text: Interesting question !
  Maybe the brokerage has to hold "extra" shares to cover this eventuality ?
  Or buy more of them (even though they are falling ?)
  Maybe that why banks with brokerages take such a hit when things go south...
  I am a bit surprised to see that 30% of this stock was (apparently) shorted months ago...
  I never saw it on RoB's (anemic) list of large short positions...
  (Feb/17)
  http://www.theglobeandmail.com/globe-investor/investment-ideas/eye-on-shorts-what-bearish-investors-are-betting-against/article34097461/
  .
  But then since they are too lazy to use "% of float" as a criteria, I guess a company with only 60 Million shares (20 million shorted) flies under the radar...companies like ENB,BNS with ? 800 Million shares would be listed (42 Million shorted)....
  More great in depth coverage....
  .
  How was it still trading at $35 if 30% was shorted is pretty amazing...
  Many mysteries.