Tesla and SolarCity ==  shares being sold short is so high that there aren’t very many left that can be borrowed.

short interest in Tesla ==  $7.4 bil 

borrowing rates on shorts ==    expensive to short ;;now paying fees (4%-9%)

there aren’t many shares left to borrow and that “what is left is going out the door at premium levels”

 borrow fees now stand at 45% to 75% ( almost no SolarCity shares left to borrow as the fees for shorting them have reached 100% or more.)

short sellers paying more than $1 mil/day just to keep their short positions in solarcity  open.(0,01%=1mil/7,4 bil)