Real Yield Variability: A Simple Explanation for the UIRP and Related 'Puzzles' in International Finance
103 Pages Posted: 28 Feb 2014
Date Written: December 31, 2013
Abstract
I derive a dynamic version of the Dornbusch “overshooting” model in which real yields and inflation vary stochastically, and the exchange rate (FX) delivers UIRP in expectations. Tests using the model provide support for the UIRP proposition. Simulations show that the “disconnect” of FX rates from fundamentals as well as their very high volatility is a necessary consequence of UIRP when real yields are autocorrelated. I also show that FX rates display some predictability as required by the model. Finally, the model shows that the statistical patterns on which “carry trade” is based are consistent with equilibrium.
Keywords: Exchange rates, puzzles, UIRP, real yields, overshooting, predictability, carry trade
JEL Classification: EFF, E47, F31, F41
Suggested Citation: Suggested Citation