We empirically analyze exchanges of cost information in a multimarket oligopoly model for the airline industry with entry and incomplete information on marginal costs. We develop an algorithm to solve the Nash equilibrium numerically. We estimate the structural model of supply decisions using...

This article investigates the consumer welfare consequences of the recent code-share agreement between Continental Airlines and Northwest Airlines. We develop a discrete choice model based on individual flight characteristics. This structural model recognizes that consumers (i) may have...

In 1991, the U.S. Justice Department's Antitrust Division accused MIT and the Ivy League schools of fixing prices. The schools claimed that their cooperative behavior enabled them to concentrate financial aid on needy students and did not affect price. We analyze the empirical determinants of...

This article investigates how the tying of complementary products can be used to preserve and create monopoly positions. We first show how a monopolist of a product in the current period can use tying to preserve its monopoly in the future. We then show how a monopolist in one market can employ...