Simorangkir L. ANALISIS PERBANDINGAN KINERJA ANTARA PORTOFOLIO OPTIMAL MODEL MARKOWITZ DAN MODEL INDEKS TUNGGAL (COMPARATIVE ANALYSIS OF PERFORMANCE BETWEEN OPTIMAL PORTOFOLIO MARKOWTIZ MODEL AND SINGLE INDEX MODEL) . JABK [Internet]. 1 Desember 2021 [dikutip 14 Juli 2026];8(3):384-401. Tersedia pada: https://jurnal.unkris.ac.id/index.php/jabk/article/view/380