Markov Switching Model Analysis of Implied Volatility for Market Indexes with Applications to S&P 500 and DAX

Luca Di Persio and Samuele Vettori

Journal of Mathematics, 2014, vol. 2014, 1-17

Abstract:

We adopt a regime switching approach to study concrete financial time series with particular emphasis on their volatility characteristics considered in a space-time setting. In particular the volatility parameter is treated as an unobserved state variable whose value in time is given as the outcome of an unobserved, discrete-time and discrete-state, stochastic process represented by a suitable Markov chain. We will take into account two different approaches for inference on Markov switching models, namely, the classical approach based on the maximum likelihood techniques and the Bayesian inference method realized through a Gibbs sampling procedure. Then the classical approach shall be tested on data taken from the Standard & Poor’s 500 and the Deutsche Aktien Index series of returns in different time periods. Computations are given for a four-state switching model and obtained numerical results are put beside by explanatory graphs which report the outcomes obtained exploiting both smoothing and filtering algorithms used in the estimation/calibration procedures we proposed to infer on the switching model parameters.

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jjmath:753852

DOI: 10.1155/2014/753852

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