Optimasi Portofolio Saham Menggunakan Model Markowitz Berdasarkan Prediksi Harga Saham. kaunia [Internet]. 2023 Feb. 20 [cited 2026 Mar. 21];18(1):35-40. Available from: https://ejournal.uin-suka.ac.id/saintek/kaunia/article/view/3948