Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of building products maker Gibraltar Industries (NASDAQ:ROCK) jumped 10% today, after reporting earnings.

So what: Fourth-quarter revenue rose 1%, to $172.6 million, in-line with estimates. On the bottom line, earnings per share of $0.05 were $0.02 better than estimates, and that was enough to push the stock higher.  

Now what: Management is very optimistic that earnings will continue to improve in 2013 as industry conditions improve, and restructuring charges subside. Still, shares are trading at 19 times forward earnings estimates, and the company has a long way to go living up to those expectations. The fourth quarter was good, but I'd like to have better results in the bag along with more growth before jumping into this stock.

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