Ann: Anson Reports Major Resource Upgrade at Paradox, page-59

That's not how it works. A gap is created when it opens above the closing price or below. You wouldn't sacrifice shares to create an up gap. If anything traders would profit from it and re-enter lower. Also note. Not all gaps close, so if this is a strategy people are using it's risky. But, generally 90% of the time the gap will close.

Brokers don't get paid their brokerage on un filled orders, so they usually push for gaps to close. Holders like us don't hold enough shares to do this generally. Let me know if you need any more info - Happy to help