Stocks as an investment instrument that categorized as a high risk dan high return instrument. Therefore, investors should distributed their invesment funds in a number of shares by forming an optimal portfolio where the highest return is obtain at a certain risk or the lowest risk at certain return. On this study the portfolio forming used the Single Index Model. Portfolio formed from stocks at LQ 45 Index and Kompas 100 Index by aim to get the comparison of their performance.The result of this study indicate that LQ 45 portfolio that containing PTBA, ICBP, BBCA, PGAS and ANTM has a lower return than Kompas 100 portfolio that containing KREN,CPIN, PTBA and JFPA. The performance of both portfolio that analyze by Sharpe Index, Treynor Index and Jensen Index indicate that portfolio of Kompas 100 better than portfolio of LQ 45 , however both of them showed the good performance because their result are positif that mean better than market. Keywords: Portfolio, Single Index Model, Sharpe Index, Treynor Index, Jensen Index.

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For public investors, the return becomes the appeal for investors to purchase and sell the stocks in the capital market. Fundamentally, in their analysis, they must consider macroeconomic factors, i.e., foreign exchange, interest, and inflation rates. This study investigates and analyzes these factors as the determinant of stock return. The return intended is owned by the Indonesian capital market-listed banks selected as Kompas 100 Index constituents. Eight years are used as time observation, i.e., from 2015 to 2022. Based on this period, 11 banks exist as the samples. Then, this study utilizes the regression model to analyze the data associated with hypothesis testing. After examining the hypotheses, this study concludes a negative relationship between the exchange rate of IDR/USD on banking stock return: The more weakened the IDR/USD, the lower the stock return. Similarly, this negative sign also happens in the relationship between interest rate and stock return. Conversely, inflation positively affects this return.