Not sure but I do know that short interest has been high for CYDY for a looooooooooooooong time so I guess that has emboldened shorts to keep riding the train.

I also know that if Nader dropped a PR bombshell with the cost to borrow this high, the pressure upwards would definitely be increased. Obviously none of us know the chances of that happening, but it is piling on risk to those betting against CYDY.