Time Series Modelling of Daily Log-Price Ranges for Sf/Usd and Usd/Gbp
35 Pages Posted: 23 Jul 2002
Date Written: June 29, 2002
Abstract
The aim of this paper is to model the dynamic evolution of daily log-price ranges for two foreign exchange rates, SF/USD and USD/GBP. Following Chou (2001),we adopt the CARR model, which is identical to the ACD model of Engle & Russell (1998). Log-price ranges are highly efficient measures of daily volatilities and hence our empirical results provide insights into the volatility dynamics for SF/USD and USD/GBP. We find that both series are highly persistent, and in particular, USD/GBP calls for a long memory specification in the form of a fractionally integrated CARR model. Semi-parametric and parametric models are estimated, and the parametric (fractionally integrated) CARR with a Gamma distribution is the preferred model. However, the estimation results of the simple semi-parametric procedure (QMLE) are virtually identical to the results of the preferred parametric models.
Keywords: Daily Price Range, Foreign Exchange Rate Volatility, Persistency, CARR, FICARR
JEL Classification: C22, G15
Suggested Citation: Suggested Citation
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