This article provides a systematic analysis of the welfare effects of vertical integration by a monopolist input supplier into a monopolistically competitive downstream industry. We give sufficient conditions on consumer preferences that lead to Pareto-improving vertical integration and...

This paper considers cost-reducing R&D investment with spillovers in a Cournot oligopoly with minority shareholdings. We find that, with high market concentration and sufficiently convex demand, there is no scope for cross-ownership to improve welfare regardless of spillover levels. Otherwise,...

In the context of supply function competition with private information, we test in the laboratory whether - as predicted in Bayesian equilibrium - costs that are positively correlated lead to steeper supply functions and less competitive outcomes than do uncorrelated costs. We find that the...