Current Valuation of US Stock Market Reaches Historical High, Surpassing Peak of 2000 Internet Bubble and Pre-1929 Great Depression
Multiple valuation metrics, such as the Shiller CAPE ratio, have reached new highs, with market concentration and profit premiums at extreme levels.
Mechanically, funds continue to flow into overvalued tech and growth stocks, while passive investment in indices further amplifies the weight effect. Leaders like the Magnificent 7 benefit from capital siphoning, while traditional value stocks and small caps are pressured by relative valuation compression.
Source: Public Information
ABAB AI Insight
The current extreme valuation of the US stock market is primarily driven by a few giants propelled by AI narratives, similar to the "new economy" premium during the 2000 internet bubble and the leverage and confidence expansion seen before the 1929 speculative frenzy.
In terms of capital flow, index funds and passive capital automatically allocate significant funds to the highest market cap companies, motivated by the pursuit of recent excess returns, leading to a very narrow market breadth where a few companies account for over 30% of the S&P 500 weight.
Similar cases include the valuation before the Nasdaq bubble burst in March 2000 and the crash following the Dow peak in September 1929; the current US stock market is at a stage of new highs in AI-driven concentration and potential correction risks.
Essentially, this reflects capital concentration: the stock market has shifted from equilibrium pricing to an extreme winner-takes-all scenario, driven by the rise of passive investment and narrative influence, allowing top companies to gain excessive pricing power while also accumulating systemic fragility.
ABAB News · Law of Cognition
The higher the valuation, the more compelling the story; the bigger the bubble, the more painful the burst.
Historical highest valuations have never been a reason to buy, but rather a risk alert.
Excellent investors remain clear-headed during madness, while ordinary investors rush in the most during craziness.