We establish necessary and sufficient conditions for the individual optimality of a consumption-portfolio plan in an infinite horizon economy where agents are uniformly impatient and fiat money is the only asset available for inter-temporal transfers of wealth. Next, we show that fiat money has...

We analyze inflation persistence in several industrial and emerging countries in the recent past by estimating reduced-form models of inflation dynamics. We select a very representative group of 23 industrial and 17 emerging economies. Our sample period is comprised of quarterly data and starts...

It is well known that, under uniform impatience, positive net supply assets are free of bubbles for non-arbitrage kernel deflators that yield finite present values of wealth. However, this does not mean that prices cannot be above the series of deflated dividends for the deflators given by the...

When infinite-lived agents trade long-lived assets secured by durable goods, equilibrium exists without any additional debt constraints or uniform impatience conditions on agents’ characteristics. Also, price bubbles are absent when physical endowments are uniformly bounded away from zero.

Despite of its popularity, empirical studies have failed to find evidence of the causal effect of a country's adoption of the Inflation Targeting regime on that country's inflation rate decline. This paper applies the multi-period differences-in-differences estimation to the quarterly CPI...

This paper tests the Rational Expectations Hypothesis in Brazil from July 1996 to December 2001 for maturities ranging from 1 day to 1 year. It shows that (i) the estimated coefficients in the regressions of the short-run changes of the long rate on the yield spread and in the regressions of the...

This paper assesses inflation targeting in emerging market economies (EMEs), and develops applied prescriptions for the conduct of monetary policy and inflation-targeting design in EMEs. We verify that EMEs have faced more acute trade-offs - higher output and inflation volatility - and worse...

A two-parameter family of filters is proposed in which the HP filter is considered as the lowest order member. While the HP filter converges to linear time trend as the smoothing factor grows, the higher order members of the proposed family converge to higher order polynomial time trends. The...

Historical models are being quite used in the value at risk (VaR) estimation due to the fact that many returns of financial assets cannot be described by a theoretical distribution. In these models, each observation of the past can be a possible scenery and for each scenery there is a price for...