投資家は異なる種類の気候リスク開示を価格評価するのか：中国上場企業からの証拠
Do Investors Price Different Types of Climate Risk Disclosure? Evidence from Chinese Listed Firms (原題)
Ying-Si Li, Yu-Hao Cui, Xiang-Xu Chang
🤖 gxceed AI 要約
日本語
中国A株上場企業の2007〜2024年の年次報告書と財務データを用い、気候リスク開示の種類別にTobin's Qへの評価効果を推定した。気候リスク開示が多い企業ほどTobin's Qは低いが、割引は慢性物理リスクで最も安定的に現れ、移行リスクは弱い補助的証拠にとどまり、急性物理リスクは安定した負の価格評価を示さなかった。慢性物理リスク開示はその後のR&D強度や資産減損率の上昇を予測し、固定資産比率が高い企業で割引が強い。資本市場は資産固定化や長期調整コストを反映する慢性物理リスクをより重視していると解釈できる。
English
Using annual report texts and financials for Chinese A-share firms (2007–2024), this paper estimates how different types of climate risk disclosure are priced into Tobin's Q. Higher overall disclosure is associated with lower valuation, but the stable discount is concentrated in chronic physical risk; transition risk offers weaker evidence and acute physical risk shows no stable negative pricing. Chronic physical risk disclosure predicts higher subsequent R&D intensity and asset impairment, with stronger discounts for fixed-asset-heavy firms, suggesting markets weight persistent exposure and asset lock-in.
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
SSBJ基準の適用と有報での気候関連開示義務化が進む日本では、開示の「種類」によって投資家の評価が異なるという本論文の知見は、企業が慢性物理リスクをどう記述・定量化すべきかを考える上で実務的に有用。TCFD提言に基づくシナリオ分析の深度が企業価値評価に影響しうることを示唆する。
In the global GX context
As ISSB/IFRS S2 and CSRD push toward granular climate disclosure, this paper shows investors do not price all climate risk types equally—chronic physical risk carries the most consistent valuation discount. It adds empirical evidence from China to the global disclosure-pricing literature and informs how TCFD-aligned scenario analysis and physical risk quantification should be structured to be decision-useful for capital markets.
👥 読者別の含意
🔬研究者:気候リスク開示の種類別評価という新たな実証視点を提供し、開示の質と企業価値の関係を分析する際の参照枠となる。
🏢実務担当者:慢性物理リスクの開示が企業価値に負の影響を与えうるため、開示内容の設計や投資家向け説明の際にリスクの種類と長期影響を意識すべき。
🏛政策担当者:気候関連開示の義務化において、リスク類型ごとの情報の意思決定有用性を考慮した開示枠組みの設計が重要であることを示唆する。
📄 Abstract（原文）
Do investors price all climate risk disclosures in the same way? Using annual report texts and financial data for Chinese A-share listed firms from 2007 to 2024, this paper estimates the valuation effect of different types of climate risk disclosures on Tobin’s Q. We decompose aggregate climate risk into transition risk, acute physical risk, and chronic physical risk, and use within-firm changes in disclosure while controlling for firm and year fixed effects. Firms with higher climate risk disclosure have lower Tobin’s Q, but this valuation discount is not driven equally by all risk components. The most stable discount is concentrated in chronic physical risk; transition risk provides weaker auxiliary evidence, while acute physical risk does not exhibit stable negative pricing. Further evidence shows that chronic physical risk disclosure predicts higher subsequent R&D intensity and asset impairment ratio. Its negative valuation effect is stronger among firms with a higher fixed asset ratio, and weaker among firms with higher current asset and accounts receivable ratios. High-intensity chronic physical risk disclosure also generates a larger discount and predicts Tobin’s Q within the subsequent one‑to‑two‑year window. The fixed-effects evidence supports the interpretation that capital markets place greater weight on chronic physical risk, which captures persistent exposure, asset lock-in, and long-term adjustment costs.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://ccsenet.org/journal/index.php/ijef/article/download/0/0/53911/58934first seen 2026-11-04 05:45:14 · last seen 2026-11-05 06:10:19
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