some off us older traders have seen this before IE QCOM JDSU AMZN pre split , these stocks will stay and go higher longer than any rational thinking ,so itis best to short weak stocks not the strongest . If you have to short this stock wait until it becomes weak or you see blow off top .trade it from short side only after blow off top .it can gap ,pullback and then reverse extreme so be careful shorting it from open!!!!!
JDSU never got above $200. QCOM was about $800 and they gapped up $80 the day they announced a split. It was all downhill from there. I've been trading since '96, I could tell you stuff that would make your head spin.