U.S.-Iran Military Conflict Resumes, New York Stock Market Declines

by Younsun Choi Posted : September 1, 2026, 08:16Updated : September 1, 2026, 08:16

The domestic stock market is expected to open lower as it monitors geopolitical uncertainties stemming from the resumption of military conflict between the U.S. and Iran. Following a decline in the New York stock market, where international oil prices and U.S. Treasury yields rose, Samsung Electronics and SK Hynix are also showing weakness in pre-market trading.


As of 8:06 a.m. on September 1, Samsung Electronics was trading at 259,000 won, down 0.38% (1,000 won) from the previous trading day, while SK Hynix fell 0.18% (3,000 won) to 1,671,000 won.


On August 31, the Dow Jones Industrial Average closed at 53,186.32, down 0.70%. The S&P 500 index fell 0.33% to 7,686.35, and the Nasdaq Composite Index decreased by 0.12% to 26,370.889.


The resumption of military clashes between the U.S. and Iran has pressured investor sentiment. The U.S. military struck missile launch sites belonging to the Iranian Revolutionary Guard Corps (IRGC) on Larak Island in the Strait of Hormuz. In retaliation, the IRGC announced it attacked two U.S. military bases in Jordan.


Tensions escalated further after President Donald Trump warned of a strong response to Iran's attacks on U.S. bases, leading to a rise of over 2% in international oil prices and an increase in U.S. Treasury yields amid inflation concerns.


Major tech stocks struggled, with Alphabet and Amazon falling 2.09% and 2.50%, respectively. In contrast, Nvidia rose 1.48% due to expectations surrounding its investment in MediaTek and the expansion of data center construction. The Philadelphia Semiconductor Index also increased by 0.57%, helping to limit the overall decline in the market.


Seo Sang-young, a researcher at Mirae Asset Securities, stated, "The U.S. stock market declined due to rising international oil prices and Treasury yields amid military conflict between the U.S. and Iran. However, Nvidia's investment in MediaTek and easing concerns related to data centers, along with a rebound from last Friday's sharp drop, helped semiconductor stocks show strength, limiting the overall market decline."





* This article has been translated by AI.