3D printing stocks underperform following bearish Blair note

|About: 3D Systems Corp. (DDD)|By:, SA News Editor

William Blair, which has been bearish on 3D printer makers for a while, is out with another critical note on 3D Systems (DDD -2.7%). The firm expects thinks sales growth is slowing, and reports sales stemming from 3D's Staples partnership have been dismal.

Stratasys (SSYS -1.6%) and ExOne (XONE -2.7%) are following 3D Systems lower on a rough morning for equities.