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Inflation breakeven in the Jarrow and Yildirim model and resulting pricing formulas

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  • Alessandro Cipollini
  • Paul Canty

Abstract

The Jarrow and Yildirim model for pricing inflation-indexed derivatives is still the main reference technique adopted in the inflation market. Despite its popularity it has some shortcomings, the most immediate of which is the difficulty of calibrating to market prices of options due to the large number of parameters involved. Since the market trades options on the inflation rate or index, we reformulate their model in terms of the notion of breakeven inflation. The first main advantage is the possibility of describing the prices of the most popular inflation derivatives as functions of just three parameters: breakeven volatility, the volatility of the CPI price index and the correlation between them. Secondly, the resulting Black--Scholes-implied volatilities are very straightforward to implement and the geometric interpretation of the model makes it intuitive to calibrate. Lastly, the model permits us to reproduce a realistic picture of the current state of the art of the derivatives market and, in particular, due to its simplicity, it is able to estimate the risk premium priced by the inflation market.

Suggested Citation

  • Alessandro Cipollini & Paul Canty, 2013. "Inflation breakeven in the Jarrow and Yildirim model and resulting pricing formulas," Quantitative Finance, Taylor & Francis Journals, vol. 13(2), pages 205-226, January.
    • Handle: RePEc:taf:quantf:v:13:y:2013:i:2:p:205-226
    DOI: 10.1080/14697688.2010.503711
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