trends, markup trends, and the effects of mergers does not actually show a widespread decline in competition. Nor does it … observed changes in many industries are likely to reflect competition in action. We highlight research that points to targeted … interventions that can enable antitrust enforcement policy to better promote and protect competition. Throughout the paper, we …

We study how political factors shape competition in the mobile telecommunication sector. We show that the way a … government designs the rules of the game has an impact on concentration, competition, and prices. Pro-competition regulation … competition. Government intervention has large redistributive effects: U.S. consumers would gain $65bn a year if U.S. mobile …

rival hospitals, and lower premiums. Competition for enrollees forces non-integrated insurers to provide additional coverage … to high-quality non-integrated hospitals, resulting in plan networks that limit hospital competition. Whereas vertical … integration reduces double marginalization, skewed cost-sharing structures--and their effect on hospital competition--more than …

We develop a dynamic model of firm investment under uncertainty that captures firms' risk attitude using quantile … preferences. The firm maximizes its present value, defined as current profits and investment plus the discounted value of the τ … implies that the firm's investment policy equates the marginal cost of capital with the τ-quantile of the discounted present …

We present several empirical facts about trends in marketing investment in the US. We also present estimates of the …