We characterize optimal strategies in a simple herding model where observations have a small cost. We assume that there are two states and two possible signals that each agent may get. The prior distribution is biased towards adopting behavior. That is, ex-ante, adopting gives a higher expected...

In competitive economies with private firm ownership, incomplete markets, and firm shareholders changing over time, several firm objectives have been proposed. Some are useful to understand efficiency of equilibria, and others are explicitly consistent with majority shareholder control or...

The rationalizability concept was introduced in Bernheim [Ber84] and Pearce [Pea84] to assess what can be inferred by rational players in a non-cooperative game in the presence of common knowledge. However, this notion can be defined in a number of ways that differ in seemingly unimportant minor...

We extend the Baye and Morgan (2001) model to study competition between price comparison sites in the information market on the internet. We identify one symmetric sub-game perfect Nash equilibrium in which (1) price comparison sites set the same advertising fees; (2) the same proportion of...

We study a Cournot oligopoly with one low-cost (dominant) firm and one or more high-cost (subordinate) firms. If the equilibrium is interior, with all firms producing positive quantity, a reallocation of production relative to the equilibrium point, such that the dominant firm produces more,...

We extend Milgrom and Weber's affiliated valuations model to the multi-unit case. We show that the discriminatory auction has a unique equilibrium, that corresponds to Milgrom and Weber's first-price equilibrium in the 2-bidder, constant marginal valuations case. This unique equilibrium...

Despite their scarcity in the literature, an abundance of globally regular indirect utility functions, involving as many parameters as desired, exist and are easily constructed as a function of simple homothetic component utilities.

In many capacity-intensive industries (e.g. electricity, bandwidth), exchanges allow firms, including competitors, to buy and sell wholesale capacity before selling on the retail market. Capacity exchanges allow firms to smooth demand shocks, but do they also facilitate tacit collusion to limit...

In a two-stage Cournot oligopoly cost minimization sometimes calls for ex ante identical firms to invest in diverse technologies. It is an implication of this result that it might be optimal to treat identical duopolistic polluters asymmetrically. We discuss the efficiency properties of a...

This paper studies the effects of uncoordinated environmental tax policies on firms' incentives to form bilateral R&D collaborations. It is shown that the complete network is pair-wise stable for small differences in the taxation of environmental emissions. Larger tax differentials may induce...