The only thing I have suspected since the election results is that shorts appear to have lost the selling volume to support their positions. So they have to work really hard to drive the price down, but even then they don't generate the volume they would need to cover in any meaningful way.
Just like Bio got top heavy with frothy longs in 2015, it now feels like it is the short positions in Bio that have gotten crowded. It still remains to see what 2017 brings but it feels like the Bio landscape might be flipping back over. We'll see.
News 
Market Data 
Discover 
