Saudi Aramco recently announced a record-breaking increase in its Official Selling Prices (OSPs) for May, signaling severe stress in the global oil market.
At the heart of this price hike is a phenomenon called extreme backwardation in the Middle East's key oil benchmark, Dubai/Oman crude. This simply means that oil for immediate delivery became vastly more expensive than oil for future delivery. Aramco's pricing formula is directly linked to this benchmark's monthly average, so when the benchmark's cash-futures spread exploded to an average of over $37 in March, a record OSP was mechanically guaranteed.
This market dislocation was triggered by a dual shock. First, the physical supply shock. The escalating war in the Middle East led to a near-total shutdown of the Strait of Hormuz, a critical chokepoint for oil tankers. This drastically reduced the amount of medium-sour crude—the specific type many Asian refineries are built to process—available for immediate delivery.
Second, a technical benchmark shock occurred simultaneously. Platts, the agency that assesses the Dubai benchmark, suspended the inclusion of oil loaded from the Persian Gulf due to the logistical chaos. This suddenly shrank the pool of eligible barrels for the benchmark price, causing a frantic bidding war for the few remaining deliverable cargoes and sending their prices into the stratosphere.
In response, the International Energy Agency (IEA) announced a historic release of 400 million barrels from emergency reserves. While this move helped calm overall futures markets like Brent, it couldn't solve the core problem: the acute shortage of deliverable Middle East medium-sour barrels. The barrels that underpin the Dubai benchmark remained the most expensive in the world, so the OSP hike was unavoidable.
For Asian refiners, this means a massive jump in feedstock costs, putting immense pressure on their profit margins unless they can pass the cost on to consumers. The situation highlights how geopolitical conflict, combined with the technicalities of market benchmarks, can create extreme price volatility.
- Official Selling Price (OSP): The price at which a national oil company, like Saudi Aramco, sells its crude oil to customers. It's typically set as a premium or discount to a regional benchmark.
- Backwardation: A market situation where the spot or cash price of a commodity is higher than its forward or futures price. It signals tight immediate supply.
- Medium-Sour Crude: A type of crude oil with moderate density (medium) and high sulfur content (sour). Many large refineries, particularly in Asia, are configured to process this type of oil.