S-Oil operating profit climbs 91 percent as global supply disruptions double refining margins
South Korean refiner S-Oil reported a 91 percent jump in quarterly profit as refining margins doubled. Global supply disruptions supported the record growth.
Insights:
S-Oil Corporation reported on Monday that its operating profit for the fourth quarter of 2025 reached 424 billion won, marking a 91 percent increase compared to the same period the previous year. This significant growth was primarily supported by a sharp rise in refining margins, which doubled to 13.4 dollars per barrel for gasoline from Dubai crude, up from 6.5 dollars per barrel in the fourth quarter of 2024. The company's refining division specifically saw its operating profit climb 55 percent to 225.3 billion won during the final three months of the year.
The surge in profitability comes as geopolitical tensions and capacity reductions create tight supply conditions in the global energy market. The European Union 
EUcontinues to enforce sanctions on Russia 
RU, while Ukraine 
UAhas conducted several drone attacks on Russian petroleum processing facilities. Furthermore, the planned closure of the Benicia refinery in the United States 
US, operated by Valero Energy Corporation , by the end of April 2026 has added to the structural support for refining margins. Market dynamics are also being influenced by ongoing crises in Venezuela 
VEand Iran 
IR, which have affected global supplies of crude oil, including benchmarks like Crude Oil WTI . While China 
CNhas imported low-priced crude oil from Venezuelaand Iran, this has impacted the competitiveness of Chinese processing facilities.
EUcontinues to enforce sanctions on Russia RU, while Ukraine UAhas conducted several drone attacks on Russian petroleum processing facilities. Furthermore, the planned closure of the Benicia refinery in the United States US, operated by Valero Energy Corporation , by the end of April 2026 has added to the structural support for refining margins. Market dynamics are also being influenced by ongoing crises in Venezuela VEand Iran IR, which have affected global supplies of crude oil, including benchmarks like Crude Oil WTI . While China CNhas imported low-priced crude oil from Venezuelaand Iran, this has impacted the competitiveness of Chinese processing facilities.
