Unexpected problems sometimes arise when governments attempt to introduce competition. The problem considered herein is market power and its exercise during the California electricity crisis of 2000–2001. In introducing competition, both transitional and long-run opportunities for firms...

We study the optimal timing of merger control by comparing the pre-and post closing enforcement. Mergers have both pro- and anticompetitive effects, and the parties(the agency and the merging …firms) veri…able information on them is endogenous: it depends on the timing of the merger control,...

This article investigates how antitrust agencies should structure the disclosing of information about effciency gains from interested parties (merging .rms, and competitors) in merger control. We analyze the particular case of a horizontal merger withdanger of foreclosure, where welfare can...

Naturally, competition policy is based on competition economics made applicable in terms of law and its enforcement. Within the different branches of competition economics, modern industrial economics, or more precisely game-theoretic oligopoly theory, has become the dominating paradigm both in...

This article investigates how antitrust agencies should structure the disclosing of information about efficiency gains from interested parties (merging firms, and competitors) in merger control. We analyze the particular case of a horizontal merger with danger of foreclosure, where welfare can...

This report studies the importance of efficiency gains from horizontal mergers. A general theme throughout this report is that efficiency gains, and their pass-on to consumers, may vary substantially from merger to merger. For this reason it seems appropriate to reconsider current practice in...

We examine coordinated effects of mergers in the Swedish retail market for gasoline during the period 1986-2002. Despite significant changes in market concentration and many factors conductive to coordination, the empirical analysis shows that the level of coordination is low. In addition,...

A government wanting to promote an efficient allocation of resources as measured by the total surplus, should strategically delegate to its competition authority a welfare standard with a bias in favour of consumers. A consumer bias means that some welfare increasing mergers will be blocked....