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A semiparametric factor model for implied volatility surface dynamics

A semiparametric factor model for implied volatility surface dynamics We propose a semiparametric factor model, which approximates the implied volatility surface (IVS) in a finite dimensional function space. Unlike standard principal component approaches typically used to reduce complexity, our approach is tailored to the degenerated design of IVS data. In particular, we only fit in the local neighborhood of the design points by exploiting the expiry effect present in option data. Using DAX index option data, we estimate the nonparametric components and a low-dimensional time series of latent factors. The modeling approach is completed by studying vector autoregressive models fitted to the latent factors. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Financial Econometrics Oxford University Press

A semiparametric factor model for implied volatility surface dynamics

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References (55)

Publisher
Oxford University Press
Copyright
Copyright © The Author 2007. Published by Oxford University Press.
Subject
Articles
ISSN
1479-8409
eISSN
1479-8417
DOI
10.1093/jjfinec/nbm005
Publisher site
See Article on Publisher Site

Abstract

We propose a semiparametric factor model, which approximates the implied volatility surface (IVS) in a finite dimensional function space. Unlike standard principal component approaches typically used to reduce complexity, our approach is tailored to the degenerated design of IVS data. In particular, we only fit in the local neighborhood of the design points by exploiting the expiry effect present in option data. Using DAX index option data, we estimate the nonparametric components and a low-dimensional time series of latent factors. The modeling approach is completed by studying vector autoregressive models fitted to the latent factors.

Journal

Journal of Financial EconometricsOxford University Press

Published: Mar 12, 2007

Keywords: functional principal component analysis implied volatility surface semiparametric factor models

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