Global Bond Yields Resume Climb as Fiscal and Inflation Fears Mount

A brief respite in global fixed-income markets has ended, with government bond yields rising for a second straight week as investor anxiety over fiscal deficits, hawkish central bank policy, and persistent inflation reasserts itself. Attempts by the U.S. Treasury to calm markets provided only temporary relief, with U.S. borrowing costs again approaching multi-decade peaks.

Yields Climb on Both Sides of the Atlantic

The selloff in sovereign debt was widespread, erasing recent gains and pushing key yields back toward significant highs. In the U.S., the benchmark 10-year Treasury yield climbed back toward 4.70%, while the 30-year bond yield hovered near 5.25%, reapproaching its recent 19-year high.

European debt markets also saw significant selling pressure:

• The German 10-year bund yield, a key benchmark for the eurozone, advanced to 3.254%, near its highest point since 2011.
• The German 2-year schatz yield rose to 2.841% as traders increased bets on a September rate hike from the European Central Bank (ECB).
• France's 10-year OAT yield settled near 4.10% amid a heavy schedule of government debt auctions.

Deficits and Inflation Weigh on Sentiment

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Recent verbal intervention from U.S. Treasury Secretary Scott Bessent, who suggested yields did not reflect fundamentals, failed to sustain a rally. While the Treasury doubled its long-end liquidity support, investors remain skeptical that buyback operations can offset the structural pressure from massive government bond sales and stubborn inflation.

Investor nervousness was amplified as data confirmed U.S. gross national debt surpassed $40 trillion for the first time. Although the Treasury Secretary dismissed the figure's significance, bond investors are demanding a higher term premium—or additional compensation for the risk of holding long-term debt—to absorb the expanding supply.

Energy Prices and Central Banks in Focus

Underpinning the defensive mood is persistent energy-driven inflation, with Brent crude holding near $93 a barrel. According to the source, geopolitical friction related to threats of sanctions against Tehran has depressed commercial tanker traffic through the Strait of Hormuz, constraining physical energy supply.

With government borrowing expanding and inflation remaining a concern, market participants are now looking ahead to the Jackson Hole economic symposium. Investors will be seeking guidance from central bank leaders on whether they will tolerate the recent rise in long-term borrowing costs or signal a potential adjustment to monetary policy.