Economic and Political Insights

Economic and Political Insights

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A Statistically Well-Behaved Transformation of P/E for Growth–Value Inference

Why inference on P/E fails for a classical testing method — and what changes when we test valuation on a stable scale or use a non-parametric test.

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David Bernstein
Oct 18, 2025
∙ Paid

Abstract: This note examines whether large cap growth and value portfolios differ in valuation when measured using the conventional P/E ratio versus a modified statistic that is always defined and statistically well-behaved. The two portfolios are constructed from the top 25 constituents of VOOG and VOOV, respectively. The analysis presented here involv…

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