Principal decision-makers are sometimes obliged to rely on multiple sources of information when drawing conclusions about the desirability of given actions in response to decisions they face. They may hire specialized agents to inform their decisions. Principals have authority both to allow...

This paper studies how the presence of an antitrust authority affects market-sharing agreements made by firms in oligopolistic markets. These agreements prevent firms from entering each other´s market. The set of market-sharing agreements defines a collusive network, which is under suspicion by...