The US 10-Year Treasury yield officially broke above 4.70% on July 23, its highest level since January 2025, according to the Kobeissi Letter, surpassing even the high set during last year's tariff driven Liberation Day selloff in April 2025. The move puts the benchmark yield on track for a fresh 52-week high and confirms that bond markets are treating the widening Iran war, not the rate cuts investors expected earlier this year, as the dominant driver of long-term borrowing costs. The 10-Year yield sets the benchmark rate for mortgages, corporate borrowing, and how expensive the US government's own debt is to finance, so a fresh high here ripples well beyond bond trading desks. It follows a week in which the 30-Year Treasury yield has already spent an unusually long stretch above 5%, and comes on the same day Brent crude and US crude both surged after Houthi forces struck Saudi oil tankers directly. Kobeissi frames the move bluntly, saying the bond market is flashing red. Rising long-term yields typically raise the discount rate applied to future corporate profits, a headwind that lands hardest on richly valued growth and AI stocks, while also raising Washington's own interest bill on new debt issuance.
Why it matters · A fresh 52-week high in the yield that anchors mortgages, corporate credit, and US government borrowing costs signals that bond markets now treat the Iran war as a lasting inflation risk rather than a passing scare, which is exactly the kind of shift that punishes expensive growth and AI stocks first.
Worth asking · The 10-Year yield just broke above last year's tariff-panic high, driven by an oil war rather than tariffs this time. Do you think this yield spike forces the Fed's hand toward emergency support, or is it a slow burn markets can absorb?