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Time-Varying Beta—The Case Study of the Largest Companies from the Polish, Czech, and Hungarian Stock Exchange

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  • Wiesław Dębski
  • Ewa Feder-Sempach
  • Piotr Szczepocki

Abstract

The main goal of this article is to investigate empirically the Kalman approach to estimate the time-varying beta parameter as a systematic investment risk market in Poland, Czech Republic, and Hungary. In our research, we investigate the assessments of beta on the basis of seven specifications of time-varying beta for the 12 largest companies listed on the Warsaw Stock Exchange (Poland), 7 on Prague Stock Exchange (Czech Republic), and 11 on Budapest Stock Exchange (Hungary). The obtained results are compared with the estimates received on the basis of Sharpe’s linear model. Estimations are made using the maximum likelihood method for monthly data in the period 2005–2017. We are presenting the ranking of the used specifications according to three criteria of goodness of fit and the matrix of correlation coefficients between the results of these specifications. The results show that the Kalman filter estimators outperform the others.

Suggested Citation

  • Wiesław Dębski & Ewa Feder-Sempach & Piotr Szczepocki, 2021. "Time-Varying Beta—The Case Study of the Largest Companies from the Polish, Czech, and Hungarian Stock Exchange," Emerging Markets Finance and Trade, Taylor & Francis Journals, vol. 57(13), pages 3855-3877, October.
    • Handle: RePEc:mes:emfitr:v:57:y:2021:i:13:p:3855-3877
    DOI: 10.1080/1540496X.2020.1738188
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