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A Stochastic Volatility Alternative to SABR

Published online by Cambridge University Press:  14 July 2016

L. C. G. Rogers*
Affiliation:
University of Cambridge
L. A. M. Veraart*
Affiliation:
Princeton University
*
∗ Postal address: Statistical Laboratory, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WB, UK. Email address: l.c.g.rogers@statslab.cam.ac.uk
∗∗ Current address: Institut für Stochastik, Universität Karlsruhe (TH), Kaiserstr. 89, 76133 Karlsruhe, Germany.
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Abstract

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We present two new stochastic volatility models in which option prices for European plain-vanilla options have closed-form expressions. The models are motivated by the well-known SABR model, but use modified dynamics of the underlying asset. The asset process is modelled as a product of functions of two independent stochastic processes: a Cox-Ingersoll-Ross process and a geometric Brownian motion. An application of the models to options written on foreign currencies is studied.

Information

Type
Research Article
Copyright
Copyright © Applied Probability Trust 2008