On a Thursday in late July, oil crossed back above one hundred dollars a barrel for the first time since late May, as Yemen's Houthis claimed strikes on Saudi tankers and opened a second narrow passage of sea to the fear of war. The shock spread outward in a familiar way: yields climbed toward levels not seen in more than a year and a half, stocks slid, and central bankers who had hoped the worst of inflation was behind them began to reckon with it again. Washington, meanwhile, argued over the war in votes that split narrowly and pointed in opposite directions. What is unfolding is less a sing
Brent Tops $100 as Houthi Tanker Strikes and Bond Selloff Rattle Markets
A second chokepoint in a war that has already throttled Hormuz
Mark
Why does a claimed strike on two tankers move bond yields?
Mimi
Oil feeds inflation. Brent settled at $100.69, up about 7%, and the 10-year yield rose to around 4.7%, the highest since January 2025.
Luke
Keep in mind that the strikes are Houthi claims. The reporting says they claimed them, not that they were independently confirmed.
Mark
What makes the Red Sea matter here?
Mimi
It's a second chokepoint. The Strait of Hormuz is already throttled by the war, so another route under threat compounds the supply worry.
Luke
Fair, but how much oil is actually disrupted is not stated. The price jump reflects fear as much as any measured loss.
Mark
Stocks fell too, but the picture seems tangled.
Mimi
Yes. The S&P 500 fell 1.2% and the Nasdaq 2.2%, partly from AI spending worries at Tesla and Alphabet, which followed a roughly $500 billion loss.
Luke
So we can't pin the drop on oil alone. Several things hit at once, and the source doesn't say how much each contributed.
Mark
And Congress?
Mimi
The House voted 214-208 to pull forces from hostilities with Iran, and the Senate rejected its version 49-47. So nothing changes yet.
Le Pouls
- Brent surged about 7% to settle at $100.69 after Houthi claims of strikes on two Saudi tankers threatened a second chokepoint beside the already throttled Strait of Hormuz.
- The 10-year Treasury yield jumped toward 4.7%, its highest since January 2025, and the 30-year sits above 5% for the longest stretch since 2007, reigniting fears of inflation.
- The S&P 500 and Nasdaq suffered their worst days since June 23 as investors absorbed oil, bond, and AI-spending shocks at once.
- Washington is pushing back with thirteen straight nights of strikes on Iran and threats of major punishment, while a divided Congress passed one war powers resolution in the House and rejected another in the Senate.
- Traders are now pricing an ECB rate hike in September, and the next signals from Frankfurt and from the war powers votes will decide whether this spike hardens into a lasting inflation shock.
On a Thursday in late July, oil crossed back above one hundred dollars a barrel for the first time since late May, as Yemen's Houthis claimed strikes on Saudi tankers and opened a second narrow passage of sea to the fear of war. The shock spread outward in a familiar way: yields climbed toward levels not seen in more than a year and a half, stocks slid, and central bankers who had hoped the worst of inflation was behind them began to reckon with it again. Washington, meanwhile, argued over the war in votes that split narrowly and pointed in opposite directions. What is unfolding is less a single market event than an old lesson relearned, that the price of a barrel of oil is never only about oil, but about who can still move the world's most vital waters and how long they are willing to keep doing it.
Brent crude closed above $100 a barrel on Thursday for the first time since May 26, settling at $100.69 after a gain of roughly seven percent. The jump followed a claim by Yemen's Houthis that they had struck two Saudi oil tankers in the Red Sea. For a world already choked by the war around the Strait of Hormuz, it meant a second waterway had become a target, and markets reacted as though the squeeze had only just begun.
The pain did not stay in the oil pits. The 10-year Treasury yield rose to about 4.7 percent, its highest since January 2025, and the 30-year held above 5 percent for a stretch not seen since 2007. Inflation, which many had hoped was fading, came back into view. The S&P 500 and Nasdaq posted their worst days since June 23, though futures steadied after hours.
In Washington, the President warned Iran of "major military punishment" after thirteen consecutive nights of American strikes, and tied a new nuclear arrangement with Saudi Arabia to that country's willingness to join the Abraham Accords. Congress, meanwhile, split. The House voted narrowly to direct the removal of U.S. forces from hostilities, and the Senate rejected its own version hours later.
Across the Atlantic, the European Central Bank held rates steady, yet traders now expect a hike in September, and Christine Lagarde warned that renewed hostilities and rising oil posed a clear risk to euro zone inflation. The question hanging over the coming weeks is whether a sea lane and a war can be contained before a barrel of oil reshapes the cost of money everywhere.
Brent crude closed above $100 a barrel on Thursday for the first time since May 26, settling at $100.69, a gain of about 7% on the day. The trigger was a claim by Yemen's Houthis that they had struck two Saudi oil tankers in the Red Sea. That opened a second chokepoint in a war that has already throttled the Strait of Hormuz. West Texas Intermediate was up about 0.11% to $92.28 a barrel during Asia trading hours.
The bond market reacted to the renewed inflation worry. The 10-year Treasury yield rose more than 4 basis points to around 4.7%, its highest level since January 2025. The 30-year yield, at 5.17%, is in its longest stretch above 5% since 2007.
Equities took the hit. The S&P 500 fell 1.2% and the Nasdaq dropped 2.2%, their worst one-day performances since June 23. The Dow lost around 1%, its fifth negative day in six. The session came on top of a loss of roughly $500 billion tied to the AI spending plans of Tesla and Alphabet. Shares of both companies fell sharply after they signaled higher AI outlays, though stocks recovered in after-hours trading, and futures for the three major U.S. indexes were little changed afterward.
In Washington, President Donald Trump said the U.S. will hold Iran responsible for any further attacks, warning of "major military punishment." American forces had just completed a 13th consecutive night of strikes on Iran. Trump also said that under the landmark nuclear deal signed this week, Saudi Arabia will not enrich uranium, and that the arrangement is contingent on Riyadh joining the Abraham Accords and normalizing ties with Israel.
Congress split on the war. The House voted 214-208 for a resolution directing Trump to remove U.S. forces from hostilities with Iran. Hours later, the Senate rejected its own version 49-47.
The oil move is already reaching central banks. The European Central Bank held rates steady, but traders are pricing a hike in September. President Christine Lagarde warned that renewed Middle East hostilities and the rebound in oil prices pose an upside risk to the euro zone inflation outlook. In Japan, core inflation for June edged up from a four-year low as higher oil prices fed through.
Trade policy adds another pressure. The Trump administration will impose new tariffs of 10% to 12.5% on dozens of countries over alleged forced-labor violations, effective just after midnight ET on Friday. The timing matches the expiry of Trump's temporary 10% global tariffs.
The corporate news was mixed. Intel reported 25% revenue growth, its fastest since 2011, and its shares rose more than 4% after hours. Google Cloud revenue also surged, and cloud chief Thomas Kurian said customers are spending 50% more. In Brussels, EU regulators fined Google 890 million euros ($1 billion), the first penalty under the Digital Markets Act, for favoring its own services. Oracle won a 10-year Pentagon software contract worth up to $7 billion, lifting its shares in extended trading.
Watch the ECB's path toward a possible September hike, and whether the split war powers votes change U.S. policy on Iran.
Citations marquantes
The U.S. will hold Iran responsible for any further attacks, with the threat of "major military punishment."— President Donald Trump
Renewed Middle East hostilities and the rebound in oil prices pose an upside risk to the euro zone inflation outlook.— Christine Lagarde, ECB president (paraphrased)
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