In this paper, an unrestricted aggregation method for heterogeneous log-linear functions is presented. It employs inequality measures derived from information theory in the construction of an exact representation of the aggregate behavior of the economy. A condition for the identification of...

The Value at Risk calculation for options has a lot of difficulties. The non-normality and the non-linearity of these assets cause sufficient unaccuracy in this measurement, mainly for the parametric models. The purpose of this article is to analyze the results of the VaR estimate for a...

This paper tests hyperinflation theories using the inflation tax curve. This curve is estimated directly instead of the usual approach which is a by-product of demand for money empirical estimates. The inflation tax functional form encompasses several specifications as particular cases and...

This paper employs new methods to measure and monitor risk in the Brazilian banking sector. We prove that the option-based risk measure is negatively sensitive to interest rates. As this is an important issue for emerging market economies, the risk measures are built as deviations from mean....

We provide approximation formulas for at-the-money asian option prices to extract volatility risk premium from a joint dataset of bonds and option prices. The dynamic model generates stochastic volatility and a time-varying volatility risk premium, which explicitly depends on the average cross...

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...