Check out the companies making the biggest moves premarket: Lululemon Athletica — Shares sank 13% after the athleisure company lowered its full-year earnings and revenue guidance , citing headwinds. The company’s current-quarter earnings and revenue guidance also came below what analysts were expecting, per LSEG. Docusign — The software stock slipped 4% after Docusign’s outlook failed to impress the Street. The company sees second-quarter revenue in a range of $865 million to $869 million, encompassing the LSEG consensus estimate of $866 million. Chip stocks — A slew of companies appeared set to fall again on Friday after tumbling on Thursday following Broadcom’s earnings report. Broadcom itself was off 1% again, after it fell 12.5% the day before. Advanced Micro Devices was off almost 3%, while Intel was down more than 2.5%. Arm slipped 5%. Nvidia fared better, only down 1%. Memory stocks — The chipmaker sell-off extended to memory stocks on Thursday, and that continued in premarket trading Friday. Micron Technology and Lam Research were tumbling 3%, while Seagate Technology was down 2.5%. Sandisk fell 1.5%. Cooper Companies — Shares added almost 5% after the medical devices company posted second-quarter adjusted earnings of $1.21 per share, beating the $1.10 per share consensus estimate, per FactSet. Cooper Companies also posted revenue of $1.08 billion, which exceeded the $1.05 billion analysts had pencil …