Increasingly, retailers have access to better pricing technology, especially in online markets. Firms employ automated pricing algorithms that allow for high-frequency price changes. What are the implications for price competition? We develop a model of price competition where firms can differ...

I study the role of purely financial players in electricity markets, where they trade alongside physical buyers and sellers. In this context, physical sellers intertemporally price discriminate, leading to price differences that financial traders arbitrage, thus restricting producers' market...

Standard models of collusion require that all firms are forward-looking and strategic. When one firm displays naive behavior—i.e., when it is myopic, memoryless, or non-strategic—typical collusive strategies cannot be supported in equilibrium. Motivated by the increasing adoption of...