30-Year Treasury Yield Reaches 5.327%, Highest Since 2007

The 30-year US Treasury yield hit 5.327% on August 18, 2026 — its highest since 2007 — up from 5.13% in May. Oil above $90 and Iran war supply fears drove the selloff, which spread to Japan and Europe. Rising yields mean falling bond prices and higher borrowing costs for mortgages and corporate debt.