人工智能泡沫担忧加剧 美股遭遇巨幅震荡

Group 1 - The core point of the news is that the major U.S. stock indices experienced a significant reversal, closing lower after Nvidia's earnings report failed to sustain market enthusiasm [1] - The Dow Jones Industrial Average fell by 386.51 points, closing at 45,752.26, a decline of 0.84% [1] - The S&P 500 index dropped by 103.40 points, closing at 6,538.76, a decrease of 1.56% [1] - The Nasdaq Composite Index decreased by 486.18 points, closing at 22,078.05, a decline of 2.15% [1] - Among the 11 sectors of the S&P 500, 10 sectors declined, with the technology and consumer discretionary sectors leading the losses at 2.66% and 1.73% respectively [1] - Nvidia's earnings report showed significant growth in revenue and net profit for the third quarter, along with improved profit margins, and provided an optimistic outlook for the fourth quarter [1] - Following the earnings report, Nvidia's stock initially rose over 5% in after-hours trading but later fell over 3% on the following day [1] - Analysts noted concerns about a potential bubble in the AI sector, as major tech companies announced capital expenditures totaling trillions of dollars, leading to a notable pullback in related stocks [1] Group 2 - The U.S. unemployment rate rose to 4.4% in September, the highest level since November 2021 [2] - Market expectations for a 25 basis point rate cut by the Federal Reserve in December increased from 30.1% to 39.5%, but remained significantly lower than previous weeks [2] - Federal Reserve Governor Michael Barr indicated that the current inflation rate is at 3%, while the target is 2%, suggesting a cautious approach to monetary policy [2] - ING's chief international economist noted that due to the Fed's recent hawkish stance and lack of official economic data before the December meeting, the market anticipates that the Fed may not cut rates again until early 2026 [2]