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: Network design and operations specialist Black Box (Nasdaq: BBOX) saw its shares soaring to the tune of 11.5% today, and the gains just keep coming.

So what: Black Box delivered stellar sales but merely adequate earnings in the third quarter and guided to another mixed bag in the fourth quarter -- but that's judging the results against the expectations of just two analyst firms. More to the point, the company's revenues are accelerating while margins are growing wider, and that adds up to plenty of earnings growth.

Now what: True to its name, Black Box tends to fly under the radar. The company installs and maintains networking gear from Cisco Systems (Nasdaq: CSCO) and other large hardware builders. The stock is breaking new multiyear highs today -- maybe this performance will inspire more analysts and investors to take interest in very reasonably priced play on exploding network demand.

Interested in more info on Black Box? Add it to your watchlist.

Fool contributor Anders Bylund holds no position in any of the companies discussed here. The Fool has created a bull call spread position on Cisco Systems. Motley Fool Alpha owns shares of Cisco Systems. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool is investors writing for investors.