The sources of gains to M&A in the automotive supply industry: Testing collusion versus efficiency theory

Type de publication:

Journal Article


International Journal of Automotive Technology and Management, Volume 14, Number 1, p.46-64 (2014)



In this paper, we examine the wealth effects of horizontal mergers and acquisitions in the automotive supply industry. In order to test the theoretical implications of the competing efficiency and collusion theories, we investigate the cumulative abnormal returns (CAR) induced by M&A announcements on acquiring companies as well as their respective rivals and suppliers. Based on a sample of 205 takeovers, we find that mergers and acquisitions entail positive CAR on acquirers, but lead to negative share price reactions for customers as well as rivals. This result stands in clear contrast to recent studies that are dedicated to the upstream and horizontal effects of takeovers and speaks in favour of the efficiency theory of M&A activity rather than the collusion theory. Copyright © 2014 Inderscience Enterprises Ltd.

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