USE OF THE SINGLE INDEX MODEL IN DETERMINING INVESTMENT DECISIONS BEFORE AND AFTER THE GOVERNMENT ANNOUNCEMENT REGARDING THE COVID-19 PANDEMI (STUDY ON MANUFACTURING SECTOR SHARIA STOCKS REGISTERED IN ISSI 2018-2022)
Keywords:Single Index Model, Investment, Sharia Stocks, ISSI, Covid-19
This study aims to determine stock investment decisions before and after the government's announcement about Covid-19 using a single index model. The population in this study were all sharia stocks of manufacturing companies in the ISSI market index on the IDX which were selected based on a purposive sampling technique. Data analysis is performed using a single index model that starts by collecting the closing stock prices of each to obtain the optimal portfolio. The results of this study indicate that there were 27 stocks that were included in the optimal portfolio at the time before the government's announcement about covid-19, including: ALKA, APLI, ARNA, BRAM, BRPT, BTON, CEKA, CLEO, CPIN, EKAD, HOKI, ICBP, INCI , INDS, ISSP, JPFA, KBLI, KDSI, KICI, KINO, MARK, MLIA, SIDO, SMSM, SPMA, TPIA, and WOOD.