. The results indicate that persistence is higher at lower frequencies, for both returns and their volatility. This is true …This paper investigates persistence in financial time series at three different frequencies (daily, weekly and monthly …

. The results indicate that persistence is higher at lower frequencies, for both returns and their volatility. This is true …This paper investigates persistence in financial time series at three different frequencies (daily, weekly and monthly …

The sum of squared intraday returns provides an unbiased and almost error-free measure of ex-post volatility. In this … paper we develop a nonlinear Autoregressive Fractionally Integrated Moving Average (ARFIMA) model for realized volatility …, which accommodates level shifts, day-of-the-week effects, leverage effects and volatility level effects. Applying the model …

This paper uses R/S analysis and fractional integration techniques to investigate persistence in the passion investment … Carat indices) or even random (Polished Prices Diamond Index). The dynamic R/S analysis also shows that persistence is time …

issue of estimation inaccuracy of the long memory parameter and the issue of spurious breaks in finite sample. Insights from … substantial improvement over existing prediction methods. An empirical application to the realized volatility of three exchange …

This paper examines the degree of persistence in UK inflation by applying long-memory methods to historical data that … detect any shifts in the degree of persistence, and also run rolling-window and recursive regressions to investigate its … evolution over time. On the whole, the evidence suggests that the degree of persistence of UK inflation has been relatively …