War-Driven Oil Shock Set to Boost U.S. Refiners’ Q1 Profits

U.S. oil refiners are expected to post significantly higher profits for the first quarter of 2026, as global conflict in the Middle East drives fuel prices and refining margins to multi-year highs.

Industry analysts say the ongoing war involving the United States, Israel, and Iran has disrupted global oil supply chains particularly following the closure of the Strait of Hormuz, a critical route for about 20% of the world’s oil shipments. This has sharply tightened fuel availability and pushed up prices for refined products such as diesel and jet fuel.

As a result, refining margins; commonly known as “crack spreads” have surged, with diesel margins reportedly more than doubling during the quarter. Higher margins allow refiners to earn more from converting crude oil into usable fuels, boosting their earnings outlook.

Major U.S. refiners including Valero Energy, Marathon Petroleum, and Phillips 66 are projected to benefit the most from the favorable market conditions. Analysts expect some firms to report strong profit growth, while others may narrow previous losses despite operational challenges such as hedging setbacks.

The surge in profitability comes amid a broader spike in global energy prices. Crude oil prices climbed dramatically during the quarter, with Brent crude rising from about $61 per barrel at the start of the year to well above $100 following the escalation of hostilities.

Experts note that U.S. refiners are particularly well-positioned to capitalize on the crisis due to their relatively stable crude supply and strong export capacity, especially from Gulf Coast facilities. Increased global demand for U.S. fuel exports has further strengthened margins.

However, analysts warn that while refiners benefit from high margins, prolonged high fuel prices could reduce consumer demand and strain the broader economy, potentially limiting long-term gains.

Looking ahead, the sector is expected to maintain strong earnings momentum in the coming quarters, provided supply disruptions persist and global fuel demand remains robust.