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Asymmetry and Risk Premia in the Brazilian Term Structure of Interest Rates

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Author(s): Marcelo Ganem | Tara Keshar Nanda Baidya

Journal: Revista Brasileira de Finanças
ISSN 1679-0731

Volume: 9;
Issue: 2;
Start page: 277;
Date: 2011;
Original page

Keywords: Risk premium | Asymmetry | Term structure of interest rates

ABSTRACT
The risk premium in the Brazilian term structure of interest rates is partially driven by some specific defensive behavior following past monetary decisions. Until 2008, the Brazilian Central Bank has primarily dealt with domestic and external crises by raising the short term rate to restrain capital outflows, generating a well-known asymmetry in the market’s response functions to risk aversion. Therefore, the traditional parameterization of risk based on mean and variance estimators fails to capture the market price of risk eventually assigned to higher order moments of bond returns across several maturities. In this paper we propose an arbitrage-free, discrete-time model that provides the form for a lagged endogenous regression which tests the significance and magnitude of the market price of asymmetry in the Brazilian fixed income market. The results are analyzed from a historical perspective, comparing the evolution of the price of asymmetry, the improvement of Brazil’s sovereign risk and the monetary policy conduction from 2003 to 2009.
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