Mohamed Abdelwahab Mohamed Badawi, M.; Ng, S. L.; Ab Razak, R.; Rahman, S. F. Does Realised Range Volatility Improve Multivariate Volatility Forecasting? Evidence from Bursa Malaysia Sectors: DOI: Https: doi.org 10.33093 Ijomfa.2026.7.2.12. IJOMFA 2026, 7, 355-386.