Kurniawan RF, Sari HMK. Analysis of Optimal Portfolio Formation During the Covid-19 Pademic Using the Capital Asset Pricing Model (CAPM) Model for IDX-30 Shares in the 2020 Period. ijins [Internet]. 2023Apr.24 [cited 2024Nov.21];22:10.21070/ijins.v22i.852. Available from: https://ijins.umsida.ac.id/index.php/ijins/article/view/852