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Pricing and Hedging Discount Bond Options in the Presence of Model Risk

Author

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  • F. S. Lhabitant
  • C. Martini
  • A. Reghai

Abstract

This paper focuses on pricing and hedging options on a zero-coupon bond in a Heath—Jarrow—Morton (1992) framework when the value and/or functional form of forward interest rates volatility is unknown, but is assumed to lie between two fixed values. Due to the link existing between the drift and the diffusion coefficients of the forward rates in the Heath, Jarrow and Morton framework, this is equivalent to hedging and pricing the option when the underlying interest rate model is unknown. We show that a continuous range of option prices consistent with no arbitrage exist. This range is bounded by the smallest upper-hedging strategy and the largest lower-hedging strategy prices, which are characterized as the solutions of two non—linear partial differential equations. We also discuss several pricing and hedging illustrations.

Suggested Citation

  • F. S. Lhabitant & C. Martini & A. Reghai, 2000. "Pricing and Hedging Discount Bond Options in the Presence of Model Risk," Review of Finance, European Finance Association, vol. 4(1), pages 69-90.
    • Handle: RePEc:oup:revfin:v:4:y:2000:i:1:p:69-90.
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    File URL: http://hdl.handle.net/10.1023/A:1009826128801
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    Cited by:

    1. Schepper, Ann De & Heijnen, Bart, 2007. "Distribution-free option pricing," Insurance: Mathematics and Economics, Elsevier, vol. 40(2), pages 179-199, March.

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