We propose a rational theory of momentum and reversal based on delegated portfolio management. A competitive investor can invest through an index fund or an active fund run by a manager with unknown ability. Following a negative cashflow shock to assets held by the active fund, the investor...

I address the issue of the 'number' of International Monetary Equilibria that the international finance model of Geanakoplos and Tsomocos (2002) possesses. The mainstream competitive model has locally unique equilibria with respect to the real side of the economy; however, it manifests nominal...

We extend the standard model of general equilibrium with incomplete markets to allow for default and punishment. The equilibrating variables include expected delivery rates, along with the usual prices of assets and commodities. By reinterpreting the variables, our model encompasses a broad...

In this paper we analyze the welfare properties of the set of Drèze equilibria for economies with incomplete markets and firms. The well known fact that a Drèze equilibrium need not be constrained Pareto optimal is often attributed to a lack of coordination between firms. We show that there...

We study large finite club economies in which agents can belong to several clubs, and care about the characteristics of the other club members. Club memberships must be integer consistent in aggregate. We show that states in the approximate core can approximately be decentralized by prices for...

This paper analyses the consequences of trust for the general equilibrium in an exchange economy. Trust is viewed as a gift of information which modifies the caracteristics of goods a la Stigler-Becker. The increase in utility due to the increase in information is modified by its consequences on...