Recent strength in U.S. economic data and persistent inflation concerns have driven the 30-year Treasury yield sharply higher through September 2026, with the benchmark climbing from levels near 5.24% early in the month to intraday peaks above 5.50% by late September—its highest readings since 2004. This move reflects market-implied odds pricing in a more restrictive Fed policy path than previously anticipated, alongside elevated Treasury supply and firm growth expectations that lifted term premiums. Traders monitoring the September low now focus on whether any brief dip below 5.30% holds as the final print or if the late-month selloff locks in a higher trough. Key upcoming releases, including October employment and CPI data, could still influence any residual volatility before month-end resolution.