This article compares multivariate and univariate Generalized Autoregressive Conditional Heteroskedasticity (GARCH) models to forecast portfolio value-at-risk (VaR). We provide a comprehensive look at the problem by considering realistic models and diversified portfolios containing a large...

This paper assesses the relation between the yield curve and the main macroeconomic variables in the U.S. between early 1970s and 2000. We revisit the macro-finance model of Diebold et al. (2006) with the inclusion of a stochastic volatility structure for the latent factors and macroeconomic...

The identification of asymmetric conditional heteroscedasticity is often based on samplecross-correlations between past and squared observations. In this paper we analyse theeffects of outliers on these cross-correlations and, consequently, on the identification ofasymmetric volatilities. We...

This study proposes an application of two models based on non-classical logic, the paraconsistent logic and the fuzzy logic, in company profitability analysis. We conduct interviews with market specialists in order to identify the main explanatory variables related to company profitability and...

Este artigo aplica testes de cointegração para identificar pares de ações a serem usados numa estratégia pairs trading. Além de estimar as relações de equilíbrio de longo prazo e modelar os resíduos resultantes emprega-se um indicador de rentabilidade em simulações dentro da amostra...