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Catastrophe risk with global climate change determines the price of catastrophe equity puts

Author

Listed:
  • Chuang, Ming-Che
  • Huang, Hong-Chih
  • Huang, Shih-Feng
  • Lin, Shih-Kuei

Abstract

A growing frequency of natural catastrophes due to global climate change has confronted insurance companies with massive compensation claims and substantial stock price risk. The catastrophe equity put options provide a means to manage such risks. As stock markets usually exhibit volatility clustering, volatility may increase significantly. This article establishes a GARCH model for global climate change to characterize the dynamic process of insurance companies’ stock prices. The incomplete market requires an Esscher transform, a specific risk-neutral probability measure that serves to price the CatEPut. The empirical analysis identifies that the inverse-Gaussian distribution for each catastrophe loss and the random walk with positive drift for the arrival rate of catastrophes perform the best in terms of goodness-of-fit. The sensitivity analysis results illustrate that global climate change, the catastrophe intensity, and the systematic/unsystematic catastrophe risk constitute important factors for determining the CatEPut price.

Suggested Citation

  • Chuang, Ming-Che & Huang, Hong-Chih & Huang, Shih-Feng & Lin, Shih-Kuei, 2025. "Catastrophe risk with global climate change determines the price of catastrophe equity puts," The North American Journal of Economics and Finance, Elsevier, vol. 80(C).
    • Handle: RePEc:eee:ecofin:v:80:y:2025:i:c:s1062940825001135
    DOI: 10.1016/j.najef.2025.102473
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    JEL classification:

    • C15 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Statistical Simulation Methods: General
    • C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
    • G13 - Financial Economics - - General Financial Markets - - - Contingent Pricing; Futures Pricing

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