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Journal of Financial Economics Vol. 144 No. 2 2022

Anticompetitive effects of horizontal acquisitions: The impact of within-industry product similarity

Maryam Fathollahi1; Jarrad Harford2,3,4; Sandy Klasa5

1 University of Oklahoma · 2 Institute of Economics · 3 Fudan University · 4 University of Washington · 5 University of Arizona

Abstract

Theory predicts that horizontal acquisitions can effectively increase incumbent firms’ market power in concentrated industries with high product similarity. Using a novel measure for industry product similarity, we show that in such industries firms’ propensity to make horizontal acquisitions is greater and that the acquisitions result in more positive announcement returns for the acquirer and rival firms and in a larger premium paid for the target. Also, the deals harm dependent customer and supplier firms and they are more likely to be challenged by antitrust authorities. Overall, by emphasizing the importance of product similarity, our results help explain mixed empirical findings on whether horizontal acquisitions are used to reduce competition intensity.

DOI
10.1016/j.jfineco.2021.06.017
Volume
144
Issue
2
Pages
645-669
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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