TY - JOUR T1 - Heterogeneous Market Reactions of the G20 Stock Markets to the Hamas-Israel War TT - Hamas-İsrail Savaşına Karşı G20 Borsalarının Heterojen Piyasa Tepkileri AU - Aksoy, Mine AU - Yılmaz, Mustafa Kemal AU - Kalkan Küçüksolak, Övgü PY - 2025 DA - October Y2 - 2025 DO - 10.33203/mfy.1670587 JF - Maliye ve Finans Yazıları PB - Maliye ve Finans Yazıları Yayıncılık Ltd. Şti. WT - DergiPark SN - 1308-6014 SP - 21 EP - 35 IS - 124 LA - en AB - This study aims to examine the impact of the Hamas-Israel conflict on G20 stock markets and gold prices by employing an event study approach. The results show a continuous decline of the stock markets in the following 10 working days in the aftermath of the attack. The country-wise findings indicate that there are no significant abnormal returns in any stock market on the first day following the conflict. For longer event windows (+3, +5, +10), China, France, Germany, India, Italy, Mexico, South Africa, Türkiye, and the US exhibited negative and significant cumulative abnormal returns (CARs), while Argentina and Russia had positive and significant CARs. The findings also reveal that gold preserves its role as a safe-heaven asset during high tension periods. KW - Geopolitical conflicts KW - Gold KW - Hamas-Israel war KW - Stock market returns N2 - Bu çalışma, Ekim 2023 tarihinde gerçekleşen Hamas-İsrail çatışmasının G20 ülkelerinin borsa endeksleri ve altın fiyatları üzerindeki etkisini incelemeyi amaçlamaktadır. Çalışmada olay etüdü yöntemi kullanılmıştır. Sonuçlar Hamas saldırıları ardından gelen 10 iş günü boyunca G20 borsalarında sürekli bir düşüş yaşandığını ortaya koymaktadır. Ülke bazında sonuçlar, çatışmayı takip eden ilk gün herhangi bir borsa endeksinde anlamlı anormal getiri bulunmadığını göstermektedir. Daha uzun olay pencerelerinde (+3, +5, +10) Çin, Fransa, Almanya, Hindistan, İtalya, Meksika, Güney Afrika, Türkiye ve ABD borsalarında negatif ve anlamlı kümülatif anormal getiriler, Arjantin ve Rusya’da ise pozitif ve anlamlı kümülatif anormal getiriler tespit edilmiştir. Ayrıca bulgular, altının çatışma döneminde geleneksel güvenli liman rolünü koruduğunu göstermektedir. CR - Aksoy, M., & Yilmaz, M. K. (2024). Stock market response to natural disasters: Does corporate sustainability performance make difference? Journal of Cleaner Production, 454, 142294. https://doi.org/10.1016/j.jclepro.2024.142294 CR - Bhattacharjee, A., Sidana, N., Goel, R., Shukre, A., & Singh, T. (2025). Cross-border ripples: investigating stock market responses to Israel-Hamas conflict in trading partner nations using event study method. Journal of Economic Studies, 52(4), 803-823. https://doi.org/10.1108/JES-05-2024-0291 CR - Boubaker, S., Farag, H., & Nguyen, D.K. (2015). Short-term overreaction to specific events: Evidence from an emerging market. Research in International Business and Finance, 35, 153-165. https://doi.org/10.1016/j.ribaf.2014.10.002 CR - Boubaker, S., Goodell, J.W., Pandey, D.K. & Kumari, V. (2022). Heterogeneous impacts of wars on global equity markets: Evidence from the invasion of Ukraine. Finance Research Letters, 48, 102934. https://doi.org/10.1016/j.frl.2022.102934 CR - Berkman, H., Jacobsen, B., & Lee, J.B. (2011). Time-varying rare disaster risk and stock returns. Journal of Financial Economics, 101(2), 313-332. https://doi.org/10.1016/j.jfineco.2011.02.019 CR - Bona, L., & Páez, S. M. (2022). China in South America. Development consequences for Argentina and Brazil. Political Economy Working Papers, (4). https://www.memoria.fahce.unlp.edu.ar/art_revistas/pr.16581/pr.16581.pdf. Accessed on January 30, 2024. CR - Boungou, W., & Yatié, A. (2022). The impact of the Ukraine–Russia war on world stock market returns. Economics Letters, 215, 110516. https://doi.org/10.1016/j.econlet.2022.110516 CR - Brown, S.J., & Warner, J.B. (1980). Measuring security price performance. Journal of Financial Economics, 8(3), 205-258. https://doi.org/10.1016/0304-405X(80)90002-1 CR - Brown, S.J., & Warner, J.B. (1985). Using daily stock returns: The case of event studies. Journal of Financial Economics, 14, 3-31. https://doi.org/10.1016/0304-405X(85)90042-X CR - Brune, A., Hens, T., Rieger, M.O., & Wang, M. (2015). The war puzzle: Contradictory effects of international conflicts on stock markets. International Review of Economics, 62(1), 1-21. https://doi.org/10.1007/s12232-014-0215-7 CR - Chang, C.L., Hsu, S.H., & McAleer, M. (2018). An event study analysis of political events, disasters, and accidents for Chinese tourists to Taiwan. Sustainability, 10(11), 4307. https://doi.org/10.3390/su10114307 CR - Chkili, W. (2022). The risk transmission from the COVID-19 to MENA stock markets: what is the best safe haven asset during the pandemic? ERF 28th Annual Conference, March 2022. CR - Das, B.C., Hasan, F., Sutradhar, S.R., & Shafique, S. (2023). Ukraine–Russia conflict and stock markets reactions in Europe. Global Journal of Flexible Systems Management, 24(3), 395-407. https://doi.org/10.1007/s40171-023-00345-0 CR - Federle, J., Meier, A., Müller, G. J., & Sehn, V. (2022). Proximity to war: The stock market response to the Russian invasion of Ukraine. Journal of Money, Credit and Banking, 89, 102744. https://doi.org/10.1111/jmcb.13226 CR - Goyal, P., & Soni, P. (2024). Beyond borders: investigating the impact of the 2023 Israeli–Palestinian conflict on global equity markets. Journal of Economic Studies, 51(8), 1714-1731. https://doi.org/10.1108/JES-12-2023-0729 CR - Harjoto, M.A., & Rossi, F. (2023). Market reaction to the COVID-19 pandemic: Evidence from emerging markets. International Journal of Emerging Markets, 18(1), 173-199. https://doi.org/10.1108/IJOEM-05-2020-0545 CR - Hassan, M.K., Boubaker, S., Kumari, V., & Pandey, D.K. (2022). Border disputes and heterogeneous sectoral returns: an event study approach. Financial Research Letters, 50, 103277. https://doi.org/10.1016/j.frl.2022.103277 CR - Ijaz, M.S., Ali, S., Du, A.M., & Khurram, M. (2025). Analyzing financial market reactions to the Palestine-Israel conflict: An event study perspective. International Review of Economics and Finance, 98, 103864. https://doi.org/10.1016/j.iref.2025.103864 CR - Klement, J. (2021). Geo-economics: The interplay between geopolitics, economics, and investments. CFA Institute Research Foundation. CR - Liu, Z., Dai, P.F., Huynh, T.L., Zhang, T., & Zhang, G. (2023). Industries’ heterogeneous reactions during the COVID-19 outbreak: Evidence from Chinese stock markets. Journal of International Financial Management and Accounting, 34(2), 243‒278. https://doi.org/10.1111/jifm.12166 CR - Martins, A.M. (2024). Global equity, commodities and bond market response to Israel-Hamas war. Finance Research Letters, 67, 105900. https://doi.org/10.1016/j.frl.2024.105900 CR - Mo, B., Nie, H., & Zhao, R. (2024). Dynamic nonlinear effects of geopolitical risks on commodities: Fresh evidence from quantile methods. Energy, 288, 129759. https://doi.org/10.1016/j.energy.2023.129759 CR - OECD (2024). Organisation for Economic Co-operation and Development, https://www.oecd.org/g20/about/. Accessed on January 30, 2024. CR - Pandey, D.K., & Kumari, V. (2021). Event study on the reaction of the developed and emerging stock markets to the 2019–nCoV outbreak. International Review of Economics & Finance, 71. https://doi.org/10.1016/j.iref.2020.09.014 CR - Pandey, D.K., Lucey, B.M., & Kumar, S. (2023). Border disputes, conflicts, war, and financial markets research: a systematic review. Research in International Business and Finance, 65, 101972. https://doi.org/10.1016/j.ribaf.2023.101972 CR - Pandey, D.K., Kumari, V., Palma, A., & Goodell, J.W. (2024). Are markets in happier countries less affected by tragic events? Evidence from market reaction to the Israel–Hamas conflict. Finance Research Letters, 60, 104893. https://doi.org/10.1016/j.frl.2023.104893 CR - Schneider, G., & Troeger, V.E. (2006). War and the world economy: Stock market reactions to international conflicts. Journal of Conflict Resolution, 50(5), 623-645. https://doi.org/10.1177/0022002706290430 CR - Shroff, S., Agrawal, N., Pliwal, U.L., Yadav, M.P. (2025). How do selected asset classes react to sudden shocks? Evidence from Israel-Hamas conflict using event study approach. Research in International Business and Finance, 75, 102712. https://doi.org/10.1016/j.ribaf.2024.102712 CR - Patrick, S. (2023). Israel-Hamas war stroke tensions in Europe. NBC News, https://www.nbcnews.com/news/world/israel-hamas-war-stokes-tensions-europe-rcna124860. Accessed on January 30, 2024. CR - Sun, M., Song, H., & Zhang, C. (2022). The effects of 2022 Russian invasion of Ukraine on global stock markets: An event study approach. Available at SSRN: https://ssrn.com/abstract=4051987 or http://dx.doi.org/10.2139/ssrn.4051987. Accessed on January 30, 2024. CR - The Jewish Virtual Library. (2024). Vital statistics: Jewish population of the world, https://www.jewishvirtuallibrary.org/jewish-population-of-the-world. Accessed on January 30, 2024. CR - Tosun, O., & Eshraghi, A. (2022). Corporate decisions in times of war: Evidence from the Russia-Ukraine conflict. Finance Research Letters, 48, 102920. https://doi.org/10.1016/j.frl.2022.102920 CR - Triki, M.B., & Maatoug, A.B. (2021). The gold market as a safe haven against the stock market uncertainty: Evidence from geopolitical risk. Resources Policy, 70, 101872. https://doi.org/10.1016/j.resourpol.2020.101872 CR - Wu, F.L., Zhan, X.D., Zhou, J.Q., & Wang, M.H. (2023). Stock market volatility and Russia–Ukraine conflict. Finance Research Letters, 55, 103919. https://doi.org/10.1016/j.frl.2023.103919 CR - Yousaf, I., Patel, R., & Yarovaya, L. (2022). The reaction of G20 stock markets to the Russia– Ukraine conflict ‘black-swan’ event: evidence from event study approach. Journal of Behavioral and Experimental Finance, 35, 100723. https://doi.org/10.1016/j.jbef.2022.100723 UR - https://doi.org/10.33203/mfy.1670587 L1 - https://dergipark.org.tr/en/download/article-file/4747935 ER -