Intraday return predictability has firstly been identified in the equity markets, and we extend the analysis to the crude oil market by using high-frequency United States Oil Fund data from 2006 to 2018. We find a different intraday prediction pattern in the oil market, where only the first...

This study used dummy variables to measure the influence of day-of-the-week effects and structural breaks on volatility. Considering day-of-the-week effects, structural breaks, or both, we propose three classes of HAR models to forecast electricity volatility based on existing HAR models. The...