Looks like something set a panic into the shorters yesterday as they tried to cover
-
Subject to Potential Buy-ins - A “buy-in” refers to the possibility that TradeKing may call for the return of the shares. This means that you (the borrower) must buy the shares on the open market and return them to TradeKing. If you don’t take action, we will step in and buy the shares for you.
Oftentimes this happens when the stock price is increasing and the original share owner wants to take some profits. This may also happen when there are fears of bankruptcy or in the event of takeovers. Just be aware it’s entirely possible that you’ll get forced into an ill-timed exit against your will.