In the commodities asset class in May 2026, ICE cocoa futures were the only commodity to post just below a double-digit percentage gain. Palladium, WTI, Brent crude oil, gasoline, heating oil, gasoline crack spreads, frozen concentrated orange juice, and Ethereum declined by over 10%. The leading stock market indices moved higher, while the long bond futures were steady. The dollar index rose by 0.95%. The long bond futures fell by 0.47%. A higher dollar and elevated interest rates weighed on many commodity prices.
Oil remains in focus
A continued ceasefire and hopes of a settlement between Iran and the United States that opens the Strait of Hormuz, a critical logistical chokepoint for crude oil, sent crude oil, oil products, crack spreads, and fertilizer prices lower in May.
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The monthly July NYMEX WTI crude oil futures chart shows that the price fell 11.88% in May. Brent crude oil, the benchmark for Middle Eastern petroleum, kept pace with the WTI, posting an 11.84% monthly decline on the ICE August contract.
Gasoline futures moved 11.98% lower, while heating oil futures, which are a proxy for other distillate fuels, fell 10.28%. The heating oil futures slightly outperformed the gasoline futures, even though the energy market moved into the 2026 driving season, the peak season for gasoline demand.
Crack spreads reflect the refining margins for processing crude oil into gasoline and distillate products. The gasoline crack spread moved 12.81% lower in May, while the distillate crack spread posted an 8.10% decline.
July Chicago ethanol swaps, the biofuel additive to U.S. gasoline, rose 0.61% for the month, while coal for delivery in Rotterdam, the Netherlands, rose 8.30% in May, even though heating demand declines during spring. Meanwhile, July U.S. natural gas futures prices rose 8.08% as natural gas is entering the cooling season. European natural gas prices were steady due to the upcoming cooling season and Middle Eastern supply concerns. U.K. natural gas futures prices for July delivery edged 0.15% higher in May, while natural gas futures prices in the Netherlands for July delivery increased by 0.40% for the month ending on May 29. The Middle East continued to cause supply concerns.
