This paper empirically analyzes how a data broker affects competition in oligopolistic product markets. It examines a unique case concerning the two dominant Finnish food retail companies’ voluntary withdrawal from information exchange via a data broker. Moreover, the companies jointly...

We study the potential loss in social welfare and changes in incentives to invest in R&D that result when the market leading firm is deprived of its position. We show that under plausible assumptions like free entry or repeated market interactions there is a social value of market leadership and...

This article presents a novel method of market delineation, which generates virtually isolated residential clusters using data on the spatial distribution of population. The performance of this approach is evaluated by contrasting it with traditional delineation techniques based on municipal...

This paper analyses the endogenous formation of technology sharing coalitions with asymmetric firms. Coalition partners produce complementary technology advancements, although each firm determines its R&D investment level non-cooperatively and there is no co-operation in the product market. We...

This paper formalizes an empirically implementable framework for the definition of local antitrust markets in retail markets. This framework rests on a demand model that captures the trade-off between distance and pecuniary cost across alternative shopping destinations within local markets. The...

This paper analyses endogenous formation of technology sharing coalitions with asymmetric firms. Coalition partners produce complementary technology advancements, although firms do not co-operate on R&D investment level or in the product market. The equilibrium coalition outcome is either...

This paper formalizes an empirically implementable framework for the definition of local antitrust markets in retail markets. This framework rests on a demand model that captures the trade-off between distance and pecuniary cost across alternative shopping destinations within local markets. The...

While often times the Hypothetical Monopolist Test (HMT) utilized in relevant market delineation is implemented with uniform price increases throughout all the goods in the candidate relevant market, since 1984 the versions of the U.S. Merger Guidelines have emphasized that these small but...

We set up a sequential merger game to study a firm's incentives to pass up on an opportunity to merge with another firm. We find that such incentives may exist when there are efficiency gains from a merger, firms are of different sizes, there is an antitrust authority present to approve mergers,...

At first glance, Holmes's general prominence in American jurisprudence does not appear to carry over into antitrust law. His antitrust opinions often appear to a modern reader perverse. Early in his tenure on the Supreme Court, he opined in his famous dissent in Northern Securities Co. v. United...