In pre-market trading on April 28, 2025, several major U.S. stocks experienced notable movements amid earnings reports and industry developments. Nvidia shares declined by approximately 1.2% to 1.5% following news that China's Huawei is testing a new AI chip intended to compete with Nvidia's H100. Domino's Pizza reported mixed first-quarter results, with revenue missing expectations and U.S. same-store sales declining, leading to a pre-market drop of around 3.6%. Rockwell Automation beat earnings per share estimates but maintained a full-year profit outlook midpoint below expectations, causing a slight decline of 0.7%. Boeing shares rose by about 1.5% after an upgrade from Bernstein, despite news that Airbus is acquiring Spirit AeroSystems assets, which also impacted Spirit's shares. Eli Lilly saw a 1.6% decline after receiving a double downgrade from HSBC. Amazon's stock increased by 0.6%, although some sellers are reportedly pulling out of Prime Day due to tariffs. Tesla's shares rose 0.7% as it raised prices in Canada ahead of counter-tariffs and closed above its 50-day moving average; additionally, Elon Musk's XAI is reportedly raising approximately $20 billion with a valuation exceeding $120 billion. Deliveroo surged 18% following a $3.6 billion takeover offer from DoorDash. Other notable pre-market gainers included Plug Power, Peloton, and Opendoor, while Progressive received an upgrade from Bank of America. The Nasdaq index fell at the start of the earnings week amid these mixed corporate results.