As distressing as it is to shareholders to watch their stock plummet 10% in one day, remember that it is other holders causing the decline and it has nothing to do with the fundamentals of the company itself. Of course, I am not ignoring all the bad news (or lack of good news) but rather, pointing out that this rapid sell off is sentiment driven.
As Warren says, "be careful when others are greedy and greedy when others are careful"