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To reduce risk in investment and at the same time optimize the returns, it is necessary to establish a series of stocks that have high returns, as well as to select a series of stock with negative variance to reduce the risk. In this research, an efficient frontier approach by Harry Markowitz will be applied to JII shares during the period 2009 2019 so that a portfolio with a low risk and optimal return can be formed to reduce risk and optimize return.

RISK AND RETURN MANAGEMENT OF SHARIA STOCKS IN JAKARTA ISLAMIC INDEX FOR THE PERIOD OF 2009 – 2019 USING MARKOWITZ PORTOFOLIO MANAGEMENT