US oil refiners are posting some of their most profitable quarters as global fuel supplies tighten and refineries run at high rates to meet demand. Financial Post and Bloomberg both describe the gains as tied to a broader fuel crunch influenced by years of domestic refinery closures in the United States and disruptions to supply caused by wars. As available refining capacity has become more limited, profit performance improves for operators that can secure crude supply and produce refined products when inventories are constrained. The reports characterize refiners as operating “all-out” to meet needs across markets, reflecting higher margins during the period of supply tightness. While the outlets do not present detailed company-by-company figures in the provided excerpts, both point to the same underlying drivers—reduced refining capacity and geopolitical and conflict-related supply disruptions—supporting stronger earnings for refiners during the shortage. Overall, the coverage links the recent surge in profits to the combination of tighter worldwide supply and refiners’ ability to process more volume under constrained conditions.