The bull market has continued roaring ahead in 2013, and many of the companies that appeared to be in the direst of straits coming out of 2012 have been among the best-performing stocks so far this year. But just because these stocks appear to be back from the dead doesn't mean that they're necessarily smart bets for new money now.

In the following video, Fool contributor Dan Caplinger looks at five stocks that have been among the top performers so far in 2013. He notes that despite their big runs, they've still left long-term investors with substantial losses, and it's far from clear whether all of them will survive. Dan concludes with his own ideas about which of these five stocks has the best prospects going forward and which appear riskier than they're worth.