Oil prices extended their gains Monday as escalating U.S.-Iran tensions over the Strait of Hormuz fueled concerns about global energy supplies and shipping disruptions.
Brent crude futures for October delivery rose 2.5% to $90.68 per barrel, while U.S. West Texas Intermediate (WTI) crude gained 2.7% to $83.64. Brent had climbed nearly 6% the previous week, with WTI advancing more than 5.5%.
President Donald Trump again claimed the United States has “total control” of the Strait of Hormuz, pointing to Washington’s naval blockade of Iranian ports. Iran has separately asserted control over the strategic waterway and demanded conditions including an end to hostilities and the unfreezing of Iranian assets before fully reopening the route.
Monday also marked the expiration of a U.S.-Iran memorandum of understanding signed in June. Trump indicated he was not seeking an extension.
Shipping activity through the Strait of Hormuz remains sharply constrained. Kpler data showed only three confirmed vessel crossings on Sunday, while total crossings fell 19.5% to 95 last week. Before the conflict, more than 130 ships reportedly passed through the strait each day.
Meanwhile, Iran has been working with Oman on a potential framework for managing the waterway. Trump threatened military action against Oman if it interfered with U.S. objectives, adding further uncertainty to negotiations.
ANZ analysts said refined petroleum products, particularly diesel, face even greater pressure than crude oil. Gulf refinery disruptions, shipping constraints and strong global demand have tightened diesel supplies. Ukrainian attacks on Russian oil infrastructure are adding to concerns that petroleum markets could become tighter in the coming months.
Supply risks have overshadowed weaker oil demand projections after both OPEC and the International Energy Agency lowered their 2026 forecasts.
U.S. energy security is also drawing attention. Department of Energy data showed the Strategic Petroleum Reserve fell by 5.3 million barrels in the week ending August 14 to 293.4 million barrels, its lowest level since 1982. The decline comes amid coordinated emergency oil releases aimed at limiting energy price increases.


US Stock Futures Mixed as Fed Rate Hike Bets Fade, AI Deals in Focus
Japan Economy Grows 1.1% in Q2 as Consumer Spending Stalls
US Stock Futures Steady as Cooling Inflation and Strong Earnings Support Markets
US Dollar Slips as Weak Retail Sales Reduce Fed Rate Hike Bets
Strait of Hormuz Shipping Near Standstill After New Vessel Attacks
Gold Prices Rise as Weak US Data and Hormuz Risks Boost Safe-Haven Demand
BSP Sees Philippine Inflation Easing, Keeps Policy Options Open
Morgan Stanley Sees Fed Holding Rates as U.S. Inflation Cools
S&P 500 Retreats From Record High as AI Stocks Slide, Retail Sales Disappoint
European Stocks Steady as U.S.-Iran War, Euro Zone Data Keep Investors Cautious
Oil Prices Steady as Strait of Hormuz Traffic Slows Amid US-Iran Conflict
Foreign U.S. Treasury Holdings Fall as Japan, UK and China Cut Positions
Yen Edges Higher as Weak US Data Dampens Fed Rate Hike Expectations
Asian Stocks Steady as Iran War Keeps Oil Prices and Inflation Risks Elevated
Trump Imposes New Tariffs on Drone Imports Over US Security Concerns 



