Impact of Macro Shocks on Sovereign Default Probabilities

Marco Matsumura

No 173, Discussion Papers from Instituto de Pesquisa Econômica Aplicada - IPEA

Abstract: We use macro finance models to study the interaction between macro variables and the Brazilian sovereign yield curve using daily data. We calculate the model implied default probabilities and a measure of the impact of macro shocks on the probabilities. An extension of the Dai-Singleton identification strategy for Gaussian models with latent and observable factors is described in order to estimate our models. Among the tested variables, VIX is the most important macro factor affecting short term bonds and default probabilities and the Fed short rate is the most important factor affecting the long term default probabilities. Utilizamos modelos de macrofinanças para estudar a interação entre variáveis macro e a curva de juros soberana brasileira usando dados diários. Calculamos as probabilidades de default implícitas do modelo e uma medida do impacto de choques macro nas probabilidades. Uma extensão da estratégia de identificação de Dai e Singleton para modelos gaussianos com fatores latentes e observáveis foi descrita de modo a estimar nossos modelos. Entre as variáveis testadas, VIX é o fator macro mais importante afetando títulos e probabilidades de default de curto prazo, e a taxa curta do Federal Reserve (Fed) é o fator mais importante que afeta probabilidades de longo prazo.

Pages: 56 pages
Date: 2015-01
New Economics Papers: this item is included in nep-mac
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