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Stock Returns in Mergers and Acquisitions

Author

Listed:
  • Dirk Hackbarth

    (Washington University, St. Louis - John M. Olin School of Business)

  • Erwan Morellec

    (University of Lausanne - Institute of Banking and Finance (IBF))

Abstract

This paper develops a real options framework to analyze the behavior of stock returns in mergers and acquisitions. In this framework, the timing and terms of takeovers are endogenous and result from value-maximizing decisions. The implications of the model for abnormal announcement returns are consistent with the available empirical evidence. In addition, the model generates new predictions regarding the dynamics of firm-level betas for the time period surrounding control transactions. Using a sample of 1090 takeovers of publicly traded US firms between 1985 and 2002, we present new evidence on the dynamics of firm-level betas, which is strongly supportive of the model's predictions.

Suggested Citation

  • Dirk Hackbarth & Erwan Morellec, 2006. "Stock Returns in Mergers and Acquisitions," Swiss Finance Institute Research Paper Series 06-01, Swiss Finance Institute.
  • Handle: RePEc:chf:rpseri:rp0601
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    Keywords

    takeovers; real options; stock returns; firm-level betas;

    JEL classification:

    • G13 - Financial Economics - - General Financial Markets - - - Contingent Pricing; Futures Pricing
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G31 - Financial Economics - - Corporate Finance and Governance - - - Capital Budgeting; Fixed Investment and Inventory Studies
    • G34 - Financial Economics - - Corporate Finance and Governance - - - Mergers; Acquisitions; Restructuring; Corporate Governance

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