Optimal Portfolio Analysis of Private Pension Fund Investment in Indonesia: Markowitz Theory Approach (Efficient Frontier) and Single Index Model Theory. Dhana, [S. l.], v. 2, n. 1, p. 10–28, 2024. DOI: 10.62872/8tfcfs36. Disponível em: https://ejournal-nawalaedu.com/index.php/JD/article/view/1079. Acesso em: 30 nov. 2025.