A broad selloff across global bond markets intensified on Tuesday as rising Middle East tensions and widening government deficits pushed investors to demand significantly higher yields for holding long-term sovereign debt.
The U.S. Treasury market led the move, with the 30-year yield climbing to 5.33%. That marked its highest level since June 2007 and pushed the long end of the yield curve into territory not seen in nearly two decades.
U.S. Treasury Yields Surge Across the Curve
The selloff was not limited to long-dated bonds.
The policy-sensitive two-year Treasury yield rose for a third straight session to 4.194%, while the benchmark 10-year yield advanced to 4.742%.
The 10-year yield is now trading near its highest levels since January 15, 2025.
Daniela Hathorn, senior market analyst at Capital.com, said long-term yields are being driven higher by persistent inflation concerns, heavy government borrowing and increased competition for capital.
She also pointed to debt issuance linked to the artificial intelligence investment boom as another factor putting pressure on bond markets.
Higher Yields Tighten Financial Conditions
The jump in long-term borrowing costs creates significant risks for the broader economy and financial markets.
Long-dated U.S. Treasury yields serve as key benchmarks for mortgage rates and corporate borrowing costs. As a result, a 30-year yield above 5.30% can quickly make financing more expensive for households and businesses.
Higher borrowing costs may place additional pressure on the housing market, where affordability is already a major concern.
Companies may also become more cautious about capital spending if credit remains expensive.
Government Debt Costs Continue to Rise
Higher yields also create challenges for the U.S. government.
As older Treasury securities with lower interest rates mature, they must be replaced with new debt carrying much higher borrowing costs.
That increases federal interest expenses and adds further pressure to already large budget deficits.
In turn, the government may need to issue even more debt, potentially putting additional downward pressure on bond prices and upward pressure on yields.
Higher risk-free rates can also weigh on equity valuations because investors demand larger returns to justify owning stocks.
European Bond Markets Join the Selloff
The bond rout quickly spread across Europe.
Germany’s benchmark 10-year Bund yield rose to 3.22%, reaching its highest level since May 2011.
The two-year German Schatz yield also climbed sharply to 2.822%, its highest level since late July.
The move came as traders reduced expectations for aggressive interest-rate cuts from the European Central Bank.
In the United Kingdom, the two-year gilt yield rose to 4.558%, reaching its highest level since May 2026.
Italy’s 10-year government bond yield also climbed to 4.06%, its strongest level since late July.
Japan’s 10-Year Yield Hits Three-Decade High
Asian bond markets faced similar pressure.
Japan’s 10-year government bond yield increased by 2.5 basis points to 2.945%.
That pushed the yield to its highest level since September 1996.
Investors are increasingly betting that the Bank of Japan may need to accelerate its monetary policy normalization process, particularly as officials face pressure to stabilize the Japanese yen.
Middle East Tensions Trigger Inflation Fears
One of the main catalysts behind the global bond selloff has been the sharp deterioration in geopolitical conditions across the Persian Gulf.
The breakdown of a framework ceasefire agreement and Washington’s refusal to extend temporary arrangements have increased concerns about a broader conflict.
Iran has reportedly shifted toward a more aggressive military posture, while commercial shipping through the Strait of Hormuz remains severely disrupted.
At the same time, Brent crude has climbed above $91 per barrel.
Oil Shock Raises Stagflation Risks
The surge in energy prices has forced bond traders to reconsider earlier expectations that slowing economic growth would lead to rapid central bank rate cuts.
Instead, investors are increasingly treating the latest oil shock as a potential stagflationary event.
Higher energy prices can increase transportation, manufacturing and consumer costs even if economic growth weakens.
That creates a difficult environment for central banks.
The Federal Reserve, European Central Bank and Bank of England may be forced to keep interest rates restrictive for longer if inflation pressures remain elevated.
Bond Investors Remain Defensive
With long-term sovereign yields reaching levels not seen since before the 2008 financial crisis, fixed-income investors are taking a cautious stance.
Many traders appear reluctant to increase exposure to long-duration bonds while oil prices remain elevated and geopolitical uncertainty continues.
Until energy supply risks ease and inflation pressures become more predictable, global bond markets could remain volatile.
The combination of rising government borrowing, elevated oil prices and persistent inflation concerns may continue to keep long-term yields under upward pressure.
