刚刚！黑色星期二！原因，找到了

Core Viewpoint - The global stock market experienced a significant downturn on November 18, with major indices in Asia and the U.S. showing substantial declines, attributed to various factors including geopolitical tensions, economic concerns, and anticipation of key earnings reports [2][4][12]. Group 1: Market Performance - The Nikkei 225 index fell by 3.22%, marking its largest single-day drop since April, closing below 49,000 points [4]. - The KOSPI index in South Korea dropped by 3.32%, reflecting worsening risk sentiment, particularly in the semiconductor sector [4]. - A total of 4,106 stocks declined in the A-share market, with only 1,278 stocks rising, indicating a broad market sell-off [10]. Group 2: Contributing Factors - Concerns over Sino-Japanese relations heightened market anxiety, contributing to the overall decline [12]. - The Japanese bond market faced significant selling pressure, especially in ultra-long-term bonds, due to fears surrounding the government's expanding economic stimulus plans and potential fiscal risks [12]. - The market is recalibrating expectations regarding the Federal Reserve's interest rate decisions, with analysts noting that volatility in the cryptocurrency sector is spilling over into other high-risk assets [13]. - Anticipation of Nvidia's earnings report is causing investors to reassess the high valuations in the AI sector, with concerns that the upcoming report could impact the broader market, particularly the tech-heavy Nasdaq index [14].