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Nonparametric rank tests for event studies

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  • Kolari, James W.
  • Pynnonen, Seppo

Abstract

Because stock prices are not normally distributed, the power of nonparametric rank tests dominate parametric tests in event study analyses of abnormal returns on a single day. However, problems arise in the application of nonparametric tests to multiple day analyses of cumulative abnormal returns (CARs) that have caused researchers to normally rely upon parametric tests. In an effort to overcome this shortfall, this paper proposes a generalized rank (GRANK) testing procedure that can be used on both single day and cumulative abnormal returns. Asymptotic distributions of the associated test statistics are derived, and their empirical properties are studied with simulations of CRSP returns. The results show that the proposed GRANK procedure outperforms previous rank tests of CARs and is robust to abnormal return serial correlation and event-induced volatility. Moreover, the GRANK procedure exhibits superior empirical power relative to popular parametric tests.

Suggested Citation

  • Kolari, James W. & Pynnonen, Seppo, 2011. "Nonparametric rank tests for event studies," Journal of Empirical Finance, Elsevier, vol. 18(5), pages 953-971.
  • Handle: RePEc:eee:empfin:v:18:y:2011:i:5:p:953-971
    DOI: 10.1016/j.jempfin.2011.08.003
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    References listed on IDEAS

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    Cited by:

    1. Panayiotis C. Andreou & Christodoulos Louca & Christos S. Savva, 2016. "Short-horizon event study estimation with a STAR model and real contaminated events," Review of Quantitative Finance and Accounting, Springer, vol. 47(3), pages 673-697, October.
    2. repec:eee:finlet:v:21:y:2017:i:c:p:132-139 is not listed on IDEAS
    3. Alexander Kerl & Carolin Schürg & Andreas Walter, 2014. "The impact of Financial Times Deutschland news on stock prices: post-announcement drifts and inattention of investors," Financial Markets and Portfolio Management, Springer;Swiss Society for Financial Market Research, vol. 28(4), pages 409-436, November.
    4. repec:eee:jocaae:v:10:y:2014:i:3:p:206-224 is not listed on IDEAS
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    6. Florian Berg & Yannick Le Pen, 2013. "Do corporate bond and credit default swap markets value environmental, social or corporate governance events?," Post-Print hal-01613922, HAL.
    7. Paulo Pereira da Silva, 2016. "Did Investors Seeking Short Exposure Move to the CDS Market after the 2011 Short-Sale Bans in European Financial Stocks?," Czech Journal of Economics and Finance (Finance a uver), Charles University Prague, Faculty of Social Sciences, vol. 66(4), pages 322-353, August.
    8. repec:dau:papers:123456789/11380 is not listed on IDEAS
    9. Devos, Erik & Hao, Wei & Prevost, Andrew K. & Wongchoti, Udomsak, 2015. "Stock return synchronicity and the market response to analyst recommendation revisions," Journal of Banking & Finance, Elsevier, vol. 58(C), pages 376-389.
    10. Luechinger, Simon & Moser, Christoph, 2014. "The value of the revolving door: Political appointees and the stock market," Journal of Public Economics, Elsevier, vol. 119(C), pages 93-107.
    11. Prevost, Andrew K. & Wongchoti, Udomsak & Marshall, Ben R., 2016. "Does institutional shareholder activism stimulate corporate information flow?," Journal of Banking & Finance, Elsevier, vol. 70(C), pages 105-117.
    12. repec:kap:jbuset:v:144:y:2017:i:3:d:10.1007_s10551-015-2814-y is not listed on IDEAS
    13. Matteo Pelagatti, 2013. "Nonparametric tests for event studies under cross-sectional dependence," Working Papers 244, University of Milano-Bicocca, Department of Economics, revised May 2013.
    14. repec:oup:jfinec:v:15:y:2017:i:2:p:286-301. is not listed on IDEAS
    15. Acker, Daniella & Duck, Nigel W., 2015. "Political risk, investor attention and the Scottish Independence referendum," Finance Research Letters, Elsevier, vol. 13(C), pages 163-171.
    16. Pozo, Veronica F. & Schroeder, Ted C., 2016. "Evaluating the costs of meat and poultry recalls to food firms using stock returns," Food Policy, Elsevier, vol. 59(C), pages 66-77.
    17. Loipersberger, Florian, 2017. "The Effect of Supranational Banking Supervision on the Financial Sector: Event Study Evidence from Europe," Discussion Papers in Economics 34610, University of Munich, Department of Economics.
    18. repec:eee:jbfina:v:91:y:2018:i:c:p:34-48 is not listed on IDEAS
    19. Lehmann, Sibylle H. & Hauber, Philipp & Opitz, Alexander, 2012. "Political rights, taxation, and firm valuation: Evidence from Saxony around 1900," FZID Discussion Papers 59-2012, University of Hohenheim, Center for Research on Innovation and Services (FZID).

    More about this item

    Keywords

    Rank test; Abnormal returns; Event study; Standardized returns;

    JEL classification:

    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • C10 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - General
    • C15 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Statistical Simulation Methods: General

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