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Volume 62, Issue 6

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Time-Varying Betas of Banking Sectors

Adam, Tomáš; Benecká, Soňa; Jánský, Ivo

Year: 2012   Volume: 62   Issue: 6   Pages: 485-504

Abstract: This paper analyzes the evolution of the systematic risk of the banking industries in eight advanced countries using weekly data from 1990 to 2012. Time-varying betas are estimated by means of a Bayesian state-space model with stochastic volatility, whose results are contrasted with those of the standard M-GARCH and rolling-regression models. We show that both country-specific and global events affect the perceived systematic risk, while the impact of the latter differs considerably across countries. Finally, our results do not support the previous findings that the systematic risk of the banking sector was underestimated before the last financial crisis.

JEL classification: C11, G12, G21

Keywords: CAPM, time-varying beta, multivariate GARCH, Bayesian state-space models, stochastic volatility

RePEc: http://ideas.repec.org/a/fau/fauart/v62y2012i6p485-504.html

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