Gulf Tensions Lift Oil Above $110, Pushing Yields to 15-Month Highs

U.S. Treasury yields held mostly steady Monday after a sharp climb last week that left investors rattled over rising energy costs and fresh signs of inflation. The 10-year note yield eased one basis point to 4.587 percent, while the 30-year bond slipped to 5.119 percent. Both had touched multi-month highs amid worries that higher oil prices would feed through to everyday prices at the pump and on store shelves.

The latest pressure stems from escalating tensions in the Gulf. Drone strikes hit a nuclear plant in the United Arab Emirates and Saudi defenses intercepted additional attacks, as shipping through the Strait of Hormuz slowed to a trickle. That narrow waterway normally carries one-fifth of global oil and gas trade. Brent crude climbed above 110 dollars a barrel, and U.S. crude topped 102 dollars, with longer-dated contracts holding well over 100 dollars into year-end. Traders described the moves as a direct bet that supply disruptions could linger.

President Trump called on Iran to act quickly toward a deal, but markets showed little confidence that talks would ease the strain anytime soon. The uncertainty comes as new U.S. data already pointed to price pressures reaching consumers. Higher borrowing costs for the government add another layer, with the 30-year yield particularly sensitive to concerns over deficits and political risk.

Finance officials from the G7 gathered in Paris to discuss energy security and raw materials. European Central Bank President Christine Lagarde admitted she worries about bond-market volatility, calling it part of her job. Yields on German bunds and Japanese government bonds also moved higher, extending a global selloff that began the prior week. In Britain, 10-year gilt yields followed the same upward path.

Stock markets worldwide turned lower as investors weighed the combination of expensive energy and potential growth slowdowns. Technology shares faced extra scrutiny ahead of key earnings reports, while broader indexes reflected caution over how long the current price spike might last. Analysts noted that futures pricing for oil into the fall and winter suggested traders see little relief on the horizon.

For American households the effects are straightforward. Elevated gasoline and heating costs squeeze budgets already strained by years of rising prices. Mortgage rates tied to Treasury yields have climbed in tandem, making home purchases more expensive. The pattern repeats earlier episodes where foreign conflicts and supply shocks translated into direct hits on family finances rather than abstract market noise.

Treasury Secretary Scott Bessent joined the Paris talks as part of efforts to coordinate responses, yet the underlying drivers remain geopolitical. With the Strait of Hormuz effectively narrowed and oil futures locked higher, the near-term outlook centers on whether any diplomatic breakthrough can restore normal flows before winter demand peaks. Markets appear prepared for the possibility that they cannot.