On July 16, 2026, the 3-2-1 crack spread closed at $69.66 per barrel, up over 2% to a record high, per Reuters. The spread, which Reuters describes as "the most widely used benchmark for U.S. refiner profitability," tracks how much money refiners make turning crude oil into finished products like gasoline and diesel. The move comes amid a broader rally in gasoline prices. CME Group's "Fresh from the Trading Room" newsletter on July 14 reported the gasoline crack spread at $43 per barrel, with RBOB gasoline up 73% year-to-date. RBOB (Reformulated Gasoline Blendstock for Oxygenate Blending) is the benchmark U.S. gasoline futures contract. The RBOB continuous contract (RB00) stood at $3.3910 per gallon as of July 17, per MarketWatch.

The 3-2-1 crack spread models a simple idea: three barrels of crude oil go in, and two barrels of gasoline plus one barrel of distillate (primarily diesel) come out. Per CME Group, the blend combines ULSD (Ultra-Low Sulfur Diesel) and RBOB crack spreads in a ratio that approximates actual refiner output. The EIA defines the gasoline crack spread specifically as the difference between the RBOB New York Harbor spot price and the Dated Brent Spot crude price. Think of it as the refiner's gross profit per barrel before operating costs.

What is pushing these margins higher? According to EIA data published July 15, petroleum markets responded to supply disruptions in the Middle East during the second quarter of 2026. The quarterly average gasoline crack spread was up 60% year-over-year in Q2. That disruption-driven repricing — where refined products rose faster than the crude they are made from — carried into Q3.

The EIA's July 2026 Short-Term Energy Outlook, published July 7, estimated the gasoline crack spread would increase about 10 cents per gallon on average in Q3 2026. That estimate came before the July 16 record close in the 3-2-1 spread, which Reuters attributed to fuel shortage concerns.

The gap between flat crude prices and product cracks has widened materially. The 3-2-1 spread at $69.66 per barrel means the gross processing margin for a generic barrel, assuming three crude inputs and two gasoline plus one distillate output, sits at a level not previously recorded in this benchmark. The $43 per barrel gasoline crack reported by CME on July 14 is a different but related metric: it isolates gasoline rather than blending gasoline and distillate together.

The broader context here is that the 73% year-to-date move in RBOB gasoline, as reported by CME Group, runs well ahead of the Q2 60% year-over-year crack spread increase from the EIA. That divergence is consistent with product prices leading crude higher in a supply-shortage repricing. The EIA's Q3 estimate of a 10-cent per gallon crack spread increase, issued July 7, is lower than the magnitude of the July 16 move in the 3-2-1 benchmark, which rose over 2% in a single session to close at a record.

For market participants, the record 3-2-1 close confirms what the EIA's Q2 data and CME's YTD figures indicated: the refining margin complex has repriced sharply higher on Middle East supply disruption risk. What is known is the data as of July 16. What is priced in is further tightness. What remains uncertain is whether Q3 crack spreads settle at the EIA's July 7 estimate or continue tracking the upward trajectory the July 16 record close implies.

CME Group published RBOB Gasoline Futures settlement data for the trade date of July 15, 2026, consistent with the pricing and margin data cited above. The EIA's October 2025 definitional note on the gasoline crack spread remains the authoritative source for how the agency constructs the metric.