美股涨势看似不可阻挡？小心！多个危险信号暗示反转或将到来

Core Viewpoint - The current rally in the U.S. stock market appears more fragile than it seems, with multiple indicators suggesting caution for investors [2][3]. Market Dynamics - The U.S. stock market has experienced significant volatility this year, influenced by trade wars, geopolitical conflicts, concerns over the weaponization of the dollar, and a surge in spending in the AI sector [2]. - Despite the turbulence, the stock market is nearing historical highs, with a parabolic rise observed over the long term [3]. Investor Sentiment - Investors are advised to be cautious, as signs of a market top may be forming, which typically is a prolonged process compared to market bottoms [3]. - There is a notable "negative divergence" in the market, where the number of stocks hitting new lows in the S&P 500 is increasing even as prices rise, indicating deteriorating overall market health [4]. Historical Context - The current extreme levels of negative divergence are reminiscent of conditions seen before significant market corrections in 1998 and the tech bubble burst in 2000 [4]. - The U.S. stock market's valuation metrics are at their highest recorded levels in a century, suggesting a potential decline of 30% to 50% could occur, similar to past instances of high valuations [4]. Valuation Concerns - The average hours of work required to purchase a contract of the S&P 500 has risen to over 200 hours, compared to 140 hours before the pandemic and just above 100 hours at the 2000 market peak [5]. - The proportion of stocks held by U.S. households in their financial assets is at an all-time high, which often leads to unsustainable valuation levels and prolonged periods of low returns [5]. Cautionary Signals - While the market is currently buoyed by optimism, underlying warning signs suggest a potential sudden reversal could occur [5]. - The eventual catalyst for any market downturn remains uncertain, but investors who have taken precautions for their portfolios may find themselves at a significant advantage when it happens [5].