US Treasuries retreated as investors reassessed what had long been treated as an unquestioned refuge. The trigger was not data, nor central bank guidance, but politics. More precisely, the latest tariff threats by Donald Trump tied to Greenland, which unsettled confidence in US assets and reignited fears that trade weaponisation could re import inflation into an already fragile equilibrium.
Losses were concentrated at the long end of the curve. The 30-year Treasury yield rose six basis points to 4.91% as trading resumed after the US holiday. Trump’s willingness to threaten European partners with tariffs as leverage over Greenland reminded foreign investors that US policy risk is no longer episodic, it is structural.
The move was reinforced by turmoil elsewhere. Japanese government bonds sold off sharply after Prime Minister Sanae Takaichi floated food tax cuts as an electoral pledge, pushing 30- and 40-year JGB yields by more than 25 basis points. Australian and New Zealand debt weakened in sympathy, while German Bund futures also slipped. What began as a US-specific political shock rapidly became a global duration event.
The administration’s actions have dulled Treasuries’ appeal as a safe asset. Markets increasingly assume that Trump will seek to stimulate asset prices ahead of the midterms, and tariffs, whatever their political branding, are inherently inflationary.
This comes at a delicate moment for global bond markets. After their strongest annual rally since 2020, government bonds have stumbled at the start of the year as investors demand higher compensation for persistent inflation and swelling public deficits. Trump’s renewed tariff threats risk amplifying both inflation expectations and fiscal anxiety.
More fundamentally, Treasuries are losing something intangible but vital, their status as the ultimate geopolitical hedge. Expanding US deficits, combined with an increasingly unilateral foreign policy, are eroding confidence that the world’s largest bond market will still provide shelter when risk sentiment turns.
Europe alone holds trillions of dollars in US equities and Treasuries, much of it through public institutions. This has revived speculation that some of those holdings could be reduced in response to a fresh trade confrontation, a shift that would mechanically push US borrowing costs higher and pressure equity valuations in an economy still dependent on foreign capital.
The United States has become a source of uncertainty rather than a refuge. Bloomberg strategists frame the issue more broadly. As globalisation fragments, debt issuance to fund defence, social spending, and energy transitions is accelerating. With central banks reluctant to cut rates aggressively, sovereign bonds can no longer be assumed to hedge geopolitical shocks.
Another fault line runs through Japan. Rising domestic yields are making US Treasuries less attractive to Japanese investors after hedging costs are factored in. The increases in JGB yields could prompt capital repatriation, adding further upward pressure on US yields.
None of this suggests an imminent collapse. But it does mark a regime change. The world is beginning to price a simple but uncomfortable truth: when geopolitics becomes transactional, even the deepest markets demand a risk premium.