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Analysis of Emerging Markets Sovereign Credit Spreads

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  • Marco S. Matsumura

Abstract

Our objective is to implement a credit risk pricing model for sovereign bonds and estimate the model for a historical series of yields of emerging markets bonds. We use a reduced model with a Vasicek 2-factor model on Brazilian sovereign data. The estimation occurs in two stages. Using Maximum Likelihood, we first estimate the parameters corresponding to the reference curve. Then, we find the estimates of the set of parameters corresponding to the defaultable curve conditional on the default- free parameters. The estimated model is used to calculate the dynamics of the term structure of interest rates, of credit spreads and of default probabilities. Nosso objetivo é implementar um modelo de apreçamento de títulos soberanos sujeitos a defaut e estimulá-lo usando uma série histórica de títulos de mercados emergentes. Usamos um modelo reduzido com uma dinâmica Vasicek 2-fatores sobre dados soberanos brasileiros. A estimação ocorre em duas etapas. Usando Máxima Verossimilhança, primeiro estimamos os parâmetros correspondentes à curva de referência. Em seguida, encontramos as estimativas do conjunto de parâmetros correspondentes à curva do título sujeito a default condicionado aos parâmetros da curva livre de default. O modelo estimado é usado para calcular a dinâmica da estrutura a termo de taxa de juros, de spreads de crédito e de probabilidade de default.

Suggested Citation

  • Marco S. Matsumura, 2015. "Analysis of Emerging Markets Sovereign Credit Spreads," Discussion Papers 0148, Instituto de Pesquisa Econômica Aplicada - IPEA.
  • Handle: RePEc:ipe:ipetds:0148
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