Accurate volatility modelling is paramount for optimal risk management practices. One stylized feature of financial volatility that impacts the modelling process is long memory explored in this paper for alternative risk measures, observed absolute and squared returns for high frequency intraday...

We use frequency-domain techniques, namely wavelets and cross-spectra, to examine the association between the daily prices of crude oil futures and daily S&P500 futures closing prices over the past several decades. We investigate contemporaneous and lag-lead relationships in levels and returns....

The growing interest in financial markets microstructure and the fact that financial professionals have access to huge intraday databases have made high-frequency data modelling a hot issue in recent empirical finance literature. We analyse the main issues that are at stake when analysing...