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Is it Worth Tracking Dollar/Real Implied Volatility?


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  • Sandro Canesso de Andrade
  • Benjamin Miranda Tabak


In this paper we examine the relation between dollar-real exchange rate volatility implied in option prices and subsequent realized volatility, in the period of February 1999 to June 2000. Our results are in line with recent literature, suggesting that the implied volatility obtained from a simple option-pricing model, although an upward-biased estimator of future volatility does provide information about volatility over the remaining life of the option, which is not present in past returns. Results are robust to the choice of two alternative time series models to explore information embedded in returns, a fixed volatility and a GARCH (1,1) model, even allowing for in-sample forecasts by the GARCH (1,1) model. Results are also robust to the choice of measuring realized volatility in two alternative ways.

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Bibliographic Info

Paper provided by Central Bank of Brazil, Research Department in its series Working Papers Series with number 15.

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Date of creation: Mar 2001
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Publication status: Published in Economia Aplicada (Brazilian Journal of Applied Economics), Vol. 5, no. 3 (Jul-Sep 2001).
Handle: RePEc:bcb:wpaper:15

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Cited by:
  1. Benjamin Miranda Tabak & Solange Maria Guerra & Eduardo José Araújo Lima & Eui Jung Chang, 2007. "The Stability-Concentration Relationship in the Brazilian Banking System," Working Papers Series 145, Central Bank of Brazil, Research Department.
  2. Mark R. Stone & W. Christopher Walker & Yosuke Yasui, 2009. "From Lombard Street to Avenida Paulista: Foreign Exchange Liquidity Easing in Brazil in Response to the Global Shock of 2008-09," IMF Working Papers 09/259, International Monetary Fund.


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