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This paper analyzes and compares range-based and return-based variance/covariance estimates. We provide new results on the relative efficiency of the range. We show that the use of the range is compatible with time varying volatilities and we extend the range to a multivariate setup. A new...
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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...
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