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Discussion Paper Details

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Title: Winning by Losing: Evidence on the Long-Run Effects of Mergers

Author(s): Ulrike M. Malmendier, Enrico Moretti and Florian Peters

Publication Date: March 2018

Keyword(s):

Programme Area(s): Financial Economics and Labour Economics

Abstract: We propose a novel approach to measuring returns to mergers. In a new data set of close bidding contests we use losers' post-merger performance to construct the counterfactual performance of winners had they not won the contest. Stock returns of winners and losers closely track each other over the 36 months before the merger, corroborating our approach to identification. Bidders are also very similar in terms of Tobins Q, profitability and other accounting measures. Over the three years after the merger, however, losers outperform winners by 24 percent. Commonly used methodologies such as announcement returns fail to identify acquirors' underperformance.

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Bibliographic Reference

Malmendier, U, Moretti, E and Peters, F. 2018. 'Winning by Losing: Evidence on the Long-Run Effects of Mergers'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=12830