刚刚，大跳水！AI，突发！

Core Viewpoint - The market's concerns regarding the valuation of technology stocks, particularly in the AI sector, remain unresolved [1]. Market Reaction - Following a significant drop in U.S. tech stocks, the Japanese stock market experienced a sharp decline, with the Nikkei 225 index falling over 1000 points at one point, representing a drop of more than 2% [2][4]. - SoftBank Group saw its stock price plummet by nearly 20% over four trading days, resulting in a market value loss exceeding 7.6 trillion yen (approximately 35 billion RMB) [2][4]. AI Valuation Concerns - The recent downturn in Asian tech stocks is closely linked to the decline of AI concept stocks in the U.S. market, with notable drops in companies like Nvidia and AMD [6]. - Experts have expressed concerns that current valuations of AI companies exhibit characteristics reminiscent of the late 1990s internet bubble, with stock price increases far exceeding actual profit expectations [6]. - The Philadelphia Semiconductor Index's forward P/E ratio is currently close to 28 times, compared to its five-year average of less than 22 times, indicating heightened valuation concerns [6]. Investor Sentiment - Analysts suggest that the recent market volatility is not necessarily indicative of a bubble burst but rather a sign of valuation fatigue, where investors are reluctant to pay high premiums for AI returns that have yet to materialize [7]. - OpenAI's CFO sparked controversy with comments suggesting the need for government guarantees for infrastructure loans, which led to significant market reactions and further scrutiny of AI companies' funding situations [8][9]. Industry Dynamics - The AI investment cycle is under close observation for risk signals, with large investments seen as both a vote of confidence in downstream profitability and a potential cycle of funding to maintain chip demand [9].