Comparative Analysis of Optimal Portfolio Formation Using the Single Index Model and Black-Litterman Model on a Fixed Sample of IDX30 Constituents

This study compares the Single Index Model and the Black-Litterman model in forming an optimal stock portfolio on a fixed sample of recurrent IDX30 constituents in order to assess differences in portfolio composition, return, risk, and risk-adjusted performance in the Indonesian capital market. This study compares the Single Index Model and the Black-Litterman model in forming an optimal stock portfolio on a fixed sample of recurrent IDX30 constituents in order to assess differences in portfolio