Aldila S, Sasongko NP. ANALYSIS OF OPTIMAL PORTFOLIO PERFORMANCE USING MARKOWITZ MODEL AND SINGLE INDEX MODEL (CASE STUDY ON LQ45 INDICES). IHASJ [Internet]. 2022 Dec. 19 [cited 2026 May 28];5(1):25-34. Available from: https://training-ojs3-publikasi.mercubuana.ac.id/index.php/ihasj/article/view/10279