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

The 30-year US Treasury yield hit 5.327% on August 18, 2026 — its highest since 2007 — capping a summer-long climb from 5.13% in May. Oil above $90 and Iran war supply fears fueled the selloff, which spread to Japan and Europe. Higher long-term yields raise borrowing costs for mortgages and corporate debt; bond prices fall as yields rise.