It looks like Vanguard has accumulated a pretty big chunk of ALKS. I don't know why the stock has been weak the last day or two, but I like the idea that funds appear to be moving in. Check out the document on ALKS"S website for yourself. IMHO.
Yup this winter will be the last chance to buy below 21. Anybody who sells down here must have a whale of a deal somewhere else.
Vanguard has probably been shorting down and accumulating lots in dark pools.