ConvexPi

Value (HML)

⚠ weakened
Value· Price data

High-minus-low book-to-market: value stocks (high B/M) outperformed growth stocks. Core to the Fama-French three-factor model. The premium has significantly weakened post-publication, particularly over 2007–2020, though debate continues about whether the anomaly is risk or mispricing.

IS Sharpe (1926–1991)

0.465

+4.3% p.a.

OOS Sharpe (1992–2026)

0.254

+2.9% p.a.

Sharpe decay

+45.4%

(IS − OOS) / |IS|

IS vol

9.2%

annualized

Cumulative return (last 40 years, monthly)

+81%
1986-012026-04

Publication details

PaperFama & French (1992, 1993)
JournalJournal of Finance
Publication year1992
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