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Multi-step double barrier options under time-varying interest rates

Author

Listed:
  • Lee, Hangsuck
  • Kye, Yisub
  • Kong, Byungdoo
  • Song, Seongjoo

Abstract

Double barrier options are popular in the over-the-counter market due to their flexible investment strategies, opportunities to capitalize on volatility, and potential for increased leverage and more significant price movements, enhancing possible payoffs by incorporating two barrier levels. Multi-step double barrier options are particularly useful since they allow investors to set the barrier levels in a flexible manner while they are computationally efficient due to the explicit pricing formulas. In our study, we propose a method for pricing multi-step double barrier options under time-varying interest rates, acknowledging the potential unrealistic nature of employing a constant interest rate in economic scenarios marked by frequent adjustments in central bank monetary policies, such as during the COVID-19 pandemic. The method we employ to introduce a time-varying feature to the interest rate entails incorporating random jumps at various time points as needed. Our setup allows us to incorporate jumps not only in the interest rate dynamics but also in the asset price, so we can utilize jumps to more comprehensively depict the random nature of underlying price movement.

Suggested Citation

  • Lee, Hangsuck & Kye, Yisub & Kong, Byungdoo & Song, Seongjoo, 2025. "Multi-step double barrier options under time-varying interest rates," The North American Journal of Economics and Finance, Elsevier, vol. 76(C).
  • Handle: RePEc:eee:ecofin:v:76:y:2025:i:c:s1062940825000129
    DOI: 10.1016/j.najef.2025.102372
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    More about this item

    Keywords

    Time-varying interest rate; Brownian motion; Piecewise constant drift; Multi-step double barrier; Esscher transform; Binomial jumps;
    All these keywords.

    JEL classification:

    • G13 - Financial Economics - - General Financial Markets - - - Contingent Pricing; Futures Pricing
    • G22 - Financial Economics - - Financial Institutions and Services - - - Insurance; Insurance Companies; Actuarial Studies

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