“股票盛世”！全球股市连续第3年“两位数上涨”

Core Viewpoint - The global stock market is expected to achieve double-digit growth for the third consecutive year in 2025, despite uncertainties from Trump's trade policies and concerns over AI sector bubbles. The MSCI global index has risen over 20% this year, outperforming most analysts' expectations [1]. Group 1: US Market Performance - After a significant downturn at the beginning of the year, the US stock market rebounded strongly, with the S&P 500 index showing an annual increase of nearly 16.5%. The release of a large language model by DeepSeek shocked Silicon Valley and led to a drop in tech stocks. Trump's announcement of large tariffs in April triggered sell-offs in stocks, bonds, and the dollar, but strong corporate earnings, expectations of Fed rate cuts, and better-than-expected economic growth quickly brought investors back to the market [2]. - Despite strong performance in the US market, other markets such as China, Japan, the UK, and Germany have outperformed the S&P 500 this year, with emerging market stock indices also performing better than US stocks. Investors sought more diversified allocations after experiencing volatility in the US market at the beginning of the year [4]. Group 2: Economic Resilience and Market Support - The resilience of the US economy, combined with the clear outlook for a shift in Fed monetary policy towards rate cuts, has been a core support for market performance, driving significant capital inflows into the stock market and reinforcing long-term bets on AI potential. Additionally, better-than-expected US economic growth data has alleviated market anxieties and boosted risk appetite [8]. Group 3: Valuation Concerns - Market valuations are significantly above historical averages, with analysts warning that the current rally, driven by tech giants, may not be sustainable. The Shiller cyclically adjusted price-to-earnings ratio for the S&P 500 is nearing 40 times, the second highest level since the early 2000s internet bubble [6][10]. - Following such a strong rally, market sentiment has begun to turn cautious, with some investors and analysts warning about the sustainability of the current market conditions. The rally has shown significant structural concentration and valuation divergence, primarily driven by a few tech giants, leading to a substantial deviation from long-term historical averages [10]. Group 4: Concentration Risk - The current market rally, driven by a small number of stocks, is accumulating structural risks. The so-called "seven giants" of US tech have reached about a quarter of the MSCI global developed market stock index, creating a deep binding of global index movements to the performance of these individual giants, thereby increasing overall market fragility [12]. - The increasing concentration trend in the market is prompting a deep examination of the merger frenzy in the AI sector. This trend has created a complex and interdependent financial network, exemplified by OpenAI, which not only holds stakes in key infrastructure suppliers but also receives substantial investments from other industry participants, potentially amplifying systemic risks [14].