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Type: Journal article
Title: Computer-intensive time-varying model approach to the systematic risk of Australian industrial stock returns
Author: Yao, J.
Gao, J.
Citation: Australian Journal of Management, 2004; 29(1):121-145
Publisher: Univ New South Wales, Austr Grad Sch Management
Issue Date: 2004
ISSN: 0312-8962
Statement of
Juan Yao and Jiti Gao
Abstract: This paper aims to investigate the form of systematic risk of Australian industrial stock returns. We suggest using four stochastic state-space models for the analysis. The stochastic properties of systematic risk are studied by examining four classes of state-space models: random walk model, random coefficient model, ARMA(1,1) model and mean reverting model (or moving mean model). We have found that the industrial portfolio betas are unstable. The variation of industrial portfolio beta is either random or mean-reverting. Among the nineteen industrial groups, ten of them have the mean-reverting process betas but six of them seem to have a moving long-term mean. Five of the industrial groups have the random process betas, more specifically; the betas of three of them are the random walk processes while the betas of the other two are just the random coefficients. We have also identified that the betas of five industrial groups seem to follow an ARMR(1,1) process
Rights: Copyright © 2004 The Australian Graduate School of Management
RMID: 0020081882
DOI: 10.1177/031289620402900113
Published version:
Appears in Collections:Economics publications

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