**[AI Stock Sell-Off Combined with U.S. Treasury Yield Breaking 5% Leads to Monday Decline in U.S. Stocks, Market Awaits Fed Decision]** Reported by Golden Finance, on Monday, the three major U.S. stock indices collectively closed lower: the Dow fell 152 points (0.3%), the S&P 500 dropped 0.5%, and the Nasdaq declined approximately 0.6%. Stock index futures were mostly flat on Monday evening. The sell-off of AI-related stocks was the main drag—Anthropic CEO Dario Amodei called for slowing down the pace of AI development, OpenAI CEO Sam Altman ruled out the possibility of an IPO this year over the weekend, Nvidia fell 3%, Corning dropped 13%, and the iShares AI and Innovation Technology Active ETF (BAI) fell nearly 4%. The 10-year U.S. Treasury yield briefly broke above 5% on Monday, marking the highest level since October 2023. Saudi Arabia closed a key pipeline bypassing the Strait of Hormuz, with Brent crude settling above $105 per barrel and WTI settlement prices exceeding $101 per barrel. The market's focus has shifted to Wednesday's Federal Reserve decision. Federal funds futures indicate a roughly 92% probability of a 25 basis point rate hike, raising the upper limit of the target rate to 4.0%. Natixis U.S. Chief Economist Christopher Hodge expects this to be the first rate hike of the Waller era, with the Fed emphasizing that the decision is isolated and does not pre-commit actions for subsequent meetings. Asia-Pacific markets opened lower on Tuesday morning, with the Nikkei 225 down 0.25% and South Korea's Kospi falling 0.43%.