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All Journal JMBI UNSRAT (Jurnal Ilmiah Manajemen Bisnis dan Inovasi Universitas Sam Ratulangi)
Sangkoy, Richard Imanuel
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Decision Sciences, Operations Research & Management

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REAKSI PASAR MODAL TERHADAP PENGUMUMAN TARIF TRUMP UNTUK INDONESIA PADA PERUSAHAAN MANUFAKTUR YANG TERDAFTAR DALAM INDEKS LQ45 Sangkoy, Richard Imanuel; Mangantar, Maryam; Tulung, Joy Elly
JMBI UNSRAT (Jurnal Ilmiah Manajemen Bisnis dan Inovasi Universitas Sam Ratulangi). Vol 13 No 1 (2026): JMBI UNSRAT Volume 12 Nomor 3
Publisher : Magister Manajemen Program Pasca Sarjana Universitas Sam Ratulangi Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35794/jmbi.v13i1.67048

Abstract

This study aims to analyze the capital market reaction to events before and after the announcement of the 32% US tariff on Indonesia on manufacturing companies listed on the LQ45 index. Market reaction is measured through Abnormal Return and Trading Volume Activity with a quantitative approach using the Event Study method. The sample was determined using purposive sampling, with a sample size of six manufacturing companies listed on the LQ45 index for the period May-July 2025. The testing was conducted using a paired sample t-test and Wilcoxon signed rank test with an observation period of 7 days before and 7 days after the announcement. The results showed that there was no significant difference in abnormal return or trading volume activity before and after the tariff announcement. Thus, the announcement of a 32% tariff by the United States on Indonesia did not cause a significant reaction in the Indonesian capital market
Co-Authors Joy Elly Tulung Maryam Mangantar