In this paper we analyse price fluctuations with the aim of measuring how long the market takes to adjust prices to weak-form efficiency, i.e., how long it takes for prices to adjust to a fractional Brownian motion with a Hurst exponent of 0.5. The Hurst exponent is estimated for different time...

We examine the relationship between oil and stock markets in Europe and the USA at the aggregate and sectoral levels using wavelet multi-resolution analysis. Wavelet decomposition of the original time series is useful in characterizing the oil–stock price relationship at different time scales,...

This paper examines gold's hedging and value-preserving properties against fluctuations in the US dollar. We propose a likelihood ratio test that draws a distinction between hedging and safe-haven characteristics on the basis of the conditional dependence structure under different market...

This paper studies the relationship between oil prices and US dollar exchange rates using wavelet multi-resolution analysis. We characterized the oil price–exchange rate relationship for different timescales in an attempt to disentangle the possible existence of contagion and interdependence...

This paper assesses the hedging and downside risk benefits of using gold for currency risk management at different investment horizons. Using wavelet multi-resolution analysis, we characterized market interdependence between gold and exchange rates for different time scales, finding positive...

This paper studies time durations between extreme returns with the aim of testing whether they follow power-law behaviour. Using the Hill estimator to identify extreme returns and estimate time durations, empirical evidence for intraday returns for the S&P 500, DAX and IBEX-35 stock market...