Re: short interests in a stock am no expert, but in a rapidly uptrending market buy orders can overwhelm shares available for sale. Market makers routinely sell shares short (shares they don't own) to make an orderly market. When the opportunity arises after the buying wave subsides, they "walk" the stock price down, buy the bids till they disappear and the bid drops, more buying (covering) leading to more selling by the "stuckholders" who bought in higher and now are getting stopped out according to the "first loss is best loss" theory.