Oil tops $100/bbl after Hormuz tensions

Oil is the story here, but the real issue is a shipping chokepoint. The Strait of Hormuz is the narrow exit for a huge share of Gulf crude, so when traffic through it gets disrupted, traders stop thinking about normal supply-and-demand and start pricing a war premium. That is what happened this week. Brent pushed above $100 a barrel after attacks tied to Iran hit ships and energy infrastructure near the Gulf, while Washington publicly pressed for the strait to reopen. Why does Hormuz matter so much? Because a lot of the world’s seaborne oil has to pass through it, and there is no clean substitute route for all of that volume. If tankers are delayed, insurers reprice risk, shipowners pull back, and refiners start bidding up crude that is still moving. The market does not need a full blockade to panic. It just needs enough attacks, enough uncertainty, and enough hesitation from vessels that normally treat the route as routine. What changed this week? Iran’s campaign widened beyond rhetoric. Reuters and CNBC reports tied the latest jump to attacks on a UAE oil port and commercial shipping, including a South Korean vessel in the Strait of Hormuz. That pushed Brent to intraday levels above $110 earlier in the week before prices eased back toward the low $100s by Wednesday, which tells you the market is trading headlines, not calm fundamentals. Why does that hit drivers so fast? Gasoline prices do not move one-for-one with crude, but crude is still the biggest input. AAA’s national average for regular hit $4.536 on May 6, 2026. That is already above the $4.45 level that got attention earlier in the week, and it lands right before the summer driving season, when demand usually rises anyway. So households are getting the geopolitical shock and the seasonal squeeze at the same time. Why are bond traders talking about the 2s10s curve? Because an oil shock scrambles the usual growth-and-inflation mix. Higher energy prices can slow activity by taxing consumers, but they can also lift headline inflation and inflation expectations. That combination often pushes long-end yields around more than front-end yields, especially if traders think the Fed may have less room to ease. The 10-year minus 2-year spread has indeed been steepening from deeply inverted levels, even if the exact daily move is still being driven by multiple forces, not oil alone. Does this automatically mean a lasting inflation problem? Not necessarily. The catch is duration. A brief spike acts more like a tax shock — painful, but often temporary. A prolonged disruption is different. Then transport costs rise, airlines and shippers reprice, chemical and manufacturing inputs get more expensive, and businesses start passing costs through more broadly. Basically, one narrow waterway can end up in groceries, airfares, and central-bank headaches. So what should people watch now? Not just the oil price. Watch tanker traffic through Hormuz, insurance and shipping behavior, and whether diplomatic efforts actually reopen normal flows. Also watch whether Brent stays above $100 after the immediate panic fades. If it does, the move stops looking like a scare and starts looking like a new inflation impulse. The bottom line is simple. The market is not reacting to abstract Middle East risk. It is reacting to a specific bottleneck that suddenly looks fragile. If Hormuz stays unstable, oil above $100 becomes more than a headline — it becomes a macro problem.