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The Term Structure of Volatility Implied by Foreign Exchange Options


This paper illustrates regression and Kalman filtering methods for estimating the time-varying term structure of volatility expectations revealed by options prices. Short- and long-term expectations are estimated for four currencies using daily PHLX options prices from 1985 to 1989. Throughout this period, there were important differences between shortand long-term expectations. The slope of the term structure changed frequently and there were significant variations in long-term volatility expectations. The expectation estimates can be used to value OTC options, to improve hedging strategies, and to test the hypothesis that the options market overreacts.

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Journal of Financial and Quantitative Analysis
  • ISSN: 0022-1090
  • EISSN: 1756-6916
  • URL: /core/journals/journal-of-financial-and-quantitative-analysis
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