Problem is that these kinds of companies attract hedge funds, traders and unsavory market makers that prey on stocks that can go up and down rapidly. The market has been hit the last few days and traders get out of these stocks and then short them. If you think that this $1.6 billion company gate become a $10 billion or more enterprise then buy more or if you have a ton then sit tight. When you look at the analyst''s estimates and the forward PE vs. the growth rate and then add in what the management has said on conference calls, it appears that this is a real winner.
I have been a big shale gas investor and the same pests I mention above swarm over those stocks. However, the companies march forward. I do not know if they make money or not: however, I am up so much I don't care. Keep the faith and things will work out and SNTS will rule.