After 3D Systems lowered its expectations for earnings per share for the last quarter of 2013 this morning, its stocks took a dive, bringing fellow 3D printing companies like Stratasys and Voxeljet down as well. 3D Systems was down 27.4 percent this morning and has since bounced back a little bit to being down 15.07 percent, closing at $64.34. The company lowered its expectations after higher than expected spending on research and development, sales and marketing expenses and acquisition concentration costs.
