因子投資とESGスコア：業種バイアス補正時のリスク・リターン
Factor investing and ESG scores: risk-return when industry bias is corrected (原題)
Paolo Matteucci, Daniela Venanzi
🤖 gxceed AI 要約
日本語
本研究は、国際株式市場においてESGスコアを業種調整することで、バリュー・サイズ・モメンタム因子ポートフォリオのリスク・リターン特性がどう変化するかを検証。2001年から2023年までの6地域データを用い、業種調整ESG戦略は平均リターンを改善しないが、特に先進国でボラティリティを低下させることを発見。ESG統合はプレミアムではなくリスク低減に寄与する。
English
This study examines whether industry-adjusted ESG scores alter the risk-return profile of factor-based investment strategies across six equity regions from 2001 to 2023. It finds that industry-adjusted ESG strategies do not improve average returns but often reduce volatility, especially in developed markets. ESG integration reshapes portfolio composition and reduces risk rather than generating a distinct return premium.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の機関投資家や運用会社にとって、ESGスコアの業種調整がポートフォリオのリスク管理に与える影響は重要。SSBJ開示やスチュワードシップ活動の実務に示唆を与える。
In the global GX context
This paper contributes to the global debate on ESG pricing by isolating the ESG signal from industry tilts, offering insights for sustainable factor strategies and ESG-based performance evaluation under frameworks like ISSB and SFDR.
👥 読者別の含意
🔬研究者:ESGスコアの業種調整が因子投資のリスク・リターンに与える影響についての実証的知見。
🏢実務担当者:ESG統合戦略の設計やリスク管理に活用できる業種調整ESGスコアの実践的示唆。
📄 Abstract（原文）
This paper examines whether correcting ESG scores for industry affiliation alters the risk–return profile of factor-based investment strategies in international equity markets. Value, size, and momentum portfolios are constructed for six equity regions (the United States, the United Kingdom, Continental Europe, Japan, Canada, and Emerging Markets) over the period June 2001–June 2023, and portfolios based on conventional factor rankings are compared with portfolios that combine these rankings with an industry-relative ESG score designed to mitigate the sectoral component embedded in raw ESG ratings. The contribution of the study is to isolate the ESG signal from industry tilts and to assess its effect on portfolio allocation, volatility, and exposure to global macroeconomic risk – an interaction that the literature on ESG pricing and on factor investing has so far examined only separately. Using descriptive portfolio evidence and two-step cross-sectional asset-pricing tests, the analysis finds that industry-adjusted ESG strategies do not systematically improve average returns relative to their non-ESG counterparts, but are frequently associated with lower return volatility, particularly in developed markets. Industrial production growth and the term spread are priced sources of systematic risk in both samples, whereas the pricing of unexpected inflation, the default spread, and the Environmental Performance Index differs across the two designs. Overall, once industry effects are neutralized, ESG integration does not generate a distinct return premium but instead reshapes portfolio composition and reduces risk, with practical implications for the design of sustainable factor strategies and for the interpretation of ESG-based performance evidence.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.ribaf.2026.103586first seen 2026-08-30 04:46:34
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