Perhaps lots of shorts covered. That would give the rest of us a chance to do so instead getting, "no shares available for borrowing". People who sell naked puts--like me-- like to be able to sell short to cover their options when the underlying stock falls too low.
Absolutely...I sold this days too soon never expected this but when the momentum guys get in it can last for awhile. This stock will go up in the pre-market soon and early in the regular session then collapse. That's the way these momentum runs end.