We prove that locally, Walras' law and homogeneity characterize the structure of market excess demand functions when financial markets are incomplete and assets' returns are nominal. The method of proof is substantially different from all existing arguments as the properties of individual demand...

For a general class of pure exchange OLG economies under uncertainty, we provide a complete characterization of the efficency properties of competitive equilibria when markets are only sequentially complete and the criterion of efficency is conditional Pareto optimality. We also consider a...

This paper studies the conditions for aggregation, portfolio separation and effective completeness of competitive allocations in general equilibrium models with incomplete markets where agents have general preference and endowment distributions. We show that these properties are distinct....

In many countries, lenders are not permitted to use information about past defaults after a specified period of time has elapsed. The authors model this provision and determine conditions under which it is optimal. ; They develop a model in which entrepreneurs must repeatedly seek external funds...

We study a strategic model of dynamic trading where agents are asymmetrically informed over common value sources of uncertainty. There is a continuum of buyers and a finite number n of sellers. All buyers are uninformed, while at least one seller is privately informed about the true state of the...

In many countries, lenders are not permitted to use information about past defaults after a specified period of time has elapsed. We model this provision and determine conditions under which it is optimal.We develop a model in which entrepreneurs must repeatedly seek external funds to finance a...

We investigate the trade-off, arising in financial networks, between higher risksharing and greater exposure to contagion when the connectivity increases. We find that with shock distributions displaying "fat" tails, extreme segmentation into small components is optimal, while minimal...

We study a general equilibrium model in which firms choose their capital structure optimally, trading off the tax advantages of debt against the risk of costly default. The costs of default are endogenous: bankrupt firms are forced to liquidate their assets, resulting in a fire sale if there is...