A Multifactor Spot Rate Model for the Pricing of Interest Rate Derivatives

Sandra Peterson, Richard C. Stapleton and Marti G. Subrahmanyam

Journal of Financial and Quantitative Analysis, 2003, vol. 38, issue 4, 847-880

Abstract: We propose a multifactor model in which the spot rate, LIBOR, follows a lognormal process, with a stochastic conditional mean, under the risk-neutral measure. In addition to the spot rate factor, the second factor is related to the premium of the first futures rate over the spot LIBOR. Similarly, the third factor is related to the premium of the second futures rate over the first futures rate. We calibrate the model to the initial term structure of futures rates and to the implied volatilities of interest rate caplets. We then apply the model to price interest rate derivatives such as European and Bermudan-style swaptions, and yieldspread options. The model can be employed to price more complex interest rate derivatives such as path-dependent derivatives or multi-currency-dependent derivatives because of its Markovian property.

Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:cup:jfinqa:v:38:y:2003:i:04:p:847-880_00

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