U.S., UK bond yield rise reflects growth expectations, not credit stress

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US, UK bond yield growth

Highlights

Rising U.S. and UK sovereign yields reflect market expectations for stronger economic growth driven by AI-led productivity, not renewed inflation anxiety.
ICE Bank of America U.S. High Yield Index spreads remain tight despite higher yields, and U.S. bond and loan defaults have declined since January.
Ten-year UK gilt yields above 5 per cent and U.S. Treasury yields near January 2025 levels are not triggering broad corporate credit distress, suggesting resilience in credit markets.

AI growth thesis shapes rate outlook

As reported by Financial Times, the argument is that the recent rise in sovereign yields has less to do with renewed inflation anxiety and more to do with higher real rates, as markets price in stronger underlying economic potential.

In this reading, the natural rate of interest is moving higher because faster productivity growth, potentially led by artificial intelligence, allows economies to absorb a higher cost of capital without choking off expansion. The article notes that this view is shared by Federal Reserve governor Chris Waller, although it also acknowledges counter-arguments, including the idea that AI can be deflationary and that bond yields have often fallen after major AI model releases.

The column argues that even if AI reduces wages or headcount in some sectors, the broader effect could still be higher output and revenue generation across the economy. That, in turn, would support somewhat higher yields, though not necessarily extreme ones, while also improving public finances by lifting growth and helping reduce debt-to-GDP ratios.

Credit markets show limited distress

The case for calm is also supported by corporate credit pricing, where signs of acute market stress remain limited despite the move higher in yields. Spreads paid by lower-rated borrowers over U.S. Treasuries have stayed tight, rather than widening sharply as would normally be expected if investors were bracing for a wave of defaults.

The article cites the ICE Bank of America U.S. High Yield Index option-adjusted spread as roughly in line with its level at the start of the year, even after hawkish remarks by the Federal Reserve chair at Jackson Hole pushed front-end rates higher. It also says defaults among U.S. bond and loan issuers are lower since January, contrasting with the 2022 to 2024 hiking cycle, when 12-month defaults doubled to 3 per cent in the first year.

The broader conclusion is that current yield levels look less exceptional when set against longer market history. Ten-year UK gilt yields above 5 per cent and U.S. Treasury yields near January 2025 levels may appear severe to investors accustomed to the ultra-low-rate era, but the article argues they do not yet signal that corporate borrowers are being exposed on a large scale.

Our earlier article on elevated long-term U.S. Treasury yields explained why borrowing costs have stayed near multi-year highs despite efforts to pull them lower. It highlighted persistent fiscal deficits, concerns about policy and central-bank independence, and a surge in debt issuance tied to AI infrastructure that is intensifying competition for capital and keeping pressure on the long end of the curve.

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