Biggest Movers in Services Stocks Now – SHOP PTC DDD AROC By: InvestorPlace January 21, 2016 at 05:15 AM EST Read More >> Related Stocks: 3D Systems Corp Anavex Lf SC Archrock Inc Bitauto Holdings Ltd Cleveland Biolabs Engility Holdings Inc Exelixis Inc Grubhub Ord Shs Netflix Pra Group Inc Proofpoint Inc Ptc Inc Shopify Inc Sunstone Hotel Investors Synaptics Inc Xunlei Ltd ADR Zendesk Inc