Does seller concentration in a market raise prices? Many attempts have been made to test this classic hypothesis of oligopoly theory, none of them convincing. L

Sunk Costs and Market Structure bridges the gap between the new generation of game theoretic models that has dominated the industrial organization literature ov

A Financial Times Book of the Year A ProMarket Book of the Year “Superbly argued and important...Donald Trump is in so many ways a product of the defective ca

We combine a structural model with cross-sectional micro data to identify the causes and consequences of rising concentration in the US economy. Using asset pri