The Cox–Ingersoll–Ross Model

Gennady A. Medvedev ()
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Gennady A. Medvedev: Belarusian State University

Chapter Chapter 4 in Yield Curves and Forward Curves for Diffusion Models of Short Rates, 2019, pp 41-69 from Springer

Abstract: Abstract The investigation of the affine term structure of interest rates started in Chap. 3 continues with the use of yield curvesYield curve and forward curvesForward curve in the case when the Cox–Ingersoll–Ross model is used. Not only single-factor, but multifactor modelsMultifactor model are analyzed. The yield curves and forward curves use the duration of the risk-free rate as a temporary variable. A numerical comparison of the results based on the Vasiček and Cox–Ingersoll–Ross models is carried out. The Longstaff–Schwartz modelLongstaff–Schwartz model is considered both in the space of latent transient states and in the space of observable (or estimated) state variablesState variable . Analytical expressions for yield curvesYield curve to maturity and forward curves are obtained in both cases. An extension of the model to an arbitrary dimension of the state spaceState space is proposed. Within the framework of this extension, a method is proposed for obtaining analytical solutions of equations with respect to the functions of the term structure of interest rates, when the initial equations for the dynamics of the short-term interest rate lead to non-linear systems of Riccati equations Riccati equation with respect to these functions, which do not allow an analytical solution to be obtained by known methods. This method is based on the obvious assertion that if the process of a short-term interest rate is specified, then the corresponding term structure of yield does not depend on how the space of variables of the state of the financial marketState of financial market is described. A numerical example is given.

Keywords: Term structure of interest rates; Short-term interest rate; Yield interest rates; Affine model; Yield curve; Forward curve; Vasiček model; Cox–Ingersoll–Ross model; Longstaff–Schwartz model; Riccati system of equations (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-030-15500-1_4

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DOI: 10.1007/978-3-030-15500-1_4

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