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 European 3-D printer maker voxeljet AG (NYSE:VJET) jumped 13% today after the company released earnings.

So what: Third-quarter revenue jumped 77%, to 3.5 million euros, and net income swung to a profit of $211,000 euros, or 0.11 euros per share. There's still 5.5 million euros in backlog, and management expects revenue of 11 million euros, meaning the fourth quarter would be a slight slowdown from the third. 

Now what: The 3-D printing business is beginning to gain steam, especially in the commercial and industrial setting. As technology improves, the opportunities for a company like voxeljet are tremendous. It's still too expensive for my risk tolerance, but if the company can pick up growth in 2014, shares may become intriguing.

Fool contributor Travis Hoium has no position in any stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. 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 has a disclosure policy.