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Rethinking Measures of Mergers & Acquisitions Deal Premiums

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  • Eaton, Gregory W.
  • Liu, Tingting
  • Officer, Micah S.

Abstract

Many academic studies use fixed preannouncement event days (e.g., -20,-42, or -63) to measure takeover premiums. In this paper, we show that the use of traditional fixed windows generates premiums that are underestimated by as much as 8 percentage points. This downward bias is especially severe for transactions with long processes (e.g., target-initiated deals). We take account of this bias by hand collecting deal initiation dates and show that using these dates results in measured premiums that give contradictory conclusions to those found in existing literature. We also offer guidance for measuring premiums if hand collecting data is impractical.

Suggested Citation

  • Eaton, Gregory W. & Liu, Tingting & Officer, Micah S., 2021. "Rethinking Measures of Mergers & Acquisitions Deal Premiums," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 56(3), pages 1097-1126, May.
    • Handle: RePEc:cup:jfinqa:v:56:y:2021:i:3:p:1097-1126_11
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    Cited by:

    1. Andres, Christian & Bazhutov, Dmitry & Cumming, Douglas J. & Limbach, Peter, 2021. "Does Speculative News Hurt Productivity? Evidence from Takeover Rumors," CFR Working Papers 21-02, University of Cologne, Centre for Financial Research (CFR), revised 2021.
    2. Liu, Tingting & Lu, Zhongjin (Gene) & Shu, Tao & Wei, Fengrong, 2022. "Unique bidder-target relatedness and synergies creation in mergers and acquisitions," Journal of Corporate Finance, Elsevier, vol. 73(C).
    3. Eaton, Gregory W. & Guo, Feng & Liu, Tingting & Officer, Micah S., 2022. "Peer selection and valuation in mergers and acquisitions," Journal of Financial Economics, Elsevier, vol. 146(1), pages 230-255.
    4. Baldi, Francesco & Salvi, Antonio, 2022. "Disentangling acquisition premia: Evidence from the global market for corporate control," Finance Research Letters, Elsevier, vol. 48(C).

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