Short Interest Probably Related to Options Being ExercisedWhat sometime happens is the broker short sells the stock on behlf of their clients (the option holder), sends the option agreement and the required cash to the trust agent and the trust agent sends the shares over to the broker thus covering the short position. It all happens fairly fast (4 or 5 days) so no need to worry about a borrow or a potential buy-in. There is a chance that it is a short bet on PHO but unlikely given the fundementals. Also, with the management/director shake-up the options being exercised makes sense.