140% of stock /issuance/, not outstanding. Shorting stock creates new stock. Once all shorts are closed, the 100% of issuance is still outstanding and someone's holding it. Not everyone can get out!
That doesn't mean the same people. Gamestop does have a long term plan. If it works out the company can be worth money. Buying Gamestop for $2 at the bottom in a few months might be a reasonable risk for the final person holding the bag.
bluGill|5 years ago