February was a clear winner for the broad market. When all was said and done the S&P 500 advanced to the tune of 5.2% last month. Not every name in the S&P 500 logged gains, however. A few of them suffered serious losses.

Veteran investors understand such setbacks can be buying opportunities. Just because a stock's been beaten down, however, doesn't inherently mean it's worth owning.

Here's a closer look at last month's biggest losers among the S&P 500's constituents, and some discussion about whether or not it's time to jump into any (or even all) of them.

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Source Fool.com