Four major US refiners (Marathon Petroleum, HF Sinclair, Valero Energy, Phillips 66) have seen significant stock gains over the past six weeks, driven by record-high diesel crack spreads. This surge in profitability is due to a tight global distillate inventory and a widening margin between crude oil and diesel prices, allowing refiners to 'pocket the difference' despite lower crude prices.
The filing highlights a significant market trend: US refiners are experiencing exceptional profitability due to a widening 'crack spread' between crude oil and diesel prices. This is not driven by crude oil prices, which are lower than last year, but by record diesel prices and thin global distillate inventories, exacerbated by recent geopolitical events like the Saudi pipeline drone strike. This situation has led to substantial short-term gains for refiner stocks, with companies like Marathon and Valero reporting significantly increased refining margins and returning billions to shareholders. While Goldman Sachs forecasts a moderation of these record margins, they are still expected to remain well above historical averages into 2027, presenting a sustained opportunity for investors in the refining sector, though the current pace of gains may not be sustainable long-term.