RAYA, NUR AISYAH MEUTHIA (2025) Perbandingan Portofolio Optimal Metode Downside Deviation dan Markowitz dengan Evaluasi Kinerja melalui Indeks Sharpe pada Saham Blue Chip BEI 2020-2024 = Comparison of Optimal Portfolios Using the Downside Deviation and Markowitz Methods with Performance Evaluation through the Sharpe Index on Blue-Chip Stocks Listed on the Indonesia Stock Exchange from 2020-2024. Skripsi thesis, Universitas Hasanuddin.