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Does ESG Scoring Predict Lower Default Risks for Corporate Bonds in Developed Economies?

ESGスコアは先進国の社債デフォルトリスク低下を予測するか？ (AI 翻訳)

Zhen Chang

Finance & Economics📚 査読済 / ジャーナル2026-08-13#ESGOrigin: Global経営インパクト: 資金調達対象セクター: finance
DOI: 10.61173/avzp8c82
原典: https://doi.org/10.61173/avzp8c82

🤖 gxceed AI 要約

日本語

本研究は、先進国（米国、英国、ユーロ圏、日本）の社債を対象に、ESGスコアとデフォルトリスクの関連を2018年から2025年のデータで分析。MSCIとBloombergのESG評価を用い、信用スプレッドとデフォルト確率を指標に、相関分析と回帰分析を実施。結果、ESGスコアが高いほどデフォルトリスクが低く、ESGスコアは信用リスクの変動の約14.2%を説明。特に環境（E）要素の影響が大きく、ESG情報の信用リスク評価への統合の有用性を示唆。

English

This study examines the relationship between ESG scores and default risk for corporate bonds in developed economies (US, UK, Eurozone, Japan) from 2018 to 2025. Using MSCI and Bloomberg ESG ratings, credit spreads, and probability of default, the analysis finds a significant negative correlation: higher ESG scores are associated with lower default risk, explaining about 14.2% of credit risk variation. The environmental pillar has the strongest predictive influence, especially in the Eurozone and Japan. The findings support integrating ESG factors into credit risk assessment and sustainable fixed-income portfolio construction.

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

日本ではSSBJ開示基準の適用が進み、投資家のESG情報活用が重要に。本研究成果は、日本の社債市場におけるESGスコアの信用リスク評価への統合可能性を示し、機関投資家や金融機関の投資判断に示唆を与える。

In the global GX context

Globally, with ISSB and CSRD driving ESG disclosure, this study provides empirical evidence linking ESG performance to credit risk, supporting the integration of ESG factors into credit risk models and sustainable finance regulation. It adds to the literature by covering multiple developed markets and highlighting the environmental pillar's significance.

👥 読者別の含意

🔬研究者:Provides empirical evidence on ESG-credit risk link across developed markets, useful for further research on ESG integration in credit models.

🏢実務担当者:Supports incorporating ESG scores into credit risk assessment and sustainable fixed-income portfolio construction.

🏛政策担当者:Informs policy on ESG disclosure and its role in financial stability and sustainable finance regulation.

📄 Abstract（原文）

The dissertation is an investigation on whether or not increased ESG (Environmental, Social and Governance) scores will be correlated with reduced default risk of corporate bonds in developed economies. As the market of sustainable finance grows fast, and regulatory attention to ESG disclosure rises sharply, the correlation between ESG performance and credit risk is one of the most important issues to investors and policymakers. The study is on the case of corporate bonds in the United States, the United Kingdom, the Eurozone and Japan between 2018 and 2025. The quantitative methodology was chosen in terms of primary data analysis. MSCI and Bloomberg provided ESG ratings on a sample of 1,250 investment grade and highyield corporate bonds. Credit spreads and credit probability of default (PD) were used to measure default risk. The data sets were analysed with Pearson correlation, Ordinary Least Squares (OLS) regression and logistic regression to determine the predictive ability of the overall ESG scores and individual E, S and G pillars. The findings indicate that there is a statistically significant negative correlation between the ESG scores and the default risk. There were reduced credit spreads and reduced risk of default in higher ESG-rated bonds and the ESG scores accounted about 14. 2% of credit risk variation (pooled R 2 = 0.142). The environmental pillar presented the greatest predictive influence especially in Eurozone and Japan. This paper concludes that ESG scoring possesses moderate and significant predictive quality of lower default risk in developed markets of corporate bonds. Such results suggest the inclusion of ESG factors in the credit risk assessment and is applicable in practice to sustainable sustainable fixed-income portfolio construction and regulation.

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