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Wall Street Shaken by US-Iran Conflict, Semiconductor Stocks Hit Hard

Published : Sep 2, 2026 7:42 AM

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The major three indices all closed lower in the wake of the military conflict between the U.S. and Iran.

The Nasdaq fell by over 1%, while the S&P 500 index finished trading in the 7,600 range for the second consecutive day.

By sector, materials, consumer discretionary, and industrials showed weakness in the 1% range.

Concerns over supply disruptions in the global oil transportation chokepoint intensified as the U.S. military launched airstrikes targeting Islamic Revolutionary Guard Corps targets near the Strait of Hormuz, and Iran responded with retaliation.

In the aftermath, West Texas Intermediate (WTI) crude surpassed 90 dollars per barrel, and Brent crude closely approached the 95 dollar mark.

Amid inflation fears, heavy selling was also concentrated in the bond market.

The yield on the U.S. 10-year Treasury note broke through 4.8%, recording its highest level since January 2025.

Economic indicators released on this day generally pointed to a moderate slowdown.

Job openings in July stood at 7.27 million, meeting expectations and rising slightly from the previous month, while the August ISM Manufacturing Purchasing Managers' Index (PMI) fell to 54.6 from the previous month, indicating that the pace of manufacturing expansion is slowing down.

By stock, semiconductor shares took a severe hit due to geopolitical risks and the fallout from high interest rates.

While the Philadelphia Semiconductor Index dropped by over 2%, Apple, where newly appointed CEO John Ternus took office, showed confidence in its product pipeline and recorded an increase in the 2% range.

Market attention is focusing on tomorrow (the 3rd), as the Federal Reserve is set to release its Beige Book alongside the earnings report of Broadcom, which will gauge the sustainability of AI chip demand.