每经AI快讯，美股三大指数集体收涨，道指涨0.86%，纳指涨0.17%，标普500指数涨0.3%，特斯拉涨超 4%，微软跌超2%。有色金属、加密储备概念股涨幅居前。 ...

Group 1: Market Performance - The US stock market closed mixed on October 14, with the Dow Jones up 0.44%, while the S&P 500 and Nasdaq fell by 0.16% and 0.76% respectively [1] - Major tech stocks mostly declined, with Nvidia dropping 4.41%, resulting in a market value loss of over $20 billion [1][5] - The Nasdaq Golden Dragon China Index decreased by 1.95%, with several Chinese stocks experiencing significant declines [5] Group 2: Federal Reserve Insights - Federal Reserve Chairman Jerome Powell indicated that the Fed may halt the reduction of its balance sheet in the coming months, acknowledging signs of tightening in the money market [2][7] - Powell suggested potential support for another interest rate cut this month, citing rising downside risks in the labor market [8] - Boston Fed President Collins called for further rate cuts due to increasing concerns about a weakening labor market [8] Group 3: Sector Performance - Most large tech stocks fell, with Broadcom down over 3%, and Tesla and Amazon each declining more than 1% [4] - Semiconductor and cryptocurrency-related stocks saw significant losses, with Intel down over 4% and other related stocks also experiencing declines [4] - Conversely, sectors such as rare earths, airline services, and infrastructure operations saw gains, with JetBlue Airways rising nearly 8% [4]