Abstract
ABSTRACTThis article investigates the effects of sovereign credit rating announcements on time-varying exchange rate return correlations for a sample of 11 emerging market countries over the period 2002–2015. The data set covers daily exchange rates and long-term foreign currency sovereign ratings, outlooks and watch list. The pairwise time-varying correlations are derived by corrected Dynamic Conditional Correlation (cDCC) modelling which is a member of multivariate Generalized Autoregressive Conditional Heteroskedasticity (GARCH) models family. Furthermore, to capture the global factor effect, a dynamic-weighted index is created by using dynamic principal component (DPC) analysis. Findings suggest that some of the emerging market exchange rate co-movements are affected by rating announcements. Upgrades of Moody’s and downgrades of Fitch lead to spillovers. Main source of these spillovers are sovereign credit rating changes of European countries, especially Czech Republic and Turkey. Countries with high amount of external debt, large current account deficit and speculative grade are more prone to be influenced by announcements on a foreign country’s long-term sovereign rating.
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