美股下行后反弹，美国联邦政府停摆继续

Group 1: Macroeconomic Indicators - The NFIB Small Business Optimism Index for September recorded 98.8%, below the expected 100.6% and the previous value of 100.8% [1] - The NAHB Housing Market Index for October exceeded expectations, recording 37, higher than the expected 33 and the previous value of 32 [2] Group 2: Index Performance - The S&P Oil & Gas Index fell by 0.31% over the past week, while the Nasdaq 100 Index rose by 2.46% and the S&P 500 Index increased by 1.70% [3][4] - All 11 sectors of the S&P 500 Index saw gains, with the Communication Equipment sector leading at 3.64% [4] Group 3: Market Trends and Investment Opportunities - Following a decline, U.S. stocks rebounded last week, with gold prices reaching nearly $4,400, setting a new historical record [5] - Concerns about credit quality arose from reports of regional banks, but the market recovered due to easing tariffs and solid performance from several regional banks [5] - The S&P 500 Index is recognized as a benchmark for U.S. stocks, covering over 500 representative companies across 11 sectors, accounting for approximately 80% of the total market capitalization of U.S. stocks [5]