It could effect PYCT as well as all other securities in the market. I believe that PYCT has been the victim of NSS (or selling of so called "Phantom Shares").
If this is the case (and we can suspect), the squeeze could really raise the pps in a hurry.
Naked short selling involves selling without first borrowing stock (or even locating stock to borrow). If a naked short seller does not borrow the stock he sells, he will be unable to deliver that stock to the buyer to settle the trade. Intentional naked short selling is illegal, though market makers are currently allowed to naked short temporarily when engaged in bona fide market making. (Even market maker ftds, how ever, are illegal when delivery failure exceeds 13 days.)