The round trip: how the oil market absorbed the largest supply shock in its history and ended the summer near $100 anyway
Iran's closure of the Strait of Hormuz removed roughly a quarter of the world's seaborne oil trade in early March 2026 — a disruption the International Energy Agency called the largest in the history of the oil market. Six weeks later Brent crude had peaked at $118; ten weeks after that it was back below $71, the pre-war price, even though measured oil flows through the strait never exceeded about 40 percent of normal. This report reconstructs the price arc and the physical flows from primary data, quantifies the emergency measures that bridged the gap — a record 400-million-barrel IEA release — and documents what did not round-trip: war-risk insurance, transit counts, and the price of moving a barrel out of the Gulf. The evidence supports a specific conclusion about what oil prices actually measured this year, and it is not the volume of oil moving through the strait.
