Stocks making the biggest moves premarket: SpaceX, United Airlines, Roku & more

Check out the companies making the biggest moves premarket: SpaceX — Shares were up 5% as the company prepared for it second day of trading on Monday. SpaceX in its debut at the Nasdaq on Friday rose 19% from its IPO price of $135 per share. Energy stocks —The group tumbled as U.S. oil prices fell 5% to near $80 per barrel following a U.S.-Iran deal that is set to reopen the Strait of Hormuz. APA and Devon Energy were both off more than 3.5%. Marathon Petroleum and EOG Resources were down 3%. …