In September 2016, the U.S. Court of Appeals for the Second Circuit issued a decision that recognized and applied important economic principles concerning the antitrust analysis of single-firm conduct in two-sided markets. The Second Circuit reversed a February 2015 decision of the U.S. District...

Christie and Schultz (Camp;S) and Christie, Harris and Schultz (CHamp;S) suggest that Nasdaq dealers might tacitly collude to maintain wide bid-ask spreads. Each of the steps by which they reach their conclusions is wrong or misleading. (i) The inference of collusion that widens Nasdaq spreads,...

Economists have long recognized that certainty of contract is essential to a healthy economy. Long-term forward contracts, in particular, help reduce financial risk. Those contracts can only accomplish that goal, however, if parties know the contracts will be enforced. From an economic and...

We develop a methodology that quantifies from data on itinerary demand consumers' valuations of the characteristics of airline networks, and show that airline network effects are highly valued. We show that these effects are crucial for determining consumer impacts of public policies that affect...

In a review of “Economics at the FTC,” Farrell et al. (2011) discuss empirical methods FTC economists use to assess the potential price effects of prospective hospital mergers. The primary method is a framework based on proxies for the bargaining power of hospitals that are calculated from...