NELMI SARI; ARVINA WAHYUNI; MUHAMMAD IKHSAN HARAHAP. Pengaruh Diversifikasi Portofolio Saham Terhadap Risiko dan Return Menggunakan Data Indeks Sektoral BEI . Jurnal Ilmu Manajemen, Bisnis dan Ekonomi (JIMBE), [S. l.], v. 3, n. 6, p. 01–10, 2026. DOI: 10.59971/jimbe.v3i6.955. Disponível em: https://malaqbipublisher.com/index.php/JIMBE/article/view/955. Acesso em: 23 sep. 2026.