This study aims to determine the impact of the Indonesian Presidency's G20 agenda on the stock prices and stock volumes in the coal mining sector in Indonesia. It considers a sample of stocks from the coal mining sector that implement Environmental, Social, and Governance (ESG) principles, selected through purposive random sampling. The research employs a quantitative descriptive method, comparing the stock prices and stock volumes before and after the Indonesian Presidency's G20 agenda took place in Bali, Indonesia. This comparison is made using paired t-tests, Wilcoxon signed-rank tests, or sign tests. The results reveal significant differences in stock prices and stock volumes before and after the Indonesian Presidency's G20 agenda. This suggests that the G20 agenda led by the Indonesian Presidency has influenced stock prices and stock volumes in the coal mining sector. Given these findings, it is recommended that management invests further in initiatives to increase investor trust. Additionally, the Financial Services Authority (OJK) is advised to develop appropriate policies for capital market supervision, aligning with the objectives of the Indonesian Presidency's G20 agenda, particularly regarding the implementation of ESG principles in Indonesia.