We examine the competitive effects of the vertical integration of gasoline refineries and retailers in the U.S. Adapting the first-order condition approach of static oligopoly games to the analysis of vertically related oligopolies, we develop a novel framework for directly evaluating the...

This paper empirically illustrates a new aspect of vertical integration that may hurt consumer welfare other than foreclosure and misuse of rivals' information by considering the possibility that a vertical merger turns out detrimental to the merged entity. My empirical results using data from...

We examine the competitive effects of the vertical integration of gasoline refineries and retailers in the U.S. Adapting the first-order condition approach of static oligopoly games to the analysis of vertically related oligopolies, we develop a novel framework for directly evaluating the...

Abstract: Using a unique sample of 425 bank mergers in the US announced between 2000 and 2008 this paper provides clear evidence supporting the collusion and productive efficiency hypotheses. By analyzing 425 bank mergers and a total of 1112 possible rivals, our analysis shows that the majority...

This paper presents new evidence regarding the relation between profit, revenue, and cost efficiencies of U.S. commercial banks. Building on the widely used nonstandard profit function (NSPF) approach, we show (i) why estimation of NSPF would be wrong and (ii) how revenue and cost efficiencies...

The Lerner index is widely used to assess firms' market power. However, estimation and interpretation present several challenges, especially for banks, which tend to produce multiple outputs and operate with considerable inefficiency. We estimate Lerner indices for U.S. banks for 2001-18 using...

This paper analyzes the effect of injunctions on royalty negotiations for standard essential patents. We develop a model in which courts grant injunctions only when they have sufficient evidence that the prospective licensee is unwilling, in line with the way we understand Courts to operate in...

I present the following proposal: information revealed during non-cartel investigations by competition law enforcement authorities, such as evaluation of M&As or investigation of monopolization (dominance) conduct, should be directly used to investigate and prosecute cartels. Currently, in...

We estimate the deterrence effects of U.S. merger policy instruments with respect to the composition and frequency of future merger notifications. Data from the Annual Reports by the U.S. DOJ and FTC allow industry based measures over the 1986-1999 period of the conditional probabilities for...

We estimate the deterrence effects of U.S. merger policy instruments with respect to the composition and frequency of future merger notifications. Data from the Annual Reports by the U.S. Department of Justice and Federal Trade Commission allow industry-based measures over the 1986-1999 period...