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Further evidence on long-run abnormal returns after corporate events

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  • Kolari, James W.
  • Pynnonen, Seppo
  • Tuncez, Ahmet M.

Abstract

This paper investigates abnormal standardized returns (ASRs) after major corporate events. Dutta, Knif, Kolari, and Pynnonen (2018) have shown that the ASR t-test has superior size and power compared to traditional test statistics. Based on this new test statistic compared to traditional test methods, we re-examine long-run abnormal returns after mergers and acquisitions, initial public offerings, seasoned equity offerings, dividend initiations, stock repurchases, stock splits, and reverse stock splits. While some recent studies report disappearing long-run event effects over time, our ASR tests in different subperiods from 1980 to 2015 detect significant long-run abnormal returns after these corporate actions. Graphical analyses of ASRs further support our statistical test results. We conclude that long-run abnormal returns persist after major corporate events.

Suggested Citation

  • Kolari, James W. & Pynnonen, Seppo & Tuncez, Ahmet M., 2021. "Further evidence on long-run abnormal returns after corporate events," The Quarterly Review of Economics and Finance, Elsevier, vol. 81(C), pages 421-439.
    • Handle: RePEc:eee:quaeco:v:81:y:2021:i:c:p:421-439
    DOI: 10.1016/j.qref.2020.10.011
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    More about this item

    Keywords

    Abnormal return; Dividend initiation; Initial public offering (IPO); Long-run event study; Merger and acquisition; Seasoned equity offering (SEO); Share repurchase; Stock splits;
    All these keywords.

    JEL classification:

    • C10 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - General
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
    • G34 - Financial Economics - - Corporate Finance and Governance - - - Mergers; Acquisitions; Restructuring; Corporate Governance
    • G35 - Financial Economics - - Corporate Finance and Governance - - - Payout Policy

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