In this paper, we offer a hybrid approach to merger simulation in which we allow rather extensive pre-testing to suggest the ‘correct', or most desirable, form for the underlying demand curves. Our application is the merger between the large mobile telephone companies Cingular and AT&T...

This article searches for a causal effect of industry concentration on estimates of persistent profitability differentials. I offer solutions to identification problems that plague related analyses by applying an IV and a natural experiment. This is the first study that explains estimates of...

This paper analyzes the monthly evolution of bank competition in Mexico from 2008 to 2019 using different measures. Subsequently, we analyze whether the 2014 financial reform had an effect on some of our competition measures. We use ordinary and quantile regression techniques and Markov...

Asymmetric information in procurement entails double marginalization. The phenomenon is most severe when the buyer has all the bargaining power at the production stage, while it vanishes when the buyer and suppliers' weights are balanced. Vertical integration eliminates double marginalization...

The literature has shown that in the short- and medium-term bank mergers and acquisitions (M&As) may generate a temporary reduction in firm credit. Using bank-firm matched data, this paper investigates the impact of M&As involving Italian banks over the period 2009-2019 on credit to firms,...

Revisions incorporated into the Horizontal Merger Guidelines in 2010 claim that the Department of Justice and the Federal Trade Commission consider anticompetitive effects to product “variety” when evaluating mergers. The Guidelines do not, however, explain the methodology or tools that can...

This paper develops a theory of oligopoly and markups in general equilibrium. Firms compete in a network of product market rivalries that emerges endogenously out of the characteristics of the products and services they supply. My model embeds a novel, highly tractable and scalable demand system...

Consumer multi-homing is considered to be critical for competition policy regarding digital platforms. To assess the role of consumer multi-homing in competition policy toward platforms, we develop a new framework that embeds consumer multi-homing in two-sided market into the otherwise standard...

Common ownership fundamentally upsets the well-settled merger enforcement ecosystem. Not only it challenges basic principles informing merger policy such as the presumed profitability of mergers for the merging firms and the merger-specificity of potential efficiencies but also it works against...

One of the most striking and undertheorized aspects of fields that commercialize patented technologies is the dynamic interplay of structural forces pushing toward consolidation. Of course, technological industries are complex ecosystems featuring numerous players of different sizes along the...