Stocks making the biggest moves premarket: iRobot, Las Vegas Sands, Tilray & more

Check out the companies making headlines before the bell. Tilray — The cannabis stock jumped about 3%, building on last week’s rally sparked by news that President Donald Trump would instruct federal agencies to give the drug a less-stringent Schedule III classification from its current Schedule I designation. Dollar General — Shares rose 3% after the retailer on Monday received an upgrade from JPMorgan. The stock was upgraded to overweight, with analysts raising its price target to $166 per share from $128. Las Vegas Sands , Marriott International — The hospitality giants rose 2.9% and 1.5%, respectively, after receiving upgrades to buy at Goldman Sachs. The bank said Marriott will benefit from strength among high-end consumers, while Las Vegas Sands will get a boost from sustained momentum in Macao. Rocket Lab , EchoStar — Space-linked stocks such as Rocket Lab and EchoStar gained 2% following reports that SpaceX aims to go public in 2026 after clinching an $800 billion valuation in its latest funding round. Rocket Lab also got a boost after saying it launched its first mission for Japan’s Aerospace Exploration Agency. Alibaba , Baidu — New data pointing to an economic slowdown in China hurt stocks of e-commerce and internet services firms based in the country. The data shows Chinese retail sales slowed to 1.3% in November compared to the same period a year ago, slowing from 2.9% in October. Industrial production also missed estimates, climbing 4.8% versus expectations for a 5% jump. Alibaba edged 1.5% lower, while Baidu shed 2%. ServiceNow — Shares shed 4% after Bloomberg News , citing people familiar with the matter, reported that the software platform has engaged in talks to acquire cybersecurity firm Armis for around $7 billion. iRobot — The maker of Roomba vacuum robots plummeted 83% after the company declared bankruptcy over the weekend. Through the Chapter 11 process, Hong Kong-based Picea will acquire iRobot. — CNBC’s Fred Imbert contributed reporting.