There are a few wildcards that I see that could affect the b/o price in the near term. Most notably, mN could be a game changer if it wildly spectacular. Some '113 good news, maybe by mid-year. Outside chance that Pona has some unexpected good news, but I can't think of what that might be.
So I think $12 would be bottom, but likely it is higher, the top could be $20 or $20+ depending on the wildcards.
If HB sells another asset/more stock, all bets are off. Long road.
I find it curious no one comments on the Ariad R&D spending pullback. I mean, for all the hoopla on ASH and comments about Pona being 'the bomb', you'd think Ariad would focus all its resources there. More like Pona 'bombed', at least so far. '113 should pass Pona rev's in short order, whenever it gets approved, and for whoever owns it.