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低炭素移行開示は株価暴落リスクを緩和するか？中国からの証拠

Does Low-Carbon Transition Disclosure Alleviate Stock Price Crash Risks? Evidence from China (原題)

Feng Zhao, Xingchao Wang, Jiatong Jiang, Qi Liu, Chen Gu

Emerging Markets Finance and Trade📚 査読済 / ジャーナル2026-10-20#開示インフラOrigin: CN経営インパクト: 資金調達対象セクター: cross_sector
DOI: 10.1080/1540496x.2026.2689021
原典: https://doi.org/10.1080/1540496x.2026.2689021

🤖 gxceed AI 要約

日本語

中国A株の汚染集約産業企業を対象に、年報MD&Aから低炭素移行開示（LCTD）指標を構築し、株価暴落リスクとの関係を検証した。LCTDが高い企業ほどその後の暴落リスクが有意に低く、媒体報道やアナリスト追随が多い企業で効果が顕著だった。情報非対称性の低減を通じ、信頼性ある移行開示が低炭素移行期の市場安定に寄与することを示唆する。

English

Using Chinese A-share firms in pollution-intensive industries (2008–2020), the authors build a firm-level low-carbon transition disclosure (LCTD) measure from annual report MD&A text. Higher LCTD is associated with significantly lower subsequent stock price crash risk, robust to alternative measures. The effect is stronger with greater media coverage and analyst following, consistent with disclosure reducing information asymmetry and hoarded bad news.

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

中国の移行開示と市場安定性の実証は、SSBJ基準や有報での気候関連開示拡大を進める日本企業・投資家にとって、開示の資本市場効果を裏付ける参照材料となる。特にMD&Aベースの移行開示指標は、統合報告書での記述開示の質的評価に応用可能。

In the global GX context

Adds emerging-market evidence to the global debate on whether transition-related disclosure (TCFD/ISSB-aligned) reduces information asymmetry and stabilizes markets, complementing CSRD and SEC climate disclosure discussions with a crash-risk lens.

👥 読者別の含意

🔬研究者:Provides a replicable MD&A-based transition disclosure measure and crash-risk evidence from an emerging market.

🏢実務担当者:Suggests that substantive transition disclosure in narrative sections may lower perceived downside risk and support investor confidence.

🏛政策担当者:Supports mandating credible transition disclosure as a market-stability tool during decarbonization.

📄 Abstract（原文）

We examine whether firms’ low-carbon transition disclosure (LCTD) is associated with stock price crash risk in an emerging-market context. Using a sample of Chinese A-share firms in pollution-intensive industries from 2008 to 2020, we construct a firm-level measure of LCTD based on the MD&A sections of annual reports. This measure captures firm-specific transition-related communication beyond broad ESG classifications. We find that firms with higher levels of LCTD exhibit significantly lower subsequent stock price crash risk. The result is robust to alternative measures and model specifications. Further analyses show that the negative association is more pronounced for firms with greater media coverage and analyst following, consistent with disclosure reducing information asymmetry and limiting the accumulation of undisclosed negative information. Overall, the findings suggest that credible transition-related disclosure is associated with greater market stability during the low-carbon transition.

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