In the following video, Motley Fool industrials analyst Blake Bos takes a look at 3D Systems (NYSE:DDD), and how several of the company's top executives sold off large portions of their positions in the company during the month of May. Blake tells investors why this may mean that shares are overpriced at the moment, and gives us a picture of what his investing strategy would be in the additive manufacturing space today.

Blake Bos has no position in any stocks mentioned. The Motley Fool recommends 3D Systems. The Motley Fool owns shares of 3D Systems and has the following options: Short Jan 2014 $36 Calls on 3D Systems and Short Jan 2014 $20 Puts on 3D 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 has a disclosure policy.