Nobody tries to hold a stock back. It's just when you have a large supply of shares that you need to sell, you have to take advantage of the volume as it comes. That's just how it's prudently done. The trick is to not totally kill the rally, and hope that large volume comes in continually. Aspire will look at it more from an average share price received for a large block over weeks time.
IMO, we'll need several million share volume days in a row to truly break out of this long range.