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Billionaire Fisher Challenges Stock Valuation Norms
13 Dec, 2025
Summary
- Ken Fisher questions the importance of P/E ratios for stock market predictions.
- High P/E ratios do not necessarily signal an impending market downturn.
- Fisher Investments manages $295 billion in assets globally.

Veteran money manager Ken Fisher is challenging the prevailing notion that high price-to-earnings (P/E) ratios signal an imminent stock market crash. Fisher, founder of Fisher Investments, a firm managing $295 billion, asserts that historical data shows P/E ratios do not reliably predict market direction. This perspective diverges from common analyses that point to elevated P/E ratios for the S&P 500 as a warning sign.
Many market observers currently express concern, noting the S&P 500's P/E ratio exceeds its five and ten-year averages, particularly after recent strong market performance. However, Fisher contends that such valuation metrics are overemphasized and have historically proven to be poor predictors of future stock performance. His view suggests that investors focusing solely on P/E ratios may be missing opportunities or misinterpreting market signals.
Fisher's extensive experience, spanning decades and navigating numerous market cycles including booms and busts, underpins his argument. He believes valuation metrics should be considered secondary factors, offering a minor influence rather than being the decisive element in investment decisions. This contrarian stance suggests that the current market, despite high P/E ratios, may not be as precarious as some fear.




