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Stratasys (SSYS) Volatile Into the Close; Tilson Short and Highlights $299 Consumer 3D Printer Apr 9, 2014 04:31PM
3-D Printers on Watch Following Negative Piece (DDD) (SSYS) (VJET) Mar 10, 2014 08:35AM
3D Systems (DDD) Tripped-Up after Tilson Calls 'Unbelievably Great Short' Dec 3, 2013 12:05PM