Antitrust & Competition Policy Blog

Editor: D. Daniel Sokol
University of Florida
Levin College of Law

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Thursday, June 17, 2010

The Impact of Mergers on the Degree of Competition in the Banking Industry

Posted by D. Daniel Sokol

Vittoria Cerasi (Department of Statistics, Bicocca University), Barbara Chizzolini (Department of Economics, Bocconi University) and Marc Ivaldi (Toulouse School of Economics) provide some empirical answers on The Impact of Mergers on the Degree of Competition in the Banking Industry.

ABSTRACT: This paper analyses the relation between competition and concentration in the banking sector. The empirical answer is given by testing a monopolistic competition model of bank branching behaviour on individual bank data at county level (d├ępartements and provinces) in France and Italy. We propose a measure of the degree of competiveness in each local market that is function also of market structure indicators. We then use the econometric model to evaluate the impact of horizontal mergers among incumbent banks on competition and discuss when, depending on the pre-merger structure of the market and geographic distribution of branches, the merger is anti-competitive. The paper has implications for competition policy as it suggests an applied tool to evaluate the potential anti-competitive impact of mergers.

http://lawprofessors.typepad.com/antitrustprof_blog/2010/06/the-impact-of-mergers-on-the-degree-of-competition-in-the-banking-industry-.html

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