美元流动性收紧，美股风险积聚

Group 1 - The core viewpoint of the article is that economic downturn and tightening dollar liquidity in the short and medium term may drive down U.S. stocks while increasing the risk of asset performance divergence [1] - The recent rise in U.S. stocks is attributed to the "Trump put" and "Fed put," where market participants expect policy easing in response to economic pressures [2][3] - The strong corporate earnings growth has been a significant foundation for the recent rise in U.S. stocks, with S&P 500 companies' profits growing approximately 12% year-on-year in Q2 2025 [4] Group 2 - U.S. stocks face significant pressure from three main factors: increasing economic downturn risks, high valuation pressures, and concentrated earnings among a few sectors [5][11] - The U.S. economy is showing signs of slowing down, with the unemployment rate rising to 4.3% in August 2025 and non-farm payrolls adding only 22,000 jobs, far below expectations [5][10] - The S&P 500 index's expected P/E ratio is around 22.5, significantly above the historical average of 16.8 since 2000, indicating high valuation concerns [5][11] Group 3 - The relationship between dollar liquidity and U.S. stocks is expected to revert to historical narratives, with tightening liquidity potentially leading to declines in stock prices [12][18] - The current market optimism is based on conflicting expectations of stable corporate earnings and Fed liquidity easing, which cannot coexist [18] - The tightening of dollar liquidity is likely to increase the risk of divergence in asset performance, particularly affecting assets that previously benefited from liquidity [18]