MU, GPRO, FIT, DDD, others hit as markets bail on former tech momentum plays

• Investors continue throwing in the towel on former tech high-flyers: Micron (NASDAQ:MU -6.3%), GoPro (GPRO -4.4%), Fitbit (FIT -12.3%), 3D Systems (DDD -3.7%), Rackspace (RAX -6.7%), and Etsy (ETSY -8.8%) have each fallen to new 52-week lows on a day the Nasdaq is down 0.6%.
• FireEye, which received cautious notes from Wedbush and Piper, is also selling off. As is ExOne (XONE -11.6%). Margin calls and/or fund liquidations could be contributing to the rout.
• Etsy's losses come amid a lockup expiration. Possibly weighing on Rackspace: A Piper CIO survey indicating Amazon Web Services and Microsoft Azure continue gaining cloud infrastructure (IaaS) mindshare; the firm sees AWS/Azure having a duopoly, with Google, Rackspace, and IBM trailing.
• Fitbit is now down 35% since Jan. 5, when the company's Blaze smartwatch was unveiled at CES. Shares go for 17x a 2016 EPS consensus of $1.13. GoPro and Micron now respectively trade for 14x and 8x their 2016 and FY17 (ends Aug. '17) consensus EPS estimates.
• Update: Likely weighing on ExOne: The company has struck deals for at-the-market stock offerings worth up to $50M.