March wasn't kind to many of biotech's hottest names. From Geron (NASDAQ:GERN) to Exelixis (NASDAQ:EXEL), many of biotech's most talked-about stocks suffered headache-inducing falls over the past month. Biotech's had a good run lately with the market's rise, and while investors can be excused for taking profits, were some of March's biggest losers victims of unfortunate timing or real reasons for concern?

Geron suffered perhaps the worst loss of the month by plunging more than 50% after the FDA placed a clinical hold on the company's developmental drug Imetelstat, but it was hardly the only up-and-coming biotech to endure a big fall. Do March's biggest losses signal a great buying opportunity for savvy investors, however? Find out in the video below, as Motley Fool contributor Dan Carroll takes you through three of the past month's biggest losers -- and whether or not they can bounce back for your portfolio's gain.