China Unexpectedly Sells Crude Oil From Stockpiles Amid Iran Supply Crisis

Chinese state oil companies have been aggressively selling crude oil from their commercial stockpiles to multiple nations in recent weeks, according to Marco Dunand, chief executive officer of commodity trading house Mercuria Energy Group. Speaking at the FT Commodities Global Summit in Lausanne on 21 April 2026, Dunand revealed that over the past two to three weeks Chinese firms have been offering barrels aggressively in tenders, effectively removing Chinese demand from a tight global market while monetising inventories accumulated at much lower prices.

This unusual wave of selling from the world largest crude importer reflects a calculated arbitrage strategy. Throughout 2025, China stockpiled an estimated one million barrels per day when benchmark prices were hovering near 60 dollars. By December 2025, combined state and commercial strategic inventories were estimated at nearly 1.4 billion barrels. With prices surging following the effective closure of the Strait of Hormuz on 28 February 2026, Chinese oil companies have been drawing down these cheaper barrels and reselling portions into export tenders rather than buying expensive cargoes on the spot market.

The strategy explains several market signals observed in recent weeks. Chinese crude imports fell 2.3 percent year-on-year in March 2026, even as first-quarter volumes remained up 8.9 percent thanks to earlier stockpiling. By effectively stepping back from the import market and simultaneously releasing barrels to foreign buyers, Beijing has shielded its domestic refining system from the full cost shock while also capturing premium prices on outbound sales. The country largest refining hub, the Sinopec Zhenhai complex in Ningbo with a combined capacity exceeding 50 million tonnes per year, continues to operate from inventory rather than from freshly imported barrels.

China objectives behind this move appear to be multiple. The first is pure financial arbitrage, selling barrels bought near 60 dollars into a market trading well above that level. The second is domestic stability, maintaining refinery runs and fuel supply without importing the current price spike into the internal economy. The third is geopolitical positioning, channelling cargoes to partner nations facing Middle East supply stress and reinforcing China role as a swing supplier in Asian markets. The fourth is strategic optionality, preserving the ability to return as a large-scale buyer once the market rebalances.

Dunand warned that this sell-down is nearing its end. Once inventories are drawn back to operational levels, which he estimated would take roughly three weeks from mid April 2026, China will need to re-enter the market aggressively to keep refineries supplied. When the world largest crude importer switches from net seller back to large-scale buyer, the impact on global balances is expected to be significant. A market already dealing with the loss of Hormuz throughput, the March 2026 coordinated IEA strategic stock release, and constrained Middle East flows would face renewed upward pressure on prices.

The International Energy Agency coordinated emergency release of strategic oil stocks earlier in March 2026 partly offset the supply shock, but those reserves are finite. Combined with China imminent return as a buyer, traders expect the supply demand balance to tighten further through the second quarter of 2026. Refiners across Asia have already faced warnings that crude processing could be cut substantially in April if disruptions persist, and the return of Chinese import demand would reduce the volume of barrels available to other buyers in Europe, India, and South Korea.

For global supply chains, the Chinese stockpile strategy has acted as a temporary shock absorber during the most acute phase of the Iran related disruption. However, the transition from seller back to aggressive buyer risks reigniting the price rally and tightening physical availability of crude grades that are suitable for complex refineries, including medium sour barrels traditionally sourced from the Persian Gulf.