美股回调，纳指科技ETF、标普ETF、纳指ETF、道琼斯ETF下跌

Market Performance - US stock market faced significant declines, with all three major indices recording their worst performance since October 10 [1] - Dow Jones dropped over 700 points, S&P 500 fell nearly 1.7%, and Nasdaq briefly dipped below the 50-day moving average [2] Sector Performance - Technology stocks were the primary focus of the sell-off, with Tesla down 7%, Nvidia and Broadcom down 5%, and Disney dropping nearly 8% due to disappointing earnings [2] - Nasdaq technology ETF fell over 3%, while various other ETFs including S&P ETF and Dow Jones ETF declined over 2% [2][3] Valuation Insights - Major US indices are currently at high valuation levels, with Nasdaq index PE at 41.04, S&P 500 at 28.67, and Dow Jones at 31.32 [4] - Year-to-date performance shows significant gains for some tech stocks, with Google up 47.64% and Nvidia up 39.18% [4] Liquidity and Interest Rate Dynamics - Liquidity conditions have rapidly deteriorated, exacerbated by a 44-day government shutdown that froze expected fiscal spending [9] - Increased US debt issuance has withdrawn substantial cash from the market, tightening the financing environment and reducing available lending capital [9] - The Federal Reserve's recent statements indicate a shift in interest rate expectations, with a notable decrease in the probability of a rate cut in December [10][11] Future Earnings Projections - Forecasts suggest that US stock earnings growth could reach 13.5% in 2026, driven by sustained AI demand and easing tariff risks [12] - The market is expected to focus on two main narratives: the ongoing strength of tech stocks, particularly in AI, and a potential recovery in cyclical sectors such as industrials and materials [12]