Overnight headlines on April 28th

1. The US stock market experienced mixed movements on Monday. The Dow fell by 0.13%, the Nasdaq rose by 0.20%, and the S&P 500 rose by 0.12%. Both the S&P and Nasdaq reached new highs. 2. Nvidia rose by 4%, reaching a historic high with a trading volume of 39.231 billion US dollars. A data center developer closely linked with Nvidia plans to issue $4.5 billion in junk bonds on Monday to finance its 200-megawatt project in Nevada. 3. White House press secretary Levy said that President Trump convened a meeting with national security officials earlier that day to discuss Iran's proposal. 4. Microsoft will no longer have exclusive rights to use OpenAI's artificial intelligence models and products. 5. The Musk v. OpenAI case officially went to trial on April 27 local time, marking a crucial stage in the legal battle known as the "AI Century Lawsuit." 6. Micron and SanDisk stock prices continue to rise, with strong long-term demand for storage chips expected. 7. Global professional services giant Accenture announced on Monday that it will expand Microsoft's Copilot 365 AI assistant to all of its approximately 743,000 employees. 8. Tianfeng International Securities analyst Guo Mingxu: Qualcomm collaborates with OpenAI to develop intelligent smartphones. 9. Over 560 Google employees have jointly written to CEO Sundar Pichai urging him to refuse to allow the US government to use Google's AI technology for confidential military operations.