Check out the companies making the biggest moves in premarket trading: Walmart — The retail giant slipped nearly 2%. On Saturday, President Donald Trump said Walmart should " eat the tariffs " and not raise prices. Treasury Secretary Scott Bessent told NBC's "Meet the Press" on Sunday CEO Doug McMillon told him the company would absorb some of the levies. Netflix — Shares shed 1.8% on the back of a downgrade at JPMorgan to neutral from overweight. The bank cited the stock's recent outperformance and noted there is no change to its long-term bullish view. Nvidia — Shares of Nvidia dropped 3% despite CEO Jensen Huang announcements on Monday about the company's new product. Nvidia's new "NVLink Fusion" program will allow customers and partners to use non-Nvidia CPUs and GPUs together with Nvidia products and NVLink. Tesla — The electric vehicle maker lost 4%. On Monday, China's Xiaomi said it was launching its new Yu7 sports utility vehicle, which is seen as a challenger to Tesla. Reddit — The social media stock fell almost 7% after being downgraded at Wells Fargo to equal weight from overweight. The bank said the disruptions in search traffic are likely to become permanent as Google integrates full artificial intelligence search capabilities. TXNM Energy — The stock popped 9% after the energy company agreed to be acquired by Blackstone's infrastructure unit. As part of the deal, TXNM Energy shareholders will receive $61.25 in cash for each share they own. Alibaba — U.S.-listed shares of the Chinese e-commerce giant were down 2% following a New York Times report that the Trump administration has raised concerns about Apple 's plan to use Alibaba's A.I. on iPhones in China. UnitedHealth — The health insurer added 4%, regaining some ground after losing 23% last week. UnitedHealth had suspended its 2025 guidance, saw its CEO step down and is reportedly the subject of a U.S. Department of Justice investigation . —CNBC's Pia Singh contributed reporting.