Estimation of Optimal Portfolio Return and Risk on the LQ-45 Index for the 2020-2022 Period Using the Capital Asset Pricing Model (CAPM) . JMSK [Internet]. 2023 May 5 [cited 2026 Aug. 8];19(3):506-19. Available from: https://journal-598.unhas.ac.id/index.php/jmsk/article/view/25005