Global bond tantrum a wrenching and worrisome start to new year

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(Bloomberg) — For those unsettled by the relentless rise in government bond yields in the US and across much of the world lately, the message from markets is getting clearer by the day: Get used to it.

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The world’s biggest bond market and global bellwether is leading a reset higher in borrowing costs, with the prospect of a prolonged period of elevated rates carrying consequences for economies and assets everywhere.

Just days into 2025, yields on US government debt are surging as the risks to supposedly super-safe assets mount. The economy continues to power ahead — Friday’s blowout employment report provided the latest evidence — while the Federal Reserve is rethinking the timing of further interest-rate cuts and Donald Trump is returning to the White House with policies prioritizing growth over debt and price fears as borrowing has soared.

The rate on 10-year notes alone has soared more than a percentage point in four months and now is within sight of the 5% barrier last breached briefly in 2023 and otherwise not seen since before the global financial crisis nearly two decades ago.

Longer-dated US bonds have already touched that milestone, with 5% seen by many on Wall Street as the new normal for the price of money. Similar spikes are playing out internationally, with investors increasingly wary of debt from the UK to Japan.

“There is a tantrum-esque type of environment here and it’s global,” said Gregory Peters, who helps oversee about $800 billion as co-chief investment officer at PGIM Fixed Income.

For some, the shift upward in yields is part of a natural realignment after years of a near-zero rate environment following the emergency measures taken after the financial crisis and then Covid. But others see new and worrisome dynamics that present major challenges.

Given its role as a benchmark for rates and signal of investment sentiment, the tensions in the $28 trillion US bond market threaten to impose costs elsewhere. Households and businesses will find it more expensive to borrow, with US mortgage rates already back at around 7%, while otherwise upbeat stock investors are beginning to fret higher yields could be a poison pill for their bull market.

Corporate credit quality, which has remained generally strong amid the benevolent economic backdrop, also risks deterioration in a higher-for-longer environment.