I wish I knew the answer also. ANV may or may not know the answer. If it isn't related to any operational issues, I would think ANV would be considering a stock buyback program to show long term confidence and to stem the declining share price..
There is also plenty of call buying, I don't know how to interpret it.
I'm afraid very soon they will let us know about an "unanticipated" problem. I'm quite underwater (+$25) and I'm not buying any at these levels. This underperformance is a very bad omen.