高盛交易员：美股涨势"极端窄化"，七巨头屡创新高但整体跑输全球市场

Core Insights - The U.S. stock market is experiencing extreme divergence, with the tech giants reaching new highs while the overall market has underperformed globally for 18 consecutive months [1][5][6] - The concentration of gains among the top seven tech companies (Mag-7) is at an all-time high, indicating a narrowing market breadth [6][10] - Despite strong performance from U.S. tech companies, the overall market has not generated excess returns compared to global markets, influenced by a weakening dollar and recovery in non-U.S. markets [5][11] Market Performance - The Nasdaq index has recorded a 5% increase for two consecutive months, but market concentration has reached extreme levels, with the ratio of advancing to declining stocks in the S&P 500 hitting a historical low [3][10] - The top seven tech stocks have significantly outperformed the remaining 493 stocks in the S&P 500, which have remained relatively flat [6][9] Investment Trends - Continuous AI investments by major tech companies are a key factor supporting their stock performance, with companies like Amazon, Google, and Microsoft showing strong growth in their cloud businesses [9] - Meta is facing scrutiny regarding its investment returns, yet it is unlikely to reduce spending due to competitive pressures, as evidenced by its record demand for a $125 billion bond issuance [9] Global Market Dynamics - European markets are undergoing significant changes, with mergers in the satellite industry and ongoing consolidation in the telecommunications sector, indicating a shift towards traditional industries benefiting from AI efficiencies [11][12] - The Asian market outlook remains positive, supported by trends in the dollar and revised GDP expectations for China [14][15]