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Why Does P/E Vary So Much Across Stocks?

Steve LeCompte | | Posted in: Animal Spirits, Fundamental Valuation

What variables drive differences in price-to-earnings ratios (P/E) across U.S. stocks? In the September 2025 revision of their paper entitled "The Cross-section of Subjective Expectations: Understanding Prices and Anomalies", Ricardo Delao, Xiao Han and Sean Myers analyze cross-sectional P/E differences of U.S. common stocks by comparing:

  • Professional forecasts of earnings growth, return and P/E over the next four years.
  • Actual (realized) earnings growth, returns and P/E over the next four years.

Using the specified forecasted and actual data during 1999 (1982 for some inputs) through 2020, they find that:

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