The U.S. bond sell-off is pushing the 10-year Treasury yield towards 5%, raising fresh questions about how much higher rates markets can absorb. Borrowing costs, stock valuations and dealmaking are all coming under closer scrutiny as government debt climbs and companies continue spending heavily on artificial intelligence. Yet strong economic growth could still soften the blow, leaving investors to decide whether rising yields signal strength or growing financial strain.
Higher yields bite
Corporate borrowing costs are among the clearest risks if Treasury yields keep climbing. Higher rates make refinancing, acquisitions and capital expenditure more expensive, just as major companies are borrowing heavily to fund AI and data-centre projects.
Investment-grade credit spreads remain historically tight, suggesting investors still have confidence in large companies. Attractive Treasury yields could eventually draw more buyers into bonds, although narrow spreads leave less protection if credit conditions deteriorate.
Stocks face another challenge because higher bond yields give investors a more competitive alternative. Societe Generale strategist Albert Edwards noted that the ratio between the 30-year Treasury yield and stock dividend yields has reached its highest level since the dot-com bust.
Valuations alone may not cause a downturn, but expensive shares can become more vulnerable when negative news arrives. Dealmakers are already feeling similar pressure, with investors reporting weaker appetite and buyers becoming less willing to pay previous valuations.
Growth provides cushion
One important measure still points to resilience. The 10-year Treasury yield recently touched 4.8%, while nominal U.S. GDP growth reached 6.07% in the first quarter and 6.56% in the second. That gap means economic growth continues to exceed government borrowing costs, helping Washington carry large deficits. Trouble could build if yields move above nominal growth, allowing interest expenses to compound faster than revenues.
Real rates are also rising, with the Treasury’s long-term real-rate average reaching 2.92% from 2.55% at the end of last year. TD Securities strategist Gennadiy Goldberg said real rates have driven most of the recent increase in long-term yields, suggesting economic strength, rather than inflation alone, remains a major force behind the move.
