We characterize the divergence between informational and economic efficiency in a rational expectations competitive market with asymmetric information about the costs of production. We find that prices may contain too much or too little information with respect to incentive efficient allocations...

We study the effects of a change in some exogenous variable (the fixed cost or a parameter in the payoff functions) on the strategies played in a Symmetric Cournot Equilibrium with Free Entry (SCEFE). We also show that any observation on prices, profits and number of firms is compatible with the...

In this paper we present a set of axioms guaranteeing that, in exchange economies with or without indivisible goods, the set of Nash, Strong and active Walrasian Equilibria all coincide in the framework of market games.

In this paper we consider the spatial model by Anderson and Neven (1991) to study the subgame perfect equilibria without restricting the consumers' reservation price. New equilibria emerge where firms locate at disperse points in space. Also, at equilibrium, firms may monopolize some segments of...

The paper offers an overview of the literature on bundling in the telecommunications sector and its application in the Spanish market. We argue that the use of bundling in the provision of services is associated to technological reasons. Therefore, there appears no need to regulate bundling...

In several interesting markets, demand is an increasing function of past sales because of learning, network externalities, or fashion. This paper examines entry into such markets.

An important aspect of an organizational form is the extent to which it allows observation of payoff relevant environmental variables. For example, a firm operating in two locally separated markets can choose between appointing a central manager or two lacal managers. It is plausible that in the...

This paper is concerned with the interactions between the structure of the banking sector and the product market. We consider a framework where firms' installation costs are financed by means of industrial loans from specialized banks. Initially, we assume that an exogenous number of banks...

In a micro-founded model, we derive novel incentives for a monopoly search engine to distort its organic and its sponsored results on searches for online content and offline products. Distorting organic results towards content publishers with less effective display advertising and/or distorting...