I'm putting it down to manipulation, that's my opinion.  The BTD news sent the PPS up over $1.50....that's when I believe short selling was employed to squelch the rally.  In fact I suspect that more than 30 odd thousand were borrowed and dumped back into the market, but in the ensuing days my belief is that those who shorted have been slowly nibbling away.....

I'm starting to nibble myself, picked up some more shares and some $2.05 warrants....both orders filled but I'm guessing the Warrants went through secondary/darkpool trading.