Carbon Risk Without a Stable Premium: Nonlinear and State-Dependent Evidence from European ESG Leaders
安定プレミアムのない炭素リスク：欧州ESGリーダーからの非線形かつ状態依存の証拠 (AI 翻訳)
Eleonora Salzmann
🤖 gxceed AI 要約
日本語
本研究は2018～2024年の欧州ESGリーダー238社の四半期パネルデータを用い、炭素排出量が株式リターンに与える影響を検証。線形モデルでは有意なリターンプレミアムは確認されず、非線形性と状態依存性が示された。特に企業の論争リスクが最も頑健なサステナビリティ指標であった。炭素リスクの価格付けは複雑であり、単純な線形関係では捉えられないことを示唆。
English
Using a panel of 238 European ESG leaders from 2018-2024, this study finds no stable return premium for carbon exposure in linear models. However, nonlinear and state-dependent effects emerge, with controversy risk proving the most robust sustainability predictor. The results suggest carbon pricing is context-dependent and not a simple linear factor.
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
この研究は欧州のデータに基づくが、日本のSSBJや有報での気候関連開示において、炭素リスクが常にプレミアムに反映されるとは限らない点を示唆する。企業のESGスコアや論争リスクも同時に考慮する必要性を強調している。
In the global GX context
This European evidence challenges the assumption of a uniform carbon risk premium, which is relevant for global disclosure frameworks (TCFD, ISSB) where carbon metrics are key. It suggests that investors and regulators should look beyond linear carbon pricing and consider controversies and nonlinear effects.
👥 読者別の含意
🔬研究者:Provides robust evidence on nonlinearity and state-dependence of carbon risk pricing, useful for further empirical work.
🏢実務担当者:Highlights that carbon exposure alone may not predict returns; controversy risk is more influential for ESG investors.
🏛政策担当者:Suggests that carbon disclosure alone may not capture all sustainability risks; controversy screening is important.
📄 Abstract（原文）
Despite the economic relevance of climate-transition risk, firm-level carbon exposure often fails to appear as a robustly priced factor when ESG measures and sustainability shocks are conflated. This study examines whether carbon exposure is conditionally priced in European equity returns using a strongly balanced quarterly panel of 238 firms from the MSCI Europe ESG Leaders universe (2018–2024). Total greenhouse gas emissions act as a proxy for carbon exposure, mapped to within-year percentiles and standardized by sector-year. Regressions control for ESG scores and controversies and include firm and quarter fixed effects with firm-clustered, dependence-robust standard errors. The linear carbon coefficient is small and statistically indistinguishable from zero, indicating no stable return premium from within-firm changes in carbon exposure. Functional-form tests reject linearity: quadratic and quintile specifications reveal curvature and a non-monotonic pattern, with return differences concentrated in the middle of the carbon distribution. Conditioning on macro-financial stress, measured by the ECB Composite Indicator of Systemic Stress, yields limited evidence of a uniform carbon penalty. However, high-controversy states are associated with lower returns, while ESG scores show negative associations under dependence-robust inference. Overall, carbon-related pricing appears to be nonlinear and state-dependent, whereas controversy risk is the most robust sustainability predictor of returns.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://www.mdpi.com/2227-9091/14/2/41/pdf?version=1772076797first seen 2026-07-18 08:16:27
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