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 datacenter operator Terremark Worldwide (Nasdaq: TMRK) jumped more than 12% overnight thanks to a strong earnings report backed by equally firm guidance.

So what: The stock has now gained 52% in six months and 74% over the past year. That's a remarkable performance when you consider that the company actually missed analyst targets in four of the past six quarters.

Now what: The growth story Terremark is telling is very different from the weakness reported by head-to-head rival Equinix (Nasdaq: EQIX). Server hosting and network management services can be very profitable when done right -- or a terrible business when management can't hold onto its customers. Terremark is doing just about everything right at the moment, and it shows in the stock chart.

Interested in more info on Terremark? Add it to your watchlist by clicking here.

Fool contributor Anders Bylund holds no position in any of the companies discussed here. 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.