U.S. equity futures retreated sharply on Monday as geopolitical tensions heightened following an incident involving an Iranian vessel. As of 4:46 PM (Bangkok time), Dow Jones Industrial Average futures dropped by 0.58% to 49,353.00, while futures tied to the S&P 500 fell 0.48% to 7,127.25. Nasdaq-100 futures were down 0.49% to 26,695.25.
The pullback follows weekend developments in the Gulf of Oman, where President Donald Trump stated that the U.S. had fired upon and captured an Iranian-flagged cargo ship now subject to U.S. sanctions.
Trump’s remarks also included a warning that the U.S. could target Iran’s infrastructure if a new agreement is not reached. Tensions escalated further after Iran opted out of additional peace discussions organized by the U.S. in Pakistan, and as the current ceasefire window was set to expire within the week.
Energy prices surged in early trading amid renewed supply concerns. West Texas Intermediate crude futures jumped 8% to $90.54 per barrel, while Brent crude increased 6% to $96.50 a barrel. The instability in the Strait of Hormuz, a major conduit for global oil shipments, contributed to the sharp move in crude prices.
Last week, the S&P 500 and Nasdaq Composite both reached record highs following a short-lived ceasefire that briefly reopened the Strait of Hormuz. However, vessel traffic faced new restrictions by Saturday, with Iranian state sources attributing this to unmet commitments by the U.S. Trump has maintained that American restrictions on the strait will remain until Iran meets the administration’s demands.
The S&P 500 gained 4.5% over the previous week, while the Nasdaq Composite advanced 7.2%. The intensified uncertainty over U.S.-Iran relations tempered this momentum, with some investors now viewing markets as having entered overbought territory in hopes for a near-term resolution.
Investors are also monitoring a busy earnings calendar this week, with reports due from prominent companies including Tesla, Intel, and United Airlines. These results will be watched for additional direction as markets contend with equity values and mounting geopolitical risks.


