This study aimed to verify, between December 2005 and December 2006, the behavior of the credit rating systems of Brazilian Financial Institutions (FIs) regarding one of the main issues to be observed in the procedures for the credit rating system validation: the discriminant power of the...

In the 1990s, several emerging market countries have faced a cycle of large capital inflows followed by sharp reversals. This cycle occurred almost simultaneously to groups of these economies. Studies on this issue have restricted mostly to reversals, while this paper includes the phase of...

This paper presents an empirical analysis of the Brazilian interbank network structure. The Brazilian interbank market clearly presents a topology that is compatible to the free-scale networks. This market is characterized by money centers, which have exposures to many banks and are the most...

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...

Estimating potential output is at the same time one of the issues of greatest uncertainty in economics and greatest importance for policymakers, an unpleasant combination. This uncertainty fostered the emergence of several methods for calculating the potential output. In this work, the...

This paper deals with a macroeconomic coordination and its stabilization within a new Keynesian framework. The dynamic treatment of a twocountry model is made by simulation, using the linear quadratic algorithm. We compare the optimal monetary policy rule for three types of equilibria:...

One of the most challenging elements of the inflation-targeting framework is the exchange rate forecast. Wadhwani (1999) proposed a UIP, where real variables like the unemployment differential, the current account differential, and the excess return of financial assets affect the expected...

A general equilibrium model is built to explain if there are circumstances in which exchange rate risk smoothing (ERRS) policies may bring a Pareto-improvement for an indebted small open (home) economy. The model shows that this is the case when overpessimistic foreign creditors demand a large...

In this paper we examine the relation between dollar-real exchange rate volatility implied in option prices and subsequent realized volatility, in the period of February 1999 to June 2000. Our results are in line with recent literature, suggesting that the implied volatility obtained from a...

Within a mean-variance model we analyze the problem of decentralized portfolio management. We find the solution for the optimal portfolio allocation for a head trader operating in <i>n</i> different markets, which is called the optimal centralized portfolio. However, as there are many traders...