Looks like many new shorts started to short the close and are now getting burned afterhours
It's very easy to tell when some of the shorts have started their positions. Unfortunately, this is NOT the time to open a short position. There will be many short-bagholders on this one come Wednesday morning.
As the buying continues the pressure will be felt by anyone holding a short-sold position. I understand the gamble but it's not a good time with this intense amount of momentum. I expect high $2's on this momentum alone. Anyone still short today will probably lose a substantial amount by tomorrow. Good luck anyway!