Economic analysis of competition regulation is most developed in the domain of horizontal mergers, and modern agency guidelines reflect a substantial consensus on the appropriate template for merger assessment. Nevertheless, official protocols are understood to rest on a problematic market...

This paper develops a theory of oligopoly and markups in general equilibrium. Firms compete in a network of product market rivalries that emerges endogenously out of the characteristics of the products and services they supply. My model embeds a novel, highly tractable and scalable demand system...

We study how agglomeration forces influence the post-merger restructuring of the combined firm through the channel of the geographic overlap of acquirer and target establishments. We hypothesize and find that the geographic effect differs for horizontal and vertical mergers, and depends on the...