日经中文网·2025-11-05 08:00Market Overview - The Nikkei average index closed at a new low since October 24, dropping 1284 points (2.5%) to 50212 points on November 5, with an intraday decline exceeding 2400 points, reaching a low of 49073 points [2] - Concerns over the overheating of AI and semiconductor-related stocks have led to profit-taking and a shift in market sentiment towards caution [2][5] Key Events - On November 4, Palantir Technologies' stock fell nearly 8%, which is considered a trigger for the sell-off in AI and semiconductor stocks in both the US and Japan [4] - Despite Palantir's earnings exceeding market expectations due to AI data analysis demand, the revelation that investor Michael Burry's firm held put options against Palantir's stock was interpreted as a bearish signal [4][5] Market Sentiment - Major financial institutions like Goldman Sachs and Morgan Stanley have indicated that the market may face adjustments, contributing to a shift from bullish to cautious sentiment among investors [5] - The Nasdaq composite index, heavily weighted in tech stocks, fell by 2%, while the Philadelphia Semiconductor Index (SOX) dropped by 4% [5] Stock Performance - SoftBank Group and Advantest, which previously led the market rally, experienced significant declines, with SoftBank's stock dropping as much as 14% and Advantest falling by 10% [5] - Fujikura, a Japanese cable manufacturer associated with AI data centers, saw its stock plunge by 10% during the session [5] Valuation Metrics - The NT ratio of the Nikkei average to the TOPIX index reached a historical high of 15.73 on October 31, indicating potential overvaluation [6] - The Nikkei average's RSI (Relative Strength Index) exceeded 73% as of November 4, surpassing the "overbought" threshold of 70% [5][6] Analyst Insights - Analysts from Goldman Sachs noted the high NT ratio and RSI levels, suggesting that a short-term market correction or consolidation phase is likely [6]