It's not just about buying because, IMO, any buying will give opportunity for folks to sell and get out. So, it has to be buying with some kind of significant foward looking news that will hold off any significant sell off. There will always be sellers and traders, however, for the price to really move, there has to be some reason to make folks greedy enough to hold on for more.
Of course, there is always the $0.12 overhang from the EESV deal. ANY share price above that and EESV can arbitrage their shares to generate some quick cash. It's hard to trust a company with no cash, no leadership, and no future. From a purely business perspective, I can't understand why CVIA even considered to deal with them, unless there was some back door deal involved.
But to answer your real question, I'd say at least a few weeks worth of 1/4M+ days (~5M total shares).
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