This study uses signalling theory and purchasing power parity theory to determine the effect of world oil prices, interest rates, and exchange rates on company stock prices, with inflation as a moderating variable. As explanatory research with a quantitative approach, this study selects a sample of 29 Indonesian mining companies through a purposive sampling technique. Data analysis used E-Views 12 software, which included descriptive analysis, classic assumption test, panel data regression test, moderation regression test, hypothesis test (t-test), and determination test. The results of this study show that the variables of World Oil Prices and Interest Rates partially have a positive and significant effect on Stock Prices. Exchange rates have a negative and significant effect on stock prices, and inflation has no moderating effect on the world oil price, interest rate, and exchange rate on stock prices.
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