Delek US Holdings, Inc. (DK) Income Statement

The 47.8% revenue growth in 2026Q2 appears to be a rebound from a trough, not a sustained acceleration, given that 2024Q4 and 2025Q1 saw contractions of -41.4% and -15.5%, respectively. This volatility suggests that top-line performance is highly sensitive to crack spreads and regional crude differentials, which are inherently unpredictable. Investors should monitor whether this growth can persist or if it is a one-off spike driven by favorable market conditions.

The negative gross margins in 2024Q4 and 2025Q1 indicate that feedstock costs exceeded revenues, a common occurrence for inland refiners when crack spreads compress. The recovery to 17.1% in 2025Q3 suggests a temporary improvement in regional differentials, but the subsequent decline to 8.9% in 2026Q2 shows that this is not durable. This volatility implies that DK's gross margin is structurally constrained by its smaller scale and reliance on regional pricing, making it vulnerable to margin compression when industry conditions weaken.

SG&A expenses have stayed in the $44M-$77M range despite revenue swings, which means that when gross profit turns negative, operating losses are severe, as seen in 2024Q4 when operating margin hit -17.0%. Conversely, when gross profit recovers, operating income scales rapidly, as in 2026Q2. This suggests that DK's cost structure is highly fixed, and any sustained downturn in refining margins could lead to outsized losses, while recoveries may be equally dramatic.

The primary cost driver is crude oil feedstock, which is highly volatile and directly tied to regional differentials. The negative gross margins in several quarters indicate that DK has limited ability to pass through cost increases, especially when crack spreads are weak. Additionally, the potential expiration of small refinery exemptions could increase RINs compliance costs, which would further compress margins. This suggests that DK's cost structure is highly exposed to regulatory and commodity price risks, and management's expense discipline is secondary to external factors.

The 2024Q4 results appear to represent the bottom of the refining cycle, with gross margin at -5.9% and operating margin at -17.0%, likely due to weak crack spreads and inventory write-downs. The recovery in 2025Q3 and 2026Q2 suggests that market conditions have improved, but the persistence of negative net margins in other quarters indicates that the recovery is uneven. This inflection point may be driven by changes in regional crude differentials and product demand, but the sustainability of the improvement remains uncertain given the high leverage and regulatory risks.