this drop has all the earmarks of attaining IBD 50 status. as i no longer subscribe to IBD i can't be sure that this stock did make that list. it is very typical for a stock to tank once on the list. investing in IBD 50 stocks is a sure way to lose all your money.
once it fills the gap down to $13.69, that will also pretty much mark the 8% drop rule of the IBDers and should then mark the bottom, as the gunners will have chased the IBD crowd at that point. the stock has dropped almost 15% on no news other than higher oil.