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Volatility clustering and event-induced volatility: Evidence from UK mergers and acquisitions

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  • Ercan Balaban
  • Charalambos Th. Constantinou
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    Abstract

    The paper describes simultaneous tests of the effects of announcements of UK mergers and acquisitions on both the mean and conditional volatility functions for UK bidder firms. Unlike previous research, the entire data set is utilized, thus avoiding researcher-chosen event periods. The cross-sectional test statistics for 745 firms show that the announcement day returns are significantly negative and the conditional volatility decreases. Results suggest that the event studies should incorporate firm-specific time-varying volatility into their abnormal return generating processes and into the tests calibrating the significance of both abnormal return and abnormal volatility around an event.

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    File URL: http://www.tandfonline.com/doi/abs/10.1080/13518470500377430
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    Bibliographic Info

    Article provided by Taylor & Francis Journals in its journal The European Journal of Finance.

    Volume (Year): 12 (2006)
    Issue (Month): 5 ()
    Pages: 449-453

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    Handle: RePEc:taf:eurjfi:v:12:y:2006:i:5:p:449-453

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    Web page: http://www.tandfonline.com/REJF20

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    Related research

    Keywords: Conditional heteroscedasticity; volatility clustering; event studies; mergers and acquisitions; announcement effects; abnormal performance;

    References

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    1. Andersen, Torben G & Bollerslev, Tim, 1998. "Answering the Skeptics: Yes, Standard Volatility Models Do Provide Accurate Forecasts," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 39(4), pages 885-905, November.
    2. Brown, Stephen J. & Warner, Jerold B., 1980. "Measuring security price performance," Journal of Financial Economics, Elsevier, vol. 8(3), pages 205-258, September.
    3. Ercan Balaban & Asli Bayar & Robert Faff, 2006. "Forecasting stock market volatility: Further international evidence," The European Journal of Finance, Taylor & Francis Journals, vol. 12(2), pages 171-188.
    4. Bollerslev, Tim & Chou, Ray Y. & Kroner, Kenneth F., 1992. "ARCH modeling in finance : A review of the theory and empirical evidence," Journal of Econometrics, Elsevier, vol. 52(1-2), pages 5-59.
    5. Bollerslev, Tim, 1986. "Generalized autoregressive conditional heteroskedasticity," Journal of Econometrics, Elsevier, vol. 31(3), pages 307-327, April.
    6. Corrado, Charles J., 1989. "A nonparametric test for abnormal security-price performance in event studies," Journal of Financial Economics, Elsevier, vol. 23(2), pages 385-395, August.
    7. Brown, Stephen J. & Warner, Jerold B., 1985. "Using daily stock returns : The case of event studies," Journal of Financial Economics, Elsevier, vol. 14(1), pages 3-31, March.
    8. Boehmer, Ekkehart & Masumeci, Jim & Poulsen, Annette B., 1991. "Event-study methodology under conditions of event-induced variance," Journal of Financial Economics, Elsevier, vol. 30(2), pages 253-272, December.
    9. Ser-Huang Poon & Clive W.J. Granger, 2003. "Forecasting Volatility in Financial Markets: A Review," Journal of Economic Literature, American Economic Association, vol. 41(2), pages 478-539, June.
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    Cited by:
    1. Ulrich Oberndorfer & Marcus Wagner & Andreas Ziegler, 2011. "Does the Stock Market Value the Inclusion in a Sustainability Stock Index? An Event Study Analysis for German Firms," MAGKS Papers on Economics 201130, Philipps-Universität Marburg, Faculty of Business Administration and Economics, Department of Economics (Volkswirtschaftliche Abteilung).
    2. Chortareas, Georgios & Cipollini, Andrea & Eissa, Mohamed Abdelaziz, 2012. "Switching to floating exchange rates, devaluations, and stock returns in MENA countries," International Review of Financial Analysis, Elsevier, vol. 21(C), pages 119-127.
    3. Ulrich Oberndorfer & Dirk Ulbricht & Janina Ketterer, 2007. "Lost in Transmission? Stock Market Impacts of the 2006 European Gas Crisis," Ifo Working Paper Series Ifo Working Paper No. 41, Ifo Institute for Economic Research at the University of Munich.
    4. Oberndorfer, Ulrich & Schmidt, Peter & Wagner, Marcus & Ziegler, Andreas, 2013. "Does the stock market value the inclusion in a sustainability stock index? An event study analysis for German firms," Journal of Environmental Economics and Management, Elsevier, vol. 66(3), pages 497-509.

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