Government Bond Yields Surge as US-Iran Conflict Resurfaces

Long-dated sovereign bond yields in the United States and other advanced economies climbed to levels not seen in over a decade. The 30-year U.S. Treasury yield topped 5.33 %, while the 10-year Treasury rose above 4.74 %. Similar upward pressure appeared in Europe and Japan, pushing yields to three-decade highs in several markets.

The Guardian

The rally follows the collapse of a tentative cease-fire between Washington and Tehran, which ended without an agreement on reopening the Strait of Hormuz. Heightened geopolitical tension was amplified by former President Donald Trump’s statement that he would bomb Oman if the nation “gets in the way” of negotiations. The conflict-driven uncertainty lifted crude oil prices above $91 per barrel, prompting concerns that higher energy costs could feed inflation and force central banks to raise rates. At the same time, governments are expanding defence budgets, adding further fiscal pressure.

The Guardian

• U.S. 30-year Treasury yield: 5.33 % (highest since June 2007)

The Guardian

• U.S. 10-year Treasury yield: > 4.74 %

The Guardian

• Japanese 10-year government bond yield: 2.945 % (three-decade high)

The Guardian

• U.K. 10-year gilt yield: 5.176 %

The Guardian

• Germany 10-year yield: highest level since 2011

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• France 10-year yield: 16-year peak

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Dan Coatsworth, head of markets at AJ Bell, said that the surge reflects not only inflation and rate expectations but also worries about elevated government borrowing and the need for investors to be compensated for holding long-dated debt. Neil Wilson, a Saxo UK investor strategist, added that issuance on both the sovereign and corporate sides—particularly continued government spending and AI-related capital expenditure—has contributed to the multi-year highs across developed-market yields.

The Guardian

• “Rising long-dated bond yields are not driven solely by expectations of higher interest rates and inflation fears. They can also reflect concerns around high levels of government borrowing and investors demanding greater compensation for the risks of holding long-dated government bonds,” — Dan Coatsworth, the head of markets at AJ Bell

The Guardian

• “We are seeing bond yields across developed markets strike multi-year highs as fixed income investors grow nervous about a range of factors, from inflation and the Iran conflict to deeper structural concerns and fiscal worries. Issuance is clearly a factor – both on the government side (they can’t stop spending!) and on the corporate side (AI capex),” — Neil Wilson, a Saxo UK investor strategist

The Guardian