An Anatomy of Serial Acquirers, M&A Learning, and the Role of Post-Merger Integration
Dr. Jens Kengelbach
The Boston Consulting Group
Dominic C. Klemmer
Boston Consulting Group
HHL Leipzig Graduate School of Management - Department of Finance
Marco O. Sperling
HHL - Leipzig Graduate School of Management
december 10, 2012
Using a global sample of 26,444 M&A transactions, we empirically investigate the main drivers of serial acquirer takeover performance, focusing on the benefits of organizational learning and the detriments of post-merger integration (PMI) problems. Taking single acquirers as a control group, we find that multiple deal makers exhibit a 0.4 percentage points lower short-term abnormal return, equal to a $31M shareholder value disadvantage. While learning through experience does not depend on the quantity of acquisitions, serial acquirers can gain proficiency in some specific types of deals (specialized learning hypothesis). When looking at the PMI process, the time between two consecutive transactions and relative deal size are key success factors, suggesting that the capacity of an organization to integrate is limited. This is strong support for the indigestion hypothesis.
Number of Pages in PDF File: 47
Keywords: Mergers & Acquisitions, Serial Acquisitions, Indigestion Hypothesis, Organizational Learning
JEL Classification: G14, G32, G34working papers series
Date posted: October 19, 2011 ; Last revised: December 19, 2012
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