Theoretically, if firms face a regulatory per-customer quantity limit, they should have an incentive to discriminatively charge high-demand customers higher prices and make them just willing to buy a quantity equal to the limit. In the U.S. residential mortgage industry, mortgages with...

This paper evaluates the recent literature claiming that the US economy has generally become less competitive causing the US economy to perform poorly and that lax antitrust policy is one important reason for the decline in economic performance. Although there certainly are empirical facts...

This study examines the change in entering class median LSAT, a key input into the U.S. News & World Report rankings, between 1993 and 2004. Using multivariate regression analysis, the authors model several factors that can influence the direction and magnitude of this change. The study presents...

Using firm level panel data from the U.S., I explore the relationship between firm size and R&D productivity for two important and R&D-intensive industries: Semiconductors and Pharmaceuticals. I employ two measures of a firm's R&D performance: the number of citations received per patented...

We show that most US food, drugstore, and mass merchandise chains charge nearly-uniform prices across stores, despite wide variation in consumer demographics and the level of competition. Estimating a model of consumer demand reveals substantial within-chain variation in price elasticities and...

We build a model of firm entry and exit and show how returns to scale shape firm survival, the equilibrium productivity and size distributions and firm concentration. High productivity dispersion and high concentration ratios need not reflect inefficiencies when returns to scale are strongly...

I document the evolution of market power in the U.S. airline industry for the period 1990:Q1-2019:Q4. I recover estimates of markups, defined as the ratio of price to marginal cost, at the airline-time level. Dominant carriers in the industry have substantially increased their markups in the...

This study presents an empirical test of the relationship between market concentration and new product introductions. The analysis uses an annual panel data set of the US processed food industry that spans across the period 1983 to 2004. The estimations depict that market concentration increases...