Penelitian ini bertujuan untuk mengetahui pengaruh Nilai Tukar Rupiah, BI Rate dan Inflasi terhadap Indeks Harga Saham Gabungan di Bursa Efek Indonesia periode tahun 2017-2021. Penelitian ini merupakan penelitian Time Series dengan objek Indeks Harga Saham Gabungan (IHSG) di Bursa Efek Indonesia. Data yang digunakan adalah data sekunder. Metode analisis yang digunakan adalah metode kuantitatif dengan pendekatan deskriptif. Alat analisis yang digunakan dalam penelitian ini adalah analisis regresi linear berganda yang dilakukan dengan menggunakan aplikasi SPSS 23. Berdasarkan hasil analisis regresi berganda diperoleh Y=13.478,586-0,567X1+287,613X2+309,13X3+e. Hasil penelitian ini menunjukkan bahwa nilai koefisien determinasi (R2) sebesar 0,278 yang berarti variabel independen mempengaruhi variabel dependen sebesar 27,8% dan sisanya yaitu 72,2% dipengaruhi oleh variabel lain diluar penelitian ini. Kesimpulan dari penelitian ini adalah hasil Uji F menunjukkan bahwa variabel independen Nilai Tukar Rupiah, BI Rate dan Inflasi secara simultan berpengaruh signifikan terhadap Indeks Harga Saham Gabungan (IHSG). Hasil Uji t menunjukkan bahwa variabel Nilai Tukar Rupiah, BI Rate dan Inflasi secara parsial berpengaruh signifikan terhadap Indeks Harga Saham Gabungan (IHSG).

Kata kunci : Nilai Tukar Rupiah, BI Rate, Inflasi dan Indeks Harga Saham Gabungan (IHSG)

This study aimed to determine the effect of Rupiah Exchange Rate, BI Rate and Inflation toward the Composite Stock Price Index on Indonesia Stock Exchange for the period of 2017-2021. This research was a Time Series study with the object of the Composite Stock Price Index (CSPI) on Indonesia Stock Exchange. The data used was secondary data. The analysis method used was a quantitative method with a descriptive approach. The analysis used in this study was multiple linear regression analysis performed using the SPSS 23 application. Based on the results of multiple regression analysis obtained Y-13.478,586- 0,567X1+287,613X2+309,13X3+e. The results of this study showed that the determination coefficient value (R2) was 0.278 which means that the independent variable affected the dependent variable by 27.8% and the remaining of 72.2% was influenced by other variables outside of this study. The conclusion of this study was that the results of F-Test showed that the independent variables of Rupiah Exchange Rate, BI Rate and Inflation simultaneously had a significant effect on the Composite Stock Price Index. Moreover, the results of t-test showed that the variables of Rupiah Exchange Rate, BI Rate and Inflation partially had a significant effect toward the Composite Stock Price Index (CSPI). Keywords: Rupiah Exchange Rate, BI Rate, Inflation and Composite Stock Price Index (CSPI).