Government bonds sold off around the world this week, pushing yields higher, as a jump in oil prices revived worries that inflation could linger longer than investors had expected.

At the center of the move was the U.S. 10-year Treasury note, whose yield climbed to its highest level since January 2025. Yields rise when bond prices fall, and the sell-off spread across major markets, lifting borrowing costs from Washington to Europe. Several markets saw yields reach their highest points in years.

The trigger was the price of oil. Crude climbed as renewed fighting involving the United States and Iran raised the prospect of disruptions to shipping through the Strait of Hormuz, one of the world's most important corridors for oil supply. Higher energy costs feed into inflation, and the concern among investors is that a sustained rise in oil prices could keep consumer prices elevated, complicating the path for central banks weighing interest-rate decisions.

The effect rippled into equities. Stocks slipped on Wall Street, pressured by the combination of costlier oil and the retreat in bonds. When yields climb, the fixed returns offered by government debt become more competitive with stocks, and higher borrowing costs can weigh on corporate profits and consumer spending alike.

Amid the turbulence, Treasury Secretary Scott Bessent spoke about the bond market, pointing to it as a measure of confidence even as the 10-year yield rose. His comments came as the administration monitored a market that serves as a benchmark for mortgages, corporate loans and government financing.

The developments reflected a familiar chain of cause and effect. Geopolitical conflict raises the risk to oil supplies. Oil prices rise. Higher energy costs raise the outlook for inflation. And expectations of persistent inflation can push investors to demand higher yields to hold bonds, since inflation erodes the value of the fixed payments those bonds provide.

What remains uncertain is how long the pressure will last. That depends heavily on the trajectory of the conflict in the Middle East and whether shipping through the Strait of Hormuz is actually disrupted. For now, markets are pricing in the possibility rather than the reality, and the size of the moves reflects how sensitive investors have become to any threat to the global energy supply.

References

1. 1.Financial news headlines — global bond sell-off and rise in 10-year Treasury yield
2. 2.Financial news headlines — oil price increase linked to U.S.-Iran conflict and Strait of Hormuz concerns
3. 3.Financial news headlines — Wall Street stock declines
4. 4.Financial news headlines — Treasury Secretary Scott Bessent's comments on the bond market