• Diesel futures dropped 3.8% and gasoline futures fell 3.5% on Wednesday after the Energy Information Administration reported larger-than-expected builds in refined product inventories, surprising traders.
  • The bearish storage data signals weakening demand or stronger supply, reversing recent gains and putting pressure on the rest of the complex.

Market Reaction

NYMEX diesel futures extended losses to settle down 3.8%, while RBOB gasoline futures slid 3.5% after the EIA's weekly storage report showed gasoline inventories rose by 2.3 million barrels and distillate stockpiles increased by 1.8 million barrels, both exceeding analyst expectations. The moves reversed gains from earlier in the week as traders quickly priced in the surplus.

"The builds were definitely a surprise given this time of year typically sees draws as refineries ramp down," said a broker at a U.S. trading desk. "We've had a few weeks of strong demand, but this report suggests either demand is softening or supply is catching up."

The EIA data, released at 10:30 a.m. EST, showed refinery utilization slipped to 90.5% from 91.2% a week earlier, contributing to higher product stocks. Crude inventories also rose by 2.1 million barrels, adding to the bearish tone.

Diesel Demand Concerns

Diesel, used heavily in trucking and heating, has faced pressure from slowing industrial activity. Analysts noted that a mild start to winter in key heating zones has crimped demand for heating oil, which is chemically similar. The larger distillate build suggests that the market is adequately supplied even as global refining margins remain elevated.

Gasoline demand, meanwhile, has been resilient but faces headwinds from the post-summer driving lull. The inventory build, though moderate, was enough to push prices lower, with the crack spread narrowing sharply.

Broader Impact

The declines in refined products weighed on crude oil futures, which fell 2% as the complex took a bearish cue. Traders noted that the next few weekly reports will be key to assess whether the trend continues or reverses. Without a shift in demand or a production cut, futures could test recent lows.

Attempts to reach EIA officials for comment were not successful. The agency reports are mandatory but do not offer forward guidance.

Correction: An earlier version of this article misstated the diesel futures decline as 3.8% in the headline; it has been corrected to reflect the accurate move.