We show that divestitures accompanying horizontal mergers affect both the market power potential and the competitive efficiency of merging firms. Stock price reactions of customer firms are more positive (hence divestitures are more effective in mitigating the market power impact of the merger)...

Patent settlements between rivals restrain competition in many different ways. Antitrust requires them to be "proportional" in that their anti-competitive effects are commensurate with the firms' expectations about (counterfactual) patent litigation. Because these expectations are private and...

This paper uses network theory to argue that the consequences of horizontal ownership by large investment institutions are more complicated than, and sometimes completely the opposite of, what conventional economic theory predicts. Horizontal ownership occurs when a large investment institution,...

The German potable water supply industry is regarded highly fragmented, thus preventing efficiency improvements that could happen through consolidation. Focusing on a hypothetical restructuring of the industry, we use a cross-section sample of 364 German water utilities in 2006, applying Data...

An integrated management system is introduced when a company wants to achieve conformity of multiple norms with the aim of reducing the amount of paperwork, the time needed for assessment and the costs in construction and system maintenance. As the number of individual management systems has...

We set up a model to analyze the effects of mergers between sellers of complementary components where firms invest in compatibility and can engage in bundling. We consider the impact of merger on prices, investment and consumer surplus. We also analyse when the merged firm may have an incentive...

Recent years have witnessed an increased interest, by competition agencies, in assessing the competitive effects of partial acquisitions. We propose an empirical structural methodology to examine quantitatively the unilateral impact of partial horizontal acquisitions. The acquisitions may be...

The goal of antitrust policy is to protect and promote a vigorous competitive process. Effective rivalry spurs firms to introduce new and innovative products, as they seek to capture profitable sales from their competitors and to protect their existing sales from future challengers. In this...