Maulana, E.D., Sumarminingsih, E. , Nurjannah, Astuti, A.B. and Astutik, S. 2026. Bayesian IGARCH Modeling of Jakarta Composite Index Volatility Using Hamiltonian Monte Carlo Algorithm. Science and Technology Indonesia. 11, 1 (Jan. 2026), 261–279. DOI:https://doi.org/10.26554/sti.2026.11.1.261-279.