BlockBeats News, May 15th. The valuation of the U.S. stock market continued to rise, with the Shiller P/E Ratio reaching a new high of 42.18, approaching the historical peak of 44.19 during the 1999 Internet bubble.

This ratio, based on smoothed long-term earnings, is used to measure the overall market valuation level. Currently, driven by the artificial intelligence sector, U.S. stocks have reached one of the most expensive ranges in the past 25 years.

Analysts point out that although high valuation itself does not directly indicate an imminent market downturn, it significantly increases sensitivity to earnings and macro data "margin of safety." Once there is a slight underperformance in the fundamentals, the market may amplify its volatility response.

Historical comparisons show that after the burst of the 2000 Internet bubble, the S&P 500 index fell by about 50% in two years and did not return to its previous high until 2007.

The report also mentioned that under the current valuation structure, non-cash flow assets such as Bitcoin appear "cheaper" in terms of relative pricing dimensions, which may attract some asset reallocation inflows in the event of changes in risk preference in the future, but the relevant trends remain highly uncertain.

Overall, the current market environment is more akin to a fragile equilibrium stage driven by high valuation, rather than a low-valuation range supported by broad fundamentals.