I shorted this $1 billion dollar biopharmaceutical company because the daily chart of the RSI was around 80 which means it was over-extended after several days of spiking, today is its most choppiest day since it ran up from the $10 to $15, and there were the huge wall of sellers at $15. So, that was the reason why I shorted this stock. I covered too soon again my goal was to make 5% on the down side but because this is $1 billion dollar company so I got scared LOL.