U.S. Treasury bonds have come under renewed selling pressure as investors reassess inflation, fiscal risks and the outlook for interest rates. The 10-year Treasury yield climbed to 4.81%, approaching the closely watched 5% threshold. Analysts warn that a further rise could add to volatility in an already unsettled stock market.

The latest pressure on U.S. bonds is closely tied to rising energy prices. The conflict in the Middle East has pushed oil prices higher, reviving concerns that inflation could accelerate. Higher energy costs could make it more difficult for the Federal Reserve to ease monetary policy, while investors are increasingly demanding higher returns to hold longer-term government debt.

The rise in Treasury yields also means higher borrowing costs across the economy. Mortgage rates and other consumer financing costs could come under pressure, while the U.S. government would face greater expense when refinancing and issuing new debt. The 30-year Treasury yield has also moved close to a 19-year high, highlighting the strain in the long-term bond market.

Another source of pressure is the growing supply of corporate debt. Major technology companies are issuing bonds to finance investments tied to the artificial intelligence boom, adding competition for investors' money. Meanwhile, the 2-year Treasury yield rose to 4.41%, its highest level since January 2025, as traders increased bets on another U.S. rate hike. The combination of inflation concerns, heavy borrowing and rising yields suggests the U.S. bond market may remain volatile.