美股三大股指齐跌，市场静待美联储决议！科技股逆势撑盘，中概“减肥神药”一夜翻倍

Market Overview - US stock market showed weak fluctuations with all three major indices closing lower: Dow Jones down 215.67 points (-0.45%) at 47739.32, Nasdaq down 32.23 points (-0.14%) at 23545.90, and S&P 500 down 23.89 points (-0.35%) at 6846.51 [1] - Investors remained cautious ahead of the Federal Reserve's monetary policy meeting in December, leading to light trading activity [1] Sector Performance - Materials, energy, and telecommunications sectors led the decline, each dropping over 1%, while technology and semiconductor sectors showed resilience [1] - The US Technology Seven Giants Index slightly fell by 0.28%, with mixed performances among major tech stocks: Microsoft and Nvidia rose by 1.63% and 1.72% respectively, while Google, Amazon, and Meta dropped over 1% [1] Notable Stock Movements - Tesla experienced a significant drop of 3.4%, primarily due to Morgan Stanley's downgrade, citing high valuation and a volatile trading environment expected in 2026 [1] - Some semiconductor stocks strengthened in after-hours trading, with Nvidia and AMD both rising over 2%, and Intel increasing by 0.7% [1] Chinese Stocks Performance - Nasdaq China Golden Dragon Index slightly increased by 0.08%, with individual stocks showing mixed results [2] - Suodi Bio emerged as a highlight, with its stock price surging over 102% due to significant results from a mid-stage clinical trial for an obesity treatment candidate, achieving a 11.3% weight reduction [2] - Other notable movements included Huya and Century Internet rising over 4%, while Legend Biotech fell over 7% and ZTO Express dropped nearly 3% [2] Federal Reserve Focus - Market attention is highly focused on the upcoming Federal Reserve interest rate decision, with the probability of a 25 basis point cut rising to approximately 89% [3] - Two potential scenarios for the Fed's meeting were outlined: a dovish cut to support a weak labor market, which may raise recession concerns, or a hawkish cut with a strong policy guidance that could adjust market expectations for 2026 [3] Commodity Market - The commodity market saw adjustments, with international oil prices significantly retreating: WTI crude futures fell below $60 per barrel, and Brent crude closed at $62.48, both down about 2% [4] - Precious metals showed narrow fluctuations, with London gold slightly up by 0.02% and silver stabilizing above $58 per ounce [4] Company News - IBM announced plans to acquire data streaming platform Confluent Inc. for approximately $9.3 billion, marking its largest acquisition to date [4] - Google revealed progress on its AI glasses, with the first model featuring Gemini expected to launch in 2026, competing with Meta's products [4] - Apple’s chip business head, Johny Srouji, denied rumors of leaving the company, which helped stabilize Apple's management [4]