Stock market today: Live updates
Traders work at the New York Stock Exchange on March 4, 2026.
NYSE
Stocks resumed their decline Thursday after a one-day respite as concerns over the Iran war flared up again with oil prices nearing $80 a barrel.
The Dow Jones Industrial Average declined 974 points, or 2%. The S&P 500 fell 1.2%, while the Nasdaq Composite dipped 1%. The stock sell-off was led by Boeing, Caterpillar and other names that stand to lose the most if the global economy slows.
U.S. crude oil prices jumped to their highest level since June 2025 after Iran said it hit an oil tanker with a missile. West Texas Intermediate crude futures popped 6% to trade above $79 per barrel. It at one point touched $79.97 a barrel. International benchmark Brent crude futures traded 3% higher at more than $84 per barrel.
The two had stabilized in the prior trading day, which boosted the 30-stock Dow more than 200 points on Wednesday.
Iranian Foreign Minister Abbas Araghchi said Thursday that Iran is “not asking for a cease fire” from the U.S. and Israel, adding that “we don’t see any reason why we should negotiate.”
With increasing uncertainty surrounding the conflict, Sam Stovall of CFRA Research said that investors are now wondering if the U.S. bit off more than it can chew.
“Can [President Donald] Trump really escort all of the vessels through the [Strait of Hormuz]?” the chief investment strategist remarked. “What kind of liability are we going to be putting on ourselves, and how would that affect our debt levels? Investors are basically saying that whatever is happening now is not good.”
Fears of disruption to regional oil and gas supplies had subsided after Trump said on Tuesday that the U.S. is preparing to provide risk insurance and escorts to ships in the Persian Gulf in an effort to ensure traffic can move through the Strait of Hormuz.
To be sure, the White House would not provide a timeline for when the strait, which is responsible for roughly 20% of the world’s oil supply, will be safe for oil tankers.
Defense Secretary Pete Hegseth said in a briefing with reporters that the U.S. is “winning decisively” in its conflict with Iran and that more forces are arriving to the region. Separately, Treasury Secretary Scott Bessent said on that Trump’s recently announced 15% global tariff will likely go into effect this week.
Berkshire Hathaway was a bright spot in the trading day. Gaining more than 1% after the conglomerate disclosed that it started repurchasing its own shares again for the first time since 2024. CEO Greg Abel also bought $15 million worth of stock himself.
