This article checks for the adequacy of using GARCH models in exchange rate series. Using the Hinich portmanteau bicorrelation test, we find that a GARCH formulation or any of its variants fails to capture the data generating process of the main Latin American exchange rates. Our results...

In this article we check for nonlinear behaviour of the 10 most important Latin American emerging market bonds spreads. Applying the Hinich portmanteau bicorrelation test, the BDS test and the Engle LM test, we observe systematic nonlinear structure in the spreads series. Our results suggest...