Hormuz risk repriced into markets

Markets are now pricing the Strait of Hormuz as a live supply shock, with oil, shipping and some metals all moving on whether traffic resumes. (iea.org) The immediate trigger was a new United States blockade on vessels entering or leaving Iranian ports, announced after talks with Iran failed over the weekend of April 11-12. Reuters reported oil climbed about 4% on April 13, while CNBC said United States crude settled at $99.08 a barrel and Brent traded above $100. (reuters.com, cnbc.com) That move reversed part of the relief rally from April 8, when a two-week ceasefire briefly pushed Brent as low as $91.70 a barrel after Iran said it would reopen the waterway. By April 15, tanker transits were still running about 90% below prewar levels, according to shipping data cited by CNBC. (bloomberg.com, cnbc.com) The Strait of Hormuz is the narrow sea lane between Iran and Oman that carries some of the world’s most important energy cargoes. The United States Energy Information Administration said 20 million barrels a day moved through it in 2024, equal to about 20% of global petroleum liquids consumption. (eia.gov) The same route also carried about one-fifth of global liquefied natural gas trade in 2024, mostly from Qatar, and the Energy Information Administration said there are few practical alternatives if the strait is shut. That is why traders are treating shipping disruption like lost production, not just a logistics problem. (eia.gov, dallasfed.org) Industrial metals have been pulled into the same repricing. Bloomberg reported aluminum jumped 3.1% on April 13 to $3,607.50 a metric ton in London, the highest in four years, as traders weighed fresh risks to Persian Gulf shipments and energy-intensive smelting. (bloomberg.com) Analysts and official agencies are now framing the issue less as a one-day oil spike and more as a volatility regime. The International Energy Agency said on April 14 that resuming Hormuz flows is “the single most important variable” for easing pressure on supplies, prices and the wider economy. (iea.org) The economic warnings have widened with the market reaction. The International Monetary Fund’s April 2026 outlook modeled a short disruption with oil averaging $82 this year, an adverse case at $100, and a severe case with oil at $110 in 2026 and $125 in 2027, with global growth slowing to 2% in 2026 in that last scenario. (imf.org, abc.net.au) Federal Reserve Bank of Dallas economists put the scale in historical terms on March 20. They wrote that a complete stop in Gulf exports would remove close to 20% of global oil supplies, compared with roughly 4% to 6% in the major oil shocks of 1973, 1979, 1980 and 1990. (dallasfed.org) That is why the market conversation has shifted from crude alone to hedging, freight, insurance and cross-asset volatility. Until shipping through Hormuz looks normal again, traders are treating every ceasefire headline and every tanker movement as a market-moving data point. (iea.org, cnbc.com)