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Foreign currency bubbles

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Abstract

This paper develops a new model for studying foreign currency exchange rate bubbles. The model constructed is a modification of the martingale based bubble approach of Jarrow et al. (Adv Math Finance 105–130, 2006; Math Finance 20(2):145–185, 2008). This model generates some new insights into our understanding of exchange rate bubbles and it can be utilized empirically to test for their existence. The new insights are: (1) exchange rate bubbles can be negative, in contrast to asset price bubbles, (2) exchange rate bubbles are caused by price level bubbles in either or both of the relevant countries’ currencies, and (3) price level bubbles decrease the expected inflation rate in the domestic economy.

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Authors and Affiliations

  1. Johnson Graduate School of Management, Cornell University, Ithaca, NY, 14853, USA

    Robert A. Jarrow

  2. Kamakura Corporation, Ithaca, NY, USA

    Robert A. Jarrow

  3. School of Operations Research, Cornell University, Ithaca, NY, 14853, USA

    Philip Protter

Authors
  1. Robert A. Jarrow
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  2. Philip Protter
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Correspondence to Robert A. Jarrow.

Additional information

Supported in part by NSF grant DMS-0906995.

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Jarrow, R.A., Protter, P. Foreign currency bubbles. Rev Deriv Res 14, 67–83 (2011). https://doi.org/10.1007/s11147-010-9055-0

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  • DOI: https://doi.org/10.1007/s11147-010-9055-0

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