I believe it's just due to the fact that ATRS is not a sexy biotech with some multi billion dollar cancer cure. This is a slow steady pipeline play that I believe will bear fruit as we get closer to 2016.
Fair disclosure, I bought calls today as I feel the worst of news is priced in and over. We were last at $2.75 when the company was AIS and Otrexup wasn't approved and QST wasn't enrolled.