Reviewing the definition and measurement of speculative bubbles in context of contagion, this paper analyses the DotCom bubble in American and European equity markets using the dynamic conditional correlation (DCC) model proposed as on one hand as an econometrics explanation and on the other...

This paper shows that the LM statistic for testing first order serial correlation in regression models can be computed using the Kalman Filter. It is shown tha.t when there are missing observations, the LM statistic for this tesi is equivalent to the tesi statistic derived by Robinson (1985)...

The aim of this paper is to set out criteria for defining trend and seasonal components in a time series. The criteria are set up primarily in terms of properties involving prediction. Because a structural time series model is set up in terms of components of interest, the relevant information...

This paper analyses monthly returns of 10 share portfolios negotiated at Bovespa between 1987 and 1997 in order to test the APT model. Macroeconomic factors were created as sources of common variance of these assets. The factors were statistically significant in explaining the relationship...

This article analyses the evolution of relative per capita income distribution of Brazilian municipalities over the period 1970-1996. Analyses are based on non-parametric methodologies and do not assume probability distributions or functional forms for the data. Two convergence tests have been...

It is shown that the ML estimates of the popular GARCH(1,1) model are significantly negatively biased in small samples and that in many cases converged estimates are not possible with Bollerslev's non-negativity conditions. Results also indicate that a high level of persistence in GARCH(1,1)...

O objetivo deste trabalho é investigar se a relação entre a taxa de câmbio spot e o fluxo de ordens deriva do fato do fl uxo agregar informações a respeito dos fundamentos econômicos dispersos na economia. Para efetuar este teste foi utilizada uma base de dados que engloba todas as...

This paper investigates the implications of the credit channel of the monetary policy transmission mechanism in the case of Brazil, using a structural FAVAR (SFAVAR) approach. The term structural comes from the estimation strategy, which generates factors that have a clear economic...

In this article, we test the hypothesis of contagion amongst sectors within the United States' economy during the subprime crisis. The econometric methodology applied here is based on the dynamic conditional correlation model proposed by Engle (2002). Further, we applied several Lagrange...