This paper explores the general equilibrium impact of social security portfolio diversification into private securities, either through the trust fund or via private accounts. The analysis depends critically on heterogeneity in saving, in production, in assets, and in taxes. Under fairly general...

We study transactions that require investments before trading in a competitive market, when forward contracts fixing the transaction price are absent. We show that, despite the market being perfectly competitive and subject to arbitrarily little uncertainty, the inability to jointly determine...

This paper shows the robust non existence of competitive equilibria even in a simple three period representative agent economy with dynamically inconsistent preferences. We distinguish between a sophisticated and naive representative agent. Even when underlying preferences are monotone and...

This essay reviews the family of models that seek to provide aggregate risk based explanations for the empirically observed equity premium. Theories based on non-expected utility preference structures, limited financial market participation, model uncertainty and the small probability of...

En este trabajo se desarrolla un modelo de equilibrio general en una economia con agentes identicos. Estos agentes son racionales y toman decisiones de portafolio y consumo. Bajo los supuestos de que existe una accion cuyo precio es conducido por un movimiento geometrico Browniano y la...

This paper explores the importance of accessible and focal information in influencing beliefs and attention in a learning-to-forecast laboratory experiment where subjects are incentivized to form accurate expectations about inflation and the output gap. We consider the effects of salient and...

En esta investigación se desarrolló un modelo de economía estocástica, pequeña y abierta, poblada por consumidores racionales idénticos que tienen vida finita, pero estocástica; además, son adversos al riesgo y disponen de una riqueza inicial. Estos agentes enfrentan la decisión de...

Can monetary or fiscal policy stabilize expectations in a liquidity trap? We study expectation formation near the zero lower bound using a learning-to-forecast laboratory experiment. Monetary policy targets inflation around a constant or state-dependent target. Subjects’ expectations...

This paper describes the equilibrium of a discrete-time exchange economy in which consumers with arbitrary subjective discount factors and quasi-homothetic period utility functions follow linear Markov consumption and portfolio strategies. Explicit expressions are given for state prices and...

Many consumers care about climate change and other externalities associated with their purchases. We analyze the behavior and market effects of such "socially responsible consumers" in three parts. First, we develop a flexible theoretical framework to study competitive equilibria with rational...