3D printer makers Stratasys (SSYS +4.4%) and 3D Systems (DDD +4.2%) are closing the week with...

|By:, SA News Editor

3D printer makers Stratasys (SSYS +4.4%) and 3D Systems (DDD +4.2%) are closing the week with solid gains, even though JPMorgan launched coverage on Stratasys with a Neutral and $86.50 PT. Nokia's 3D printing announcement could be stoking investor enthusiasm ... or we might just be seeing some end-of-the-week short-covering. 42.1% of 3D's float, and 9.1% of Stratasys' float, was shorted as of Dec. 31.