I got the same answer from CMEG! $650 in the first 5 days! (WTF!) . Most of my losses are from commission and opportunity loss since they rarely have stocks available to short these days.
Today CCL short is a perfect setup and gave so many short opportunities that I could have made money even the third breakdown at $10.5 breakdown, they never have share short available. I tried to short CCL, AAL since they were in play, CMEG never have shares to short available. Even today with AMD! when it broke $44.2-$44 level, no shares to short for AMD!
I'm really concern now if the market keep going down and CMEG doesn't have stocks available to short, but commission is still not cheap.