Pricing the option adjust spread of Brazilian Eurobonds

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This paper presents results of a pricing system to compute the option adjusted spread ('DAS') of Eurobonds issued by Brazilian firms. The system computes the 'DAS' over US treasury rates taktng imo account the embedded options present on these bonds. These options can be calls ('callable bond'), puts ('putable bond') or combinations ('callable and putable bond'). The pricing model takes into account the evolution of the term structure along time, is compatible with the observable market term structure and is able to compute risk measures such as duration and convexity, and pricing and hedging of options on these bonds. Examples show the ejJects of the embedded options on the spread and risk measures as well as the ejJects on the spread due to variations on the volatility parameters ofthe short rate.

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