3D printer stocks

3D printer companies:

• 3D Systems (DDD)
• Stratasys (SSYS)
• ExOne (XONE)
• Voxeljet (VJET)

finviz charts: http://finviz.com/screener.ashx?v=211&ta=0&o=-change&t=VJET,XONE,DDD,SSYS

Related stock: Proto Labs (PRLB)

++NNDM

++Desktop Metal (DM) (12/20 IPO)

ave vol - 30 days