ANALISIS PORTOFOLIO OPTIMAL DENGAN MODEL INDEKS TUNGGAL PADA SAHAM MANUFAKTUR DI BEI

Abstract

This research aimed to find out how to have a portfolio optimally by using Personal Index Model as consideration in decision
making of stock investment in the capital market. The research was quantitative. The population was 195 manufacturing
companies which were listed on Indonesia Stock Exchange during 2018-2020. Moreover, the data collection technique used
purposive sampling. Furthermore, the data were Composite Stock Price Index, dividend, personal stock price, and interest
rate of Ownership of Bank Indonesia Certificate during 2018-2020. The counting was done by comparing the profit level
(E(Rp)) and risk level (σp) from a sample. Additionally, the research result concluded that 5 companies'samples were the
optimal portfolio forming stock which combined into 10 portfolios and each of them consisted of 2 stocks. The optimal
portfolio was in the ninth portfolio, i.e. stock combination of PT. Indospring Tbk (INDS) and PT. Ekadharma International
Tbk (EKAD. This portfolio has a stock proportion of 50%: 50% with profit level of 0.2365 and its risk of 0.001645. With the
proportion, there would be the higher profit level from all proportions with the lowest risk level from all proportions.