Widuhung, S.D. et al. 2026. Integrating Sharia Principles into Portfolio Optimization: Empirical Evidence from the Indonesian Islamic Capital Market. MIX: JURNAL ILMIAH MANAJEMEN. 16, 1 (Mar. 2026), 126–136. DOI:https://doi.org/10.22441/jurnal_mix.2026.v16i1.009.