Journal of Economics Research and Policy Studies
Vol. 5 No. 3 (2025): Journal of Economics Research and Policy Studies

How the stock market reacts on presidential inauguration and cabinet announcement? A case study of Indonesian mining and energy industries

Rizal, Achmad (Unknown)
Hasanah, Imas (Unknown)
Munawaroh, U'um (Unknown)
Martutiningrum, Dwi (Unknown)



Article Info

Publish Date
30 Dec 2025

Abstract

This study investigates the stock market reaction of Indonesia’s mining and energy sectors, represented by LQ45 index constituents, toward the 2024 presidential inauguration and cabinet announcement. Using an event study methodology with an event window of t-7 to t+7, the research measures market responses through abnormal returns based on the market-adjusted model. Results show that the pre-inauguration period is characterized by predominantly negative Average Abnormal Returns (AAR) and Cumulative Abnormal Returns (CAR), indicating heightened uncertainty surrounding the incoming administration. On the inauguration day, both indicators turn positive, reflecting temporary optimism regarding political stability and policy continuity. However, the post-event window displays volatility, with sharp positive abnormal returns on certain days (e.g., t+3) but declines on others (e.g., t+2). Most t-statistics are statistically insignificant, suggesting that the inauguration did not generate strong or persistent market reactions.

Copyrights © 2025






Journal Info

Abbrev

jerps

Publisher

Subject

Economics, Econometrics & Finance

Description

Journal of Economics Research and Policy Studies [2797-8141] is a scientific journal that contains the results of theoretical research and studies on economics issues. The focus of this journal article is Economics, Economic Entrepreneurship, and start-up, development economics, monetary and fiscal ...