Stock market update: Dow, Nasdaq, and S&P fall as Iran uncertainty abounds |
Stock market update: Dow, Nasdaq, and S&P fall as Iran uncertainty abounds
Roughly 20% of the world’s oil flows through the Strait of Hormuz. Its sudden closure is forcing investors to reassess energy prices, corporate costs, and how fragile global trade remains in 2026.
[Photo: Michael Nagle/Bloomberg via Getty Images]
America’s three major stock markets, the Dow, Nasdaq, and S&P, are all down sharply in morning trading as of this writing. The wave of red across investors’ monitors is primarily due to one major factor: uncertainty around how far the Iran conflict will travel and how long it will last. Here’s what you need to know about how markets are reacting.
Over the weekend, President Donald Trump ordered strikes on Iran, during which the country’s supreme leader, Ayatollah Ali Khamenei, was killed. The death of Iran’s leader and the ongoing conflict in Iran will have significant consequences for the region as a whole for years to come.
Yet what those consequences will be is so far unknown. And it’s that uncertainty that is causing stock markets in the United States to fall significantly today, especially after Iran’s Revolutionary Guard Corps announced that the Strait of Hormuz is closed.
The Strait of Hormuz is one of the most critical supply routes in the world, with around a fifth of all oil passing through it. Any blockage of the strait could have severe consequences for the global energy trade, and thus the global economy.
On top of this, it is looking increasingly likely that the conflict against Iran could go on for some time, with Trump not ruling out that U.S. soldiers may need to be put on the ground in Iran.
Stock markets sink as Iran uncertainty rises
Given all the uncertainty surrounding Iran and oil trade routes, it’s little surprise the markets are reacting negatively at this time. Currently, the Dow, Nasdaq, and S&P are all down significantly:
Dow: down 2.5% to $47,669
Nasdaq: down 2.5% to $22,179
S&P 500: down 2.4% to $6,715
Given that stocks and the markets they trade on are historically volatile in the wake of significant geopolitical events, it’s no shock that all three major markets are down.
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