[Overnight global news you need to know on Saturday: Nvidia had its worst weekly performance in 18 months; the United States ordered all flights to suspend departures; news said Hassett will leave the White House, but he denied it] global news 1. There is news that White House economic adviser Hassett will leave the White House, and Bessant or Zervos may take over. But Hassett called reports that he would leave the White House "untrue." 2. The U.S. Federal Aviation Administration issued a ground grounding order due to communication problems, and ground flights at all airports were suspended until further notice. 3. The National Weather Service stated that the agency is experiencing nationwide Internet and communication problems, and technicians are actively dealing with them to restore them as soon as possible. 4. The Federal Reserve pointed out in its semi-annual financial stability report on Friday that artificial intelligence and high asset valuations may bring potential vulnerabilities. 5. The Federal Reserve announced a short-term Treasury bond purchase plan from November to December, extending the suspension of reserve management purchases until mid-December; at the same time, the Federal Reserve will purchase $14 billion in short-term Treasury bonds for reinvestment in mortgage-backed securities (MBS). 6. The Bank of America has increased its expectations for tightening by the Federal Reserve and is expected to raise interest rates three times in a row. 7. Santander raised its expectations for the Federal Reserve to raise interest rates by 25 basis points each in December and March next year. 8. Trump extended shipping exemptions for oil and fertilizer shipments for 90 days. 9. European Commission President Von der Leyen said that at least 500 billion euros of investment are needed in the computing field. The next European budget will reflect this need as well as AI ambitions. 10. Goldman Sachs strategists expect the dollar to weaken in 2027 after a "strong but mixed" performance in 2026. Three factors that previously supported the dollar - inflation, relative resilience to energy prices and booming AI-related investment - will turn into drags. global market 1. The three major U.S. stock indexes closed with mixed gains, with the Dow rising 0.1%, the Nasdaq falling 0.91%, and the S&P 500 falling 0.4%. On the weekly front, the Dow rose 2.07% this week, the Nasdaq rose 2.27% this week, and the S&P 500 rose 2.51% this week. NVIDIA's stock price fell 13% this week, the largest weekly decline since April 2025, and the sixth consecutive week of decline, setting the longest losing streak since 2012. This week's market value evaporated by more than $573 billion. 2. International oil prices fluctuated on Friday. Brent crude oil for January delivery rose 2 cents, and the New York settlement price was US$95.84 per barrel; WTI for December delivery fell 0.2%, and the settlement price was US$88.56 per barrel. 3. International precious metals saw mixed gains and losses. Spot gold prices rose 0.06% to US$3,879.92 per ounce; spot silver prices fell by 2.72% to US$48.68 per ounce. 4. Livermore’s leading index of Chinese concept stocks closed down 0.18%. Among the constituent stocks, iQiyi fell by more than 7%, Weilai fell by more than 5%, Bawangchaji rose by more than 6%, and Tiger Securities rose by more than 5%.