MCMC Bayesian Estimation of a Skew-GED Stochastic Volatility Model

Verfasser / Beitragende:
[Nunzio Cappuccio, Diego Lubian, Davide Raggi]
Ort, Verlag, Jahr:
2004
Enthalten in:
Studies in Nonlinear Dynamics & Econometrics, 8/2(2004-05-18)
Format:
Artikel (online)
ID: 378929879
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024 7 0 |a 10.2202/1558-3708.1211  |2 doi 
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245 0 0 |a MCMC Bayesian Estimation of a Skew-GED Stochastic Volatility Model  |h [Elektronische Daten]  |c [Nunzio Cappuccio, Diego Lubian, Davide Raggi] 
520 3 |a In this paper we present a stochastic volatility model assuming that the return shock has a Skew-GED distribution. This allows a parsimonious yet flexible treatment of asymmetry and heavy tails in the conditional distribution of returns. The Skew-GED distribution nests both the GED, the Skew-normal and the normal densities as special cases so that specification tests are easily performed. Inference is conducted under a Bayesian framework using Markov Chain MonteCarlo methods for computing the posterior distributions of the parameters. More precisely, our Gibbs-MH updating scheme makes use of the Delayed Rejection Metropolis-Hastings methodology as proposed by Tierney and Mira (1999), and of Adaptive-Rejection Metropolis sampling. We apply this methodology to a data set of daily and weekly exchange rates. Our results suggest that daily returns are mostly symmetric with fat-tailed distributions while weekly returns exhibit both significant asymmetry and fat tails. 
540 |a ©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston 
700 1 |a Cappuccio  |D Nunzio  |u University of Padova, nunzio.cappuccio@unipd.it  |4 aut 
700 1 |a Lubian  |D Diego  |u University of Verona, Italy, diego.lubian@univr.it  |4 aut 
700 1 |a Raggi  |D Davide  |u Università degli Studi di Verona, daviragg@stat.unipd.it  |4 aut 
773 0 |t Studies in Nonlinear Dynamics & Econometrics  |d De Gruyter  |g 8/2(2004-05-18)  |q 8:2  |1 2004  |2 8  |o snde 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Cappuccio  |D Nunzio  |u University of Padova, nunzio.cappuccio@unipd.it  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Lubian  |D Diego  |u University of Verona, Italy, diego.lubian@univr.it  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Raggi  |D Davide  |u Università degli Studi di Verona, daviragg@stat.unipd.it  |4 aut 
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