Dow plunges 1,200 points as investors fret over Iran war

March 3, 2026

TL;DR

U.S. stocks plummeted following the market open due to concerns over the Iran war's impact on global oil supplies.
The Dow Jones Industrial Average fell 1,235 points, the S&P 500 dropped 2.2%, and the Nasdaq Composite decreased by 2.4%.
Economists highlighted fears of significant interruptions to crude oil and natural gas supplies, leading to market disarray.
Investor sentiment was negatively affected by uncertainty about energy markets and the conflict's duration.
The Strait of Hormuz, through which 20% of the world's oil supply flows, is experiencing bogged-down tanker traffic.
Oil prices, including Brent crude and benchmark U.S. crude, saw significant increases.
The 10-year Treasury yield climbed, indicating investor anticipation of inflation amid potential oil supply constraints.
Eight OPEC+ countries announced they would boost crude production to offset reduced Iranian oil exports, but this increase is considered modest.

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