BMRA - Definitely risky. That's why I covered the short yesterday in AH, and re-shorted this morning. This one has a pretty good history of jumping on PRs and then falling on its face. Last annual profit was 2013. It surely has the ability to spike up, though, like it did yesterday.
I have seen lots of $1 stocks with strong earnings and solid balance sheets triple, quadruple and more, but I have yet to see one go below zero.