I establish an extension of the classical general equilibrium treatment of uncertainty about exogenous states to price uncertainty. Traders do not know the prices at which trade will occur, but have expectations over possible prices. They trade derivatives, price-contingent securities, to insure...

This paper presents a stochastic dynamic general equilibrium model calibrated for Venezuela that incorporates inter-sectorial relationships. With this model it is possible to assess the impact on the aggregate economic activity generated by productivity shocks or demand shocks to a specific...

We consider a Lucas asset-pricing model with heterogeneous agents, exogenous labor income, and a finite number of exogenous shocks. Although agents are infinitely lived, endowments and dividends are time-invariant functions of the exogenous shock alone and are thus restricted to lie in a...

We investigate an overlapping generations monetary economy in which agents'expectations depend upon backward looking predictors of the future price level.

In an incomplete asset market, firms assign values to investment plans by projecting their payoffs on the span of the payoffs of marketed assets; equivalently, firms employ the Capital Asset Pricing Model. This is a criterion that does not require firms to possess information, such as the...

We study competitive equilibrium in sequential economies under limited commitment. Default induces permanent exclusion from financial markets and endogenously determined solvency constraints prevent debt repudiation. Our analysis shows that such an enforcement mechanism is essentially fragile,...

I provide a complete characterization of equilibrium with risk of default in sequential economies under uncertainty. Default induces permanent exclusion from financial markets and not-too-tight solvency constraints prevent debt repudiation at equilibrium. The method of analysis relies on a...

The Lehman Brothers' bankruptcy triggered the failure of the collateralized debt markets, which was a major contributor of the financial crisis in 2008. Such collateralized debt markets have both collateral price channel and counterparty (borrower and lender) channel of contagion. I propose a...

In this paper we generalize Magill and Shafer (1990) analysis of generically complete markets in the presence of open ended horizon. Doing this we are faced with difficulties specific to the presence of infinitely many periods. Until now these difficulties did not allow any satisfactory...

We consider dynamic stochastic economies with heterogeneous agents and introduce the concept of uniformly self-justified equilibria (USJE)---temporary equilibria for which forecasts are best uniform approximations to a selection of the equilibrium correspondence. In a USJE, individuals'...