NIYAWATI, A.; SETIYONO, W. P. Analysis of Optimal Portfolio Formation Using a Single Index Model as a Basis for Investment Decision Making [Study on the Jakarta Islamic Index (JII) 2015-2017]: Analisis Pembentukan Portofolio Optimal Menggunakan Model lndeks Tunggal Sebagai Dasar Pengambilan Keputusan Investasi [Studi Pada Jakarta Islamic Index (JII) Tahun 2015-2017]. Proceedings of The ICECRS, [S. l.], v. 9, 2021. DOI: 10.21070/icecrs2021893. Disponível em: https://icecrs.umsida.ac.id/index.php/icecrs/article/view/893. Acesso em: 13 sep. 2025.