美联储重磅来袭，美股全线下跌，半导体再遭重挫，中概股尾盘跳水

Group 1: Federal Reserve Actions - The Federal Reserve lowered the federal funds rate target range from 4.50%-4.75% to 4.25%-4.50% during the meeting on October 29-30, marking the second rate cut of 2025 by 25 basis points [1] - The first rate cut occurred from September 17-18, reducing the rate from 4.75%-5.00% to 4.50%-4.75% to address economic slowdown and weak employment signals while inflation gradually approaches the 2% target [1][3] Group 2: Economic Data and Market Reactions - October CPI data showed a slight increase in core inflation to 3.3%, higher than expected, raising investor concerns about persistent inflation [5] - Following the Fed's meeting, the probability of a rate cut in December dropped from 92% to 68%, indicating a more hawkish stance from the Fed [3][5] - U.S. stock markets reacted negatively, with major indices experiencing significant declines, particularly in tech stocks, due to the Fed's hawkish comments and inflation concerns [7][12] Group 3: Sector Performance - The semiconductor sector faced a sharp decline, with the semiconductor index dropping by 1.9%, influenced by competitive pressures from Chinese AI advancements [9] - Major tech companies like Microsoft and Amazon saw their revenue growth expectations lowered, with their stock prices declining by 1.5% and 1.2% respectively [9] - Chinese concept stocks experienced volatility, with Baidu initially rising over 11% but ultimately closing up only 2.66%, while Pinduoduo fell by 7.33% due to unmet revenue expectations [14] Group 4: Market Sentiment and Future Outlook - The market is currently in a state of uncertainty, with investors awaiting key earnings reports and delayed employment data that could reshape year-end market trends [16][18] - The overall market is characterized by high valuations and uncertainty, with small-cap and cyclical stocks potentially benefiting from rate cuts, but inflation and trade tensions remain concerns [18]