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Keywords:foreign exchange rates 

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Excess volatility of exchange rates with unobservable fundamentals

We present tests of excess volatility of exchange rates that impose minimal structure on the data and do not commit to a choice of exchange rate "fundamentals." Our method builds on existing volatility tests of asset prices, combining them with a procedure that extracts unobservable fundamentals from survey-based exchange rate expectations. We apply our method to data for the three major exchange rates since 1984 and find broad evidence of excess volatility with respect to the predictions of the canonical asset-pricing model of the exchange rate with rational expectations.
Staff Reports , Paper 103

Report
Rational speculators and exchange rate volatility

This paper examines whether rational, fully informed speculators will smooth exchange rates. Friedman's (1953) claim that they must do so is challenged, based on the exclusion of interest rate differentials from his interpretation of speculator behavior. Once one recognizes that interest rates matter to speculators, it becomes apparent that rational speculators could sometimes violate Friedman's description of their behavior, and buy currency when its value is relatively high or sell currency when its value is low. For this reason the presence of rational, fully informed speculators may ...
Staff Reports , Paper 13

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