European diesel margins remained broadly steady on Wednesday after U.S. data showed an unexpected build in distillate inventories, a development that did not materially shift spreads that are trading not far from their record peaks.
At 1615 GMT, low-sulphur gasoil futures were quoted at $76.39 a barrel over Brent crude futures, a modest uptick of $0.22 from the prior session's close.
U.S. Energy Information Administration figures showed total U.S. distillate stocks - which encompass diesel and heating oil - increased by 0.8 million barrels in the latest week, taking inventories to 104.2 million barrels. This was contrary to market expectations: analysts surveyed ahead of the release had been forecasting a draw of 1.3 million barrels.
Despite the national increase, the EIA reported that distillate inventories on the U.S. East Coast fell to a record low. That regional tightness contrasts with the overall U.S. build and reflects uneven distribution of product across the country.
Separately, operations at one of Russia's major refineries were disrupted following an attack. Two industry sources said Surgutneftegaz's Kirishinefteorgsintez (KINEF) halted crude processing after a drone strike on August 30 damaged processing units. The stoppage at KINEF was cited by the sources as a direct consequence of the damage sustained.
The data release and the refinery outage together present a mixed picture: an unexpected rise in U.S. distillate inventories at the national level, offset by record low stocks in a key U.S. region, alongside a supply disruption from a major Russian refinery. Market participants continued to price low-sulphur gasoil with margins close to historic highs.
Given the information available, European diesel margins showed resilience in the face of the U.S. inventory surprise and the reported refinery shutdown. Market participants will likely watch subsequent weekly inventory updates and any confirmation of the KINEF outage duration for further signals on regional supply balances and margin direction.