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Beta Instability of Firms: The Case of the Taiwan Stock Market During Its Financial Development

Department of Economis, National Dong Hwa University, Hualien, Taiwan

Ken Hung

Department of Business Management, National Doog Hwa University Hualien, Taiwan

Gladson Nwanna

Department of Accounting and Finance, Morgan State University, Baltimore, Maryland 21239

In this paper, we find evidence of the intra- and inter-period beta instability of firms in the Taiwan stock market during its financial development from 1982 to 1998. Particularly noteworthy is the result that the proportions of firms exhibiting beta instability, in the full sample and two well-known export-oriented industries, the textile and the electronics industries, are lower in the sub-period January 1987-December 1992 than in the other two sub-periods, January 1982- December 1986 and January 1993-December 1998. The result may be attributable to non-fundamental-driven optimism or pessimism about the market induced by speculative capital flows during the sub-period January 1987- December 1992.

Key Words: Market beta • exchange-rate beta • beta instability

Journal of Emerging Market Finance, Vol. 3, No. 1, 37-61 (2004)
DOI: 10.1177/097265270400300103


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