Modelling Stochastic Volatility with Leverage and Jumps: A Simulated Maximum Likelihood Approach via Particle Filtering
Sheheryar Malik and
Michael K. Pitt
No 271302, Economic Research Papers from University of Warwick - Department of Economics
Abstract:
In this paper we provide a unified methodology in order to conduct likelihood-based inference on the unknown parameters of a general class of discrete-time stochastic volatility models, characterized by both a leverage effect and jumps in returns. Given the nonlinear/non-Gaussian state-space form, approximating the likelihood for the parameters is conducted with output generated by the particle filter. Methods are employed to ensure that the approximating likelihood is continuous as a function of the unknown parameters thus enabling the use of Newton-Raphson type maximization algorithms. Our approach is robust and efficient relative to alternative Markov Chain Monte Carlo schemes employed in such contexts. In addition it provides a feasible basis for undertaking the non-trivial task of model comparison. The technique is applied to daily returns data for various stock price indices. We find strong evidence in favour of a leverage effect in all cases. Jumps are an important component in two out of the four series we consider.
Keywords: Financial; Economics (search for similar items in EconPapers)
Pages: 29
Date: 2009-04-03
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Citations: View citations in EconPapers (3)
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Persistent link: https://EconPapers.repec.org/RePEc:ags:uwarer:271302
DOI: 10.22004/ag.econ.271302
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