Shares traded so far today is over 47 million. Short interest was only slightly over 2 million. I have no idea when we'll see heavy profit taking, but, this move is more than just short covering.
In Reply to 'nokomis' a lot of this was covering. RIGL will be short target tomorrow plus results were less than originally thought. Traders sell the news. IT"S a mo-mo play today. In and out for many traders. Enjoy!