Violations of Uncovered Interest Rate Parity and International Exchange Rate Dependences

Matthew Ames, Guillaume Bagnarosa and Gareth William Peters
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Matthew Ames: Institute of Statistical Mathematics - University of Graduate Studies
Guillaume Bagnarosa: ESC [Rennes] - ESC Rennes School of Business
Gareth William Peters: UC Santa Barbara - University of California [Santa Barbara] - UC - University of California

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Abstract: The uncovered interest rate parity puzzle questions the economic relation existing between short term interest rate differentials and exchange rates. One would indeed expect that the differential of interest rates between two countries should be offset by an opposite evolution of the exchange rate between them, hence ruling out any limited risk profit opportunities. However, it has been shown empirically that this relation is not holding and accordingly has led, over the past two decades, to the reinforcement of a well-known trading strategy in financial markets, namely the currency carry trade. This paper investigates how highly leveraged, mass speculator behaviour affects the dependence structure of currency returns. We propose a rigorous statistical modelling approach using two complementary techniques in order to demonstrate that speculative carry trade volumes are informative in both the covariance and tail dependence of high and low interest rate currency returns, whereas the price based factors previously suggested in the literature hold little explanatory power. We add a new feature to the understanding of the link between the UIP condition and the carry trade strategy, specifically attributed to the large joint exchange rate movements in high and low risk environments.

Date: 2015-07-23
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Published in SSRN Electronic Journal, 2015, ⟨10.2139/ssrn.2638163⟩

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-04272189

DOI: 10.2139/ssrn.2638163

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