It's because noone wants this stock to reverse split. I'm sure the government is also keeping an eye on it. That's why you haven't seen it yet become de-listed.
The last run when it closed over a buck, the hod in the next session was $2, and the following trading session, it traded as high as $2.76. Is history repeating itself ? ...And is this run going to lead an even higher pps ? Wish I knew a good fortune teller.