Horizontal mergers are usually under the scrutiny of antitrust authorities due to their potential undesirable effects on prices and consumer surplus. Ex-post evidence, however, suggests that not always these effects take place and even relevant mergers may end up having negligible price effects....

Horizontal mergers are usually under the scrutiny of antitrust authorities due to their potential undesirable effects on prices and consumer surplus. Ex-post evidence, however, suggests that not always these effects take place and even relevant mergers may end up having negligible price effects....

The combination of structural remedies and efficiency gains in a merger may lead to pro-competitive outcomes, thus maintaining pre-merger prices. Two types of efficiencies are necessary. The first corresponds to a flatter marginal cost function, the second to a decrease in the intercept of the...

In this paper, we study the impact of a merger on collusion depending on the endowment of capital asset among firms. We show that the merger makes the collusion easier to sustain when asymmetric capital stock combines with less efficient insiders because of more symmetric conditions and closer...

The fight against cartels is a priority for antitrust authorities on both sides of the Atlantic. What differs between the EU and the US is not the basic toolkit for achieving deterrence, but to whom it is targeted. In the EU, pecuniary sanctions against the firm are the only instruments...

This paper develops a theory of the centralization of firms engaged in multi-market collusive agreements. A centralized organization (called the unitary or U-form) allows price coordination across several markets, whereas with decentralized (the multidivisional or M-form) firms the probability...

The fight against cartels is a priority for antitrust authorities on both sides of the Atlantic. What differs between the EU and the US is not the basic toolkit for achieving deterrence, but to whom it is targeted. In the EU, pecuniary sanctions against the firm are the only instruments...