Oil prices surge and U.S. stocks fell on Tuesday, March 3, 2026, as traders priced in the risk that a wider Iran war could keep disrupting energy flows and shipping lanes in the Persian Gulf.
By the close, Brent and U.S. crude finished sharply higher, while the major U.S. stock indexes ended down about 1%, after steeper losses earlier in the day.
The market moves followed fresh signals from the White House that the U.S.-Israeli campaign could last weeks, along with reports of Iranian retaliation affecting energy facilities and tanker traffic around the Gulf. The Strait of Hormuz, a key corridor for global oil and LNG, remained the focus for energy traders and shipping insurers.
Oil prices surge on shipping risk and supply disruptions
Oil prices surged to their highest settlements in more than a year as supply fears spread beyond headlines into logistics.
In a Reuters report on March 3, 2026, Brent settled up 4.7% at $81.40 a barrel, and U.S. West Texas Intermediate settled up 4.7% at $74.56, both described as the highest settlements since early 2025 and mid-2025, respectively.
Reuters also reported Brent traded as high as $85.12 during the session, before paring gains, as traders reacted to shifting statements and battlefield updates. The same report said Iraq cut production by nearly 1.5 million barrels per day, with the potential for deeper cuts if export constraints persist.
The key pressure point remained the Strait of Hormuz, where insurers and shippers have been reassessing exposure. Reuters reported that tankers and container ships have been avoiding the strait after some insurers canceled coverage, contributing to higher shipping rates and delays. For oil traders, the operational question was less about a formal closure and more about whether enough vessels will risk the route at all.
Stocks tumble, then recover from deeper losses
U.S. stocks sold off early and then trimmed losses into the close, but the day still ended lower across major benchmarks.
The Associated Press reported that the S&P 500 closed down 0.9% at 6,816.63, the Dow Jones Industrial Average fell 403.51 points to 48,501.27, and the Nasdaq composite dropped 1.0% to 22,516.69.
The same AP report said the intraday swings were larger than the closing numbers suggest. At the lows earlier in the session, the S&P 500 was down as much as 2.5% and the Dow was down more than 1,200 points, before buyers stepped in and the indexes stabilized.
Market sensitivity was tied to a familiar chain reaction: higher energy prices can lift near-term inflation expectations, squeeze household budgets, and raise costs for airlines, shippers, manufacturers, and other fuel-heavy industries.
Even companies not directly tied to oil can take a hit if markets start pricing in slower growth or delayed rate relief.
