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Market Risk in Demutualised Self-Listed Stock Exchanges: An International Analysis of Selected Time-Varying Betas

Author

Listed:
  • Andrew Worthington
  • Helen Higgs

    (School of Economics and Finance, Queensland University of Technology)

Abstract

This paper examines market risk in four demutualised and self-listed stock exchanges: the Australian Stock Exchange, the Deutsche Börse, the London Stock Exchange and the Singapore Stock Exchange. Daily company and MSCI index returns provide the respective asset and market portfolio data. A bivariate MA-GARCH model is used to estimate time-varying betas for each exchange from listing until 7 June 2005. While the results indicate significant beta volatility, unit root tests show the betas to be mean-reverting. These findings are used to suggest that despite concerns that demutualised and self-listed exchanges entail new market risks that merit regulatory intervention, the betas of the exchange companies have not changed significantly since listing. However, market risk does vary considerable across the exchanges, with mean time-varying betas of 0.56 for the Deutsche Börse, 0.66 for the London Stock Exchange, 0.78 for the Singapore Stock Exchange, and 0.95 for the Australian Stock Exchange. Key words: Accounting scandals, Enron, WorldCom, Event study, International Stock Markets.

Suggested Citation

  • Andrew Worthington & Helen Higgs, 2005. "Market Risk in Demutualised Self-Listed Stock Exchanges: An International Analysis of Selected Time-Varying Betas," School of Economics and Finance Discussion Papers and Working Papers Series 201, School of Economics and Finance, Queensland University of Technology.
  • Handle: RePEc:qut:dpaper:201
    as

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    References listed on IDEAS

    as
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    Cited by:

    1. Maurizio Polato & Josanco Floreani & Andrea Paltrinieri & Flavio Pichler, 2016. "Religion, governance and performance: evidence from Islamic and conventional stock exchanges," Journal of Management & Governance, Springer;Accademia Italiana di Economia Aziendale (AIDEA), vol. 20(3), pages 591-623, September.
    2. repec:kap:rqfnac:v:50:y:2018:i:4:d:10.1007_s11156-017-0658-5 is not listed on IDEAS
    3. Andrew C. Worthington, 2009. "Political Cycles in the Australian Stock Market since Federation," Australian Economic Review, The University of Melbourne, Melbourne Institute of Applied Economic and Social Research, vol. 42(4), pages 397-409.

    More about this item

    Keywords

    Time-varying betas; moving average; bivariate GARCH; demutualization and self-listing; exchanges;

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