Nonlinearity and efficiency dynamics of foreign exchange markets: evidence from multifractality and volatility of major exchange rates

Volatility in Foreign Exchange Rates

Four foreign exchange spot rate series, recorded on an hourly basis for a six-month period in 1986 are examined. A seasonal GARCH model is developed to describe the time-dependent volatility apparent in the percentage nominal return of each currency. Hourly patterns in volatility are found to be remarkably similar across currencies and appear to be related to the opening and closing of the worl...

Nonlinearity In Exchange Rates and Forecasting

The Influence of Structural Changes in Volatility on Shock Transmission and Volatility Spillover among Iranian Gold and Foreign Exchange Markets

Volatility Dynamics in Foreign Exchange Rates: Further Evidence from Malaysian Ringgit and Singapore Dollar

The volatility dynamics of foreign exchanges have been the focus of research since Bollerslev’s (1986) seminal work on the generalized autoregressive conditional heteroscedasticity (GARCH) modelling. Several well-established empirical regularities may be highlighted as follows: [a] evidence of volatility clustering is detected in the exchange rates returns; [b] asymmetric effects in exchange ra...

Volatility Scaling in Foreign Exchange Markets

When distributions are non-Gaussian or display linear dependence it may not be appropriate to annualise the risk coefficient determined by the linear rescaling of the variance from other time intervals. This paper investigates the scaling relationships for daily spot foreign currency returns: the Deutsche markU.S. dollar (DMK/USD), the Swiss franc-USD (SWF/USD), the Japanese yen-USD (JPY/USD), ...