Where's the conviction? To hold any long position, you must have it, almost unshakeable! Look at SRPT, yesterday up $2.33 and today down $2.22. I am holding my shares until they announce accelerated approval. Did I see red today, YES--and it did hurt! I repeat, I am holding my shares for the BIG money to be made with this company, same with ATRS. Hang in there yOda! Tomorrow I am planning a major buy in my account.
You're selling way before this company even realizes its potential. The stock is volatile...I would hold even through the huge swings. Unless of course your leveraged into margin and can't afford to cover it up. Then sell, and sell now. But if you have some skin in the game that can be protected, keep it on the fire- this thing is going to sizzle into next year.