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All Journal Syi'ar Iqtishadi
Nurlatifah Umi Oktafiani
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Economics, Econometrics & Finance Other

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Semi-Strong Form Market Efficiency and Resilience of Indonesian Sharia Stocks: An Event Study of the Hamas–Israel Conflict Ajeng Qurrota A’yun; Windiya Saputri; Anggita Nurcahyani; Nurlatifah Umi Oktafiani; Muhammad Faiz Andeaz Fawwaz
Syi`ar Iqtishadi : Journal of Islamic Economics, Finance and Banking Vol 10, No 1 (2026)
Publisher : FEB Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35448/jiec.v10i1.40847

Abstract

This study investigates the market reaction of Indonesian sharia-compliant stocks to the Hamas–Israel conflict announcement on October 7, 2023, through an event study methodology with an event window of [−5, +5] trading days. Using a sample of 35 Indonesia Sharia Stock Index (ISSI) stocks, abnormal returns were analysed via One-Sample t-Tests, Paired Sample t-Tests, and the Wilcoxon Signed Rank Test. Normality tests confirmed non-normal distributions across all event days. Results indicate no significant abnormal returns on ten of eleven event days, supporting semi-strong form market efficiency. However, a statistically significant decline in mean abnormal returns was observed from the pre-event period (mean AR = 0.0325) to the post-event period (mean AR = −0.0611), confirmed by both parametric (t = 2.226, p = 0.033) and non-parametric tests (Z = −2.178, p = 0.029). These findings suggest that Indonesian sharia stocks are relatively resilient to external geopolitical shocks.
Assessing The Role Of Islamic Financing And Regional Economic Growth In Reducing Income Inequality: Evidence From Indonesia Nani Suhartini; Tenny Badina; Nurul Fadhilah; Windiya Saputri; Nurlatifah Umi Oktafiani
Syi`ar Iqtishadi : Journal of Islamic Economics, Finance and Banking Vol 9, No 2 (2025)
Publisher : FEB Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35448/jiec.v9i2.36358

Abstract

This study aims to analyse the impact of Zakat, Infak, and Sadaqah (ZIS) distribution, Islamic financing, and Gross Regional Domestic Product (GRDP) on income inequality in Indonesia during the period 2019–2023. A quantitative approach was employed, utilising secondary data from the annual reports of BAZNAS, Islamic Banking Statistics published by the Financial Services Authority (OJK), as well as GRDP and Gini ratio data from The Global Economy. A panel data econometric model with the Fixed Effect Model (FEM) was applied to estimate the effects of the variables. The analysis included classical assumption tests to ensure model validity and coefficient estimation to capture the impact of each variable on the primary outcome. The distribution of ZIS funds had no significant effect on the Gini ratio (p-value: 0.8848), whereas Islamic financing (p-value: 0.0128) and GRDP (p-value: 0.0083) had a significant negative effect, indicating their contribution to reducing inequality. The model explained 96.01% of the variation in income inequality. Islamic financing and inclusive economic growth play a significant role in reducing income inequality, while optimisation of zakat management remains necessary. Strengthening access to Islamic financing, ensuring transparency in ZIS management, and fostering inclusive economic growth are essential to achieve sustainable social and economic justice.
Co-Authors Ajeng Qurrota A’yun Anggita Nurcahyani Muhammad Faiz Andeaz Fawwaz Nurul Fadhilah Tenny Badina Windiya Saputri Windiya Saputri