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Conditional Methods in Event-Studies and an Equilibrium Justification for Standard Event-Study Procedures

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  • Nagpurnanand R. Prabhala

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    (Robert H. Smith School of Business)

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    Abstract

    The literature on conditional event-study methods criticizes standard event-study procedures as being misspecified, if events are voluntary and investors are rational. We argue, however, that standard procedures (i) lead to statistically valid inferences, under conditions described in the paper and (ii) are often superior means of inference, even when event-study data are generated exactly as per a class of rational expectations specifications introduced by the conditional methods literature. Our results provide an equilibrium justification for traditional event-study methods, and we suggest how these simple procedures may be combined with conditional methods, so as to improve statistical power in event-studies.

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    Bibliographic Info

    Paper provided by Yale School of Management in its series Yale School of Management Working Papers with number ysm55.

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    Date of creation: 26 Mar 1997
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    Handle: RePEc:ysm:somwrk:ysm55

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    Web page: http://icf.som.yale.edu/
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    Cited by:
    1. Guo, Re-Jin & Kruse, Timothy A. & Nohel, Tom, 2008. "Undoing the powerful anti-takeover force of staggered boards," Journal of Corporate Finance, Elsevier, vol. 14(3), pages 274-288, June.
    2. Leuz, Christian & Triantis, Alexander & Yue Wang, Tracy, 2008. "Why do firms go dark? Causes and economic consequences of voluntary SEC deregistrations," Journal of Accounting and Economics, Elsevier, vol. 45(2-3), pages 181-208, August.
    3. Filson, Darren & Olfati, Saman, 2014. "The impacts of Gramm–Leach–Bliley bank diversification on value and risk," Journal of Banking & Finance, Elsevier, vol. 41(C), pages 209-221.
    4. Ravi Dhar & William Goetzmann & Ning Zhu & EFA Moscow, 2004. "The Impact of Clientele Changes: Evidence from Stock Splits," Yale School of Management Working Papers ysm369, Yale School of Management, revised 01 Sep 2009.
    5. Maloney, Michael T. & Mulherin, J. Harold, 2003. "The complexity of price discovery in an efficient market: the stock market reaction to the Challenger crash," Journal of Corporate Finance, Elsevier, vol. 9(4), pages 453-479, September.
    6. Guo, Lin & Mech, Timothy S., 2000. "Conditional event studies, anticipation, and asymmetric information: the case of seasoned equity issues and pre-issue information releases," Journal of Empirical Finance, Elsevier, vol. 7(2), pages 113-141, August.
    7. : Arie E. Gozluklu & : Pietro Perotti & : Barbara Rindi & : Roberta Fredella, 2013. "Removing the Trade Size Constraint? Evidence from the Italian Market Design," Working Papers wpn13-11, Warwick Business School, Finance Group.
    8. Arie E. Gozluklu & Pietro Perotti & Barbara Rindi & Roberta Fredella, 2013. "Removing the Trade Size Constraint? Evidence from the Italian Market Design," Working Papers 493, IGIER (Innocenzo Gasparini Institute for Economic Research), Bocconi University.
    9. Taher Hamza, 2009. "La performance à court et à long terme de l'acquéreur:l'impact de la détention d'une position de contrôle," Revue Finance Contrôle Stratégie, revues.org, vol. 12(1), pages 33-65, March.
    10. Laguna, Marie-Aude, 2010. "Unexpected Media Coverage and Stock Market Outcomes : Evidence from Chemical Disasters," Economics Papers from University Paris Dauphine 123456789/5891, Paris Dauphine University.
    11. Scruggs, John T., 2007. "Estimating the cross-sectional market response to an endogenous event: Naked vs. underwritten calls of convertible bonds," Journal of Empirical Finance, Elsevier, vol. 14(2), pages 220-247, March.

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