We study cartels that operated in the US generic drug industry, leveraging quarterly Medicaid data from 2011-2018 and a difference-in-differences approach comparing the evolution of prices of allegedly collusive drugs with a group of competitive control drugs. Our analysis highlights (i) the...

We re-consider the bilateral bargaining problem of a multi-product, manufacturer-retailer trading relationship. O'Brien and Shaffer (Rand JE 35:573-598, 2005) have shown that the unbundling of contracts leads to downward distorted production levels if seller power is strong, while otherwise the...

We provide a theory of how RPM facilitate upstream cartels absent any information asymmetries using a model with manufacturer and retailer competition. Because retailers have an effective outside option to each manufacturer’s contract, the manufacturers can only ensure contract acceptance by...

We examine the relation between consumer search and equilibrium prices when collusion is endogenously determined. We develop a theoretical model and show that average price is a U-shaped function of the measure of searchers: prices are highest when there are no searchers (local monopoly power)...

We investigate how the structure of the distribution channel affects tacit collusion between manufacturers. When selling through a common retailer, we find - in contrast to the conventional understanding of tacit collusion that firms act to maximize industry profits - that colluding...