This research aims to prove empirically the effects of foreign transactions which consist of foreign investment sell and buy and domestic transactions which consists of domestic sell and buy to Index Composite Exchange (IHSG). The populations in this study are all companies listed on the Indonesia Stock Exchange in 2013-2017, as the observation was conducted in said time period. Purposive sampling used with a total sample of 51 transactions (weekly transactions) per year observed. The value of transactions were taken from time series and obtrusive data collected from Bursa Efek Jakarta. Data analysis method used is multiple regression analysis.