ARIANTARA, Made Arvin; OKTAYANTI, Ni Putu Riza; ASTAWA, I Made; RAHIM, Laode. Application of The Single Index Model to Determine Optimal Portfolio Composition in IDXG30 Stocks (2021-2024). Journal of Economics and Management Scienties, [S. l.], v. 7, n. 4, p. 564–570, 2025. DOI: 10.37034/jems.v7i4.190. Disponível em: http://jems.ink/index.php/JEMS/article/view/190. Acesso em: 20 jan. 2026.