Though the market has been somewhat steady so far in 2014, the same cannot be said for shareholders of 3-D printing companies. Some of the industry's largest names have lost well over one-third of their value in a few short months.

No company, however, has lost more than ExOne (XONE) -- a small 3-D printing company with a focus on large, industrial customers. After the company's earnings release last week, shares continued to be punished -- down as much as 18% in one day.

In the video below, the Motley Fool's Brian Stoffel -- a shareholder in ExOne himself -- digs in and lets you know why the company's shares were trading so low, and what he plans on doing with this new information.