Intraday volatility spillovers between oil prices and stock sectors

This study examines intraday volatility spillovers between oil prices and sector indices of five oil exporting and nine oil importing countries applying the connectedness approach. The sample comprises 1689 stocks, from which ten sector indices are manually constructed utilising 5-min data covering the period from July 31, 2020, to April 30, 2021. Results indicate that the total volatility connectedness remains elevated following the peak phases of market turbulence during the global health crisis. Significant and dynamic volatility interdependencies are observed between oil and sector indices, with the direction and intensity of spillovers varying by country and sector. Oil serves as a primary net-contributor of volatility to sectors in Norway and the United Kingdom, while acting as a net-recipient from sectors in Canada and the United States. Sectors in Australia, China, Mexico, and South Korea exhibit minimal volatility interlinkages with oil.