Analisis Pembentukan Portofolio Saham Optimal Dengan Model Markowitz Sebagai Dasar Penetapan Investasi (Studi Pada Saham Yang Terdaftar Dalam Jakarta Islamic Index (JII) Di Bursa Efek Indonesia Periode Juni 2013 – November 2015)

This study aims to find stocks that are listed in the Jakarta Islamic Index (JII) at the Indonesia Stock Exchange were included in the optimal portfolio period June 2013-November 2015 along with the amount of the composition of each fund share in the formation of the optimal portfolio. The population used was all shares included in the JII totaling 40 shares. Mechanical sample selection using purposive sampling method and acquired 19 shares as samples. Methods of data analysis using a Markowitz model. Based on the analysis that has been done shows that: There are 7 stocks included in the composition of the optimal share of PT Astra Agro Lestari Tbk, PT AKR Tbk, Indofood CBP Sukses Makmur Tbk, Kalbe Farma Tbk, PT United Tractors Tbk, PT Unilever Indonesia Tbk, and Wijaya Karya (Persero) Tbk. The amount of the composition sufficient funds are invested in these stocks is WIKA with the composition of fund 1.71%, AALI with the composition of fund 6.79%, AKRA with the composition of fund 10.41%, ICBP with the composition of fund 10.93%, KLBF with the composition of fund 14.78 %, UNTR with the composition of fund 24.15%, and UNVR with the composition of fund 31.23%. The expected return of the portfolio E(Rp) of 0.0058 or 0.58% and portfolio risk at 0.0012 or 0.12%