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Measuring climate-related and environmental risks for equities.

Emese Lazar1, Jingqi Pan1, Shixuan Wang2

  • 1ICMA Centre, Henley Business School, University of Reading, Reading, RG6 6DL, UK.

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|December 19, 2024
PubMed
Summary
This summary is machine-generated.

New climate Value-at-Risk (VaR) and climate Expected Shortfall (ES) measures reveal how environmental scores impact investment risk across sectors. The Energy sector gains most from environmental improvements, while Health Care is least cost-effective in risk reduction.

Keywords:
Climate-related and environmental risksEnvironmental scoreExpected shortfallValue-at-Risk

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Area of Science:

  • Environmental Finance
  • Investment Risk Management
  • Climate Change Economics

Background:

  • Growing concern among financial regulators and investors regarding climate change impacts on investments.
  • Climate-related and environmental risks affect all economic sectors, not just energy.
  • Need for robust metrics to quantify climate risk exposure in investment portfolios.

Purpose of the Study:

  • Introduce novel climate Value-at-Risk (VaR) and climate Expected Shortfall (ES) metrics.
  • Quantify climate and environmental risks using environmental scores as proxies for transition risk.
  • Identify sectors most and least affected by climate and environmental risk factors.

Main Methods:

  • Development and application of climate VaR and climate ES measures.
  • Analysis of the ratio of climate VaR and ES to total risk across equity sectors.
  • Comparison of risk sensitivities at various significance levels and using different risk measurements.

Main Results:

  • Significant heterogeneity exists in sector-specific sensitivity to climate and environmental risks.
  • The Health Care sector demonstrates the lowest cost-effectiveness in mitigating climate-related risks.
  • The Energy sector shows the greatest potential benefit from enhancing firms' environmental scores.

Conclusions:

  • Climate and environmental risks are pervasive across all investment sectors, necessitating tailored risk management strategies.
  • The proposed climate VaR and ES metrics provide valuable insights for investors and regulators.
  • Sector-specific analysis is crucial for understanding and managing climate-related investment risks effectively.