This paper explores how different margins of market share are related to markups. Using merged microdata on producers and consumers, we document that a firm's market share is mainly related to its number of customers, while its price-cost markup is associated only with its average sales per...

Concentration is a single summary statistic driven by two opposing forces: the number of firms in a market and the evenness of their market shares. This paper introduces a generalized measure of concentration that allows researchers to vary the relative importance of each force. Using the...

Merger policy is the most active area of U.S. antitrust policy. It is now widely believed that merger policy must move beyond its traditional focus on static efficiency to account for innovation and address dynamic efficiency. Innovation can fundamentally affect merger analysis in two ways....

We exploit French customs’ firm-level data to study how exporters pass a change in the VAT rate of one importing country through their prices. Looking at this reaction is of interest beyond a mere fiscal incidence analysis: VAT shocks provide instruments to identifying the extent of mark-up...

Two alternative relative compensation schemes are compared with respect to total output that can be generated at a given sum of salaries. While the promotion regime guarantees that any salary increase is permanent, the premium system allows a reduction in the income of an agent to the base...

Two alternative relative compensation schemes are compared with respect to total output that can be generated at a given sum of salaries. While the promotion regime guarantees that any salary increase is permanent, the premium system allows a reduction in the income of an agent to the base...