ABSTRACT
The purpose of this research was to perform and analyze the optimal portfolio by using a Constant Correlation Model. The sample of this research was all securities in Jakarta Islamic Index Period 2018. This research used time series data from 2013 to 2018. The results showed that the optimal portfolio selection consisted of two securities that were TPIA and BPRT. The monthly return of portfolio was above the individual return and the risk of portfolio was below the individual risk. The portfolio performance index was positive and above the market.
