Key Takeaways:
Oil prices logged their biggest single-day gain in six years after President Donald Trump reimposed a blockade on the Strait of Hormuz, threatening to charge a 20% toll on all cargo transiting the world's most critical energy chokepoint.
WTI crude jumped 9.4% to settle at $74.62 a barrel, while Brent crude surged 9.6% to $79.31, before extending gains to top $83 in Asian trading Tuesday — the largest one-day percentage increase since April 2020. The spike erased weeks of price moderation following a brief US-Iran ceasefire last month and reignited inflation fears across global markets.
"The blockade has restarted, the ceasefire is in jeopardy, and they are shooting at each other again — the chaos has returned," said Alexander Morris, chief executive officer at FM Investments. The US launched retaliatory airstrikes against Iranian targets over the weekend after a commercial container ship was attacked in the strait, with digital tracking platforms showing a near-standstill in commercial transit despite US Navy escort operations.
The surge rippled through Asian equity markets, with Hong Kong-listed oil and gas equipment stocks leading the charge. Shandong Molong (00568.HK) jumped 15%, Sinopec Oilfield Service (01033.HK) rose 5%, and Dalipal Holdings (01921.HK) gained 2%. The moves came as traders priced in sustained disruption to supply routes that handle roughly 20% of the world's petroleum consumption. South Korea's KOSPI bore the brunt of the risk-off shift, plunging 9% to 6,806.93, while Japan's Nikkei 225 fell 1.9% and the Shanghai Composite dropped 2.1%. Hong Kong's Hang Seng Index bucked the trend with a 0.2% gain, supported by defensive positioning in state-backed energy shares.
Supply risks compound as US reserves hit 42-year low
The supply shock arrives at a precarious moment for global oil markets. US crude inventories in the Strategic Petroleum Reserve fell to 316.5 million barrels last week, the lowest level since April 1983, after releasing 98.9 million barrels since the US-Iran conflict escalated in late February. Compounding the pressure, Russia's crude output dropped to its lowest in at least two and a half years in June following Ukrainian attacks on its energy infrastructure.
The inflationary implications of the energy spike reverberated across fixed-income markets. The 2-year US Treasury yield surged to 4.2393%, its highest since early 2025, while the 10-year yield edged up to 4.58%. Federal Fund futures priced in an implied 39 basis points of further policy tightening before year-end, complicating the outlook for the Federal Reserve as it prepares for Chairman Kevin Warsh's congressional testimony this week.
The last time oil prices moved this sharply on a geopolitical shock was in February 2026, when the initial US-Iran conflict sent Brent above $90 a barrel. That spike was followed by a three-month period of elevated volatility, with the VIX averaging above 25 and energy stocks outperforming the broader market by more than 1,000 basis points. With the June Consumer Price Index report due Tuesday and Q2 earnings season set to begin, traders are bracing for an extended period of cross-asset turbulence.
This article is for informational purposes only and does not constitute investment advice.
