SIDIQ, Ahmad; SUPRIHATI, Suprihati; DARMANTO, Darmanto. REVEALING THE ROLE OF SYSTEMATIC AND NON-SYSTEMATIC RISK IN ENHANCING OPTIMAL PORTFOLIO RETURNS IN GLOBAL STOCK MARKETS. International Journal of Economics, Business and Accounting Research (IJEBAR), [S. l.], v. 8, n. 4, 2024. DOI: 10.29040/ijebar.v8i4.16586. Disponível em: https://www.jurnal.stie-aas.ac.id/index.php/IJEBAR/article/view/16586. Acesso em: 1 aug. 2025.