A "lap" occurs when the price opens within the previous day's trading range, but above or below the previous day's close.
Since the lap on BLDV is such a narrow one I doubt that it has much significance, if any, other than it could be an area of support to keep an eye on if the stock does retrace that far.
Sorry I don't have a chart to post but I don't subscribe to stockcharts.com and eSignal doesn't allow me to post my own charts publically.
Rich