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The Dynamics of the Option-Adjusted Spread of Brady Bond Securities

Author

Listed:
  • Franklin de O. Gonçalves

    (Banco BBM)

  • Luiz Otavio Calôba

    (FGV)

Abstract

Brady bond securities represent a substantial fraction of emerging markets countries internationally tradable sovereign debt. The credit risk spread above and beyond the U.S. treasury curve for these securities is usually large in size and volatility. Moreover, most Brady bonds carry embedded options that lead to the existence of an Option-Adjusted Spread, OAS, which increase their risk profiles. In this paper we present an empirical study of the dynamics of Brady bonds OAS using a heath, Jarrow and Morton term structure pricing model. The dynamics of the spread shows that the proper risk management and pricing of these securities require the consideration of volatility in addition to the magnitude of the sovereign risk spread. That is, the proper risk measure for these securities would be the pair (OAS, OAS Volatility). A study of implied default probabilities is also presented. Our analysis is illustrated with bonds from Brazil, Argentina, Mexico, Poland, Bulgaria and the Philippines.

Suggested Citation

  • Franklin de O. Gonçalves & Luiz Otavio Calôba, 2003. "The Dynamics of the Option-Adjusted Spread of Brady Bond Securities," Brazilian Review of Finance, Brazilian Society of Finance, vol. 1(1), pages 89-112.
    • Handle: RePEc:brf:journl:v:1:y:2003:i:1:p:89-112
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    References listed on IDEAS

    as
    1. David Heath & Robert Jarrow & Andrew Morton, 2008. "Bond Pricing And The Term Structure Of Interest Rates: A New Methodology For Contingent Claims Valuation," World Scientific Book Chapters, in: Financial Derivatives Pricing Selected Works of Robert Jarrow, chapter 13, pages 277-305, World Scientific Publishing Co. Pte. Ltd..
    2. Shleifer, Andrei & Vishny, Robert W, 1997. "The Limits of Arbitrage," Journal of Finance, American Finance Association, vol. 52(1), pages 35-55, March.
    3. Vasicek, Oldrich, 1977. "An equilibrium characterization of the term structure," Journal of Financial Economics, Elsevier, vol. 5(2), pages 177-188, November.
    4. Amin, Kaushik I. & Morton, Andrew J., 1994. "Implied volatility functions in arbitrage-free term structure models," Journal of Financial Economics, Elsevier, vol. 35(2), pages 141-180, April.
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    More about this item

    Keywords

    pricing interest rate derivatives; credit risk; risk management; term structure models; Brady bonds;
    All these keywords.

    JEL classification:

    • G13 - Financial Economics - - General Financial Markets - - - Contingent Pricing; Futures Pricing
    • C63 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Computational Techniques
    • F34 - International Economics - - International Finance - - - International Lending and Debt Problems

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