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Jefferies

May 15, 2026

Japan: Repricing of Risk

Market ReportEquitiesConsumer DiscretionaryIndustrials

Japan's current risk rally is historically stretched, with record correlation between high-risk and momentum styles driven by AI concentration. Investors are advised to pivot toward earnings-backed, low-volatility momentum to protect against a potential style unwind.

Key Takeaways

  • 1.Japan is experiencing an unusually steep and potentially stretched risk rally, with the current 13-month cycle delivering a 78% US$ total return.
  • 2.The correlation between momentum and high-risk styles has surged to a record high of 0.9, making momentum vulnerable to sharp unwinds.
  • 3.AI concentration is distorting traditional style dynamics, accounting for 40% of the high-risk basket and 89% of its returns this year.

Table of Contents

  • Japan: The mother of all risk rallies
  • High-risk: Growing AI concentration risk
  • High-risk momentum stocks at risk
  • Dislocation in the conventional style dynamics
  • High-risk: Overlap with value at historical lows
  • Momentum – Overlap with high-risk near record highs
  • Screen - Focus on risk-adjusted, earnings-backed momentum

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Authors

Shrikant KaleDesh PeramunetillekeDaesun Song

Securities

9983.TMitsubishiShin-Etsu Chemical7741

Themes

AI Concentration RiskStyle Correlation ReversalEarnings-Backed Momentum

Regions

Asia PacificJapan