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An Investigation of Event Study Methodologies with Clustered Events and Event Day Uncertainty

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  • Lee, Sang H
  • Varela, Oscar

Abstract

The specification and power of mean-adjusted, market and quadratic models in event studies using OLS, Patell, Jaffe and GLS are examined. Simulation is used with security and portfolio returns to capture different cross correlations. The market model is always superior in specification and power compared to the mean-adjusted and quadratic models. The use of OLS with the market model is supported in the absence of clustered events and event day uncertainty, whereas use of Jaffe with the market model is supported in the presence of these problems. Copyright 1997 by Kluwer Academic Publishers

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  • Lee, Sang H & Varela, Oscar, 1997. "An Investigation of Event Study Methodologies with Clustered Events and Event Day Uncertainty," Review of Quantitative Finance and Accounting, Springer, vol. 8(3), pages 211-228, May.
    • Handle: RePEc:kap:rqfnac:v:8:y:1997:i:3:p:211-28
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    Cited by:

    1. Noy, Ilan, 2008. "Sovereign default risk, the IMF and creditor moral hazard," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 18(1), pages 64-78, February.
    2. Daniel Celeny & Loic Mar'echal & Evgueni Rousselot & Alain Mermoud & Mathias Humbert, 2024. "Prioritizing Investments in Cybersecurity: Empirical Evidence from an Event Study on the Determinants of Cyberattack Costs," Papers 2402.04773, arXiv.org.
    3. Pablo Morán V, 2003. "Looking Back At The Controversy: Unexpected Wealth Effects Of A Transitory Clause," Abante, Escuela de Administracion. Pontificia Universidad Católica de Chile., vol. 6(2), pages 117-147.
    4. Wijayana, Singgih & Gray, Sidney J., 2018. "Capital market consequences of cultural influences on earnings: The case of cross-listed firms in the U.S. stock market," International Review of Financial Analysis, Elsevier, vol. 57(C), pages 134-147.
    5. Oscar Varela, 1999. "Futures and realized cash or settle prices for gold, silver, and copper," Review of Financial Economics, John Wiley & Sons, vol. 8(2), pages 121-138, September.
    6. Liang Zhang & Tie-nan Wang & Hung-Gay Fung, 2014. "Market Reaction to Corporate Social Responsibility Announcements: Evidence from China," China & World Economy, Institute of World Economics and Politics, Chinese Academy of Social Sciences, vol. 22(2), pages 81-101, March.

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