We study the quantitative properties of a dynamic general equilibrium model in which agents face both idiosyncratic and aggregate income risk, state-dependent borrowing constraints that bind in some but not all periods and markets are incomplete. Optimal individual consumption -savings plans and...

Was the increase in income inequality in the US due to permanent shocks or merely to an increase in the variance of transitory shocks? The implications for consumption and welfare depend crucially on the answer to this question. We use CEX repeated cross-section data on consumption and income to...

We use CEX repeated cross-section data on consumption and income, to evaluate the nature of increased income inequality in the 1980s and 90s. We decompose unexpected changes in family income into transitory and permanent, and idiosyncratic and aggregate components, and estimate the contribution...

We show that the Heston volatility or equivalently the Cox-Ingersoll-Ross process is Malliavin differentiable and give an explicit expression for the derivative. This result assures the applicability of Malliavin calculus in the framework of the Heston stochastic volatility model and the...

In this paper we study the dynamic behavior of the term structure of Interbank interest rates and the pricing of options on interest rate sensitive securities. We posit a generalized single factor model with jumps to take into account external influences in the market. Daily data is used to test...

An affine asset pricing model in which agents have rational but heterogeneous expectations about future asset prices is developed. We estimate the model using data on bond yields and individual survey responses from the Survey of Professional Forecasters and perform a novel three-way...

We see that the price of an european call option in a stochastic volatility framework can be decomposed in the sum of four terms, which identify the main features of the market that affect to option prices: the expected future volatility, the correlation between the volatility and the noise...

To recover a version of Barro's (1979) `random walk' tax smoothing outcome, we modify Lucas and Stokey's (1983) economy to permit only risk--free debt. This imparts near unit root like behavior to government debt, independently of the government expenditure process, a realistic outcome in the...

In this paper I develop a general equilibrium model with risk averse entrepreneurial firms and with public firms. The model predicts that an increase in uncertainty reduces the propensity of entrepreneurial firms to innovate, while it does not affect the propensity of public firms to innovate....

\documentstyle[portada,11pt]{article} This paper shows that the presence of private information in an economy can be a source of market incompleteness even when it is feasible to issue a set of securities that completely eliminates the informational asymmetries in equilibrium. We analyze a...