It's much easier to borrow shares to short on the Nasdaq/NYSE than on OTC penny stocks. AVXL's pps has been brutalized since it moved off the OTC, and it's been a favorite target of shorts and orchestrated attacks from The Street, Motely Fool, etc.. My personal preference is to stay here below the radar until we have a major catalyst that can help protect us against the shorts and their attacks. If you think the little bit of shorting that's going on here is bad, you haven't seen anything yet...