10-Year Touches 4.99% as $5.2B Treasury Buyback Underwhelms After Hot Core CPI
Hot August core inflation lifted hike odds into the Sept 16 FOMC as long end supply met limited demand.

On Sept 11, 2026, the 10-year touched 4.992% intraday and closed at 4.97% on CNBC and 4.96% on AdvisorPerspectives, after printing 4.979% in Asia trade on Reuters. On Sept 10 it had touched 4.954%. The 2-year closed at 4.628% on CNBC, the highest since July 2024, with the 30-year at 5.356%. August CPI at 8:30 a.m. ET showed headline up 0.4% on the month and 3.4% on the year, in line, with core up 0.3% on the month against 0.2% expected and 2.4% on the year. Treasury offered up to $6B of 10 to 20 year bonds on Sept 10 and accepted $5.2B, leaving the market just short of 5% for the first time since Oct 23, 2023, when the 10-year hit 5.02% intraday and settled at 4.836%.

For holders, the move repriced duration. Long end exposure lost value as term premium rose to clear supply, while Treasury liquidity support read as small against issuance. Higher long yields compress equity multiples and raise the discount on future cash flows, which tightens conditions without a policy move. For issuers funding AI related capital spending at the long end, the cost of duration rose at the point of heaviest need. For households, pass through to mortgage borrowing tightened housing and consumer credit, with global long yields rising in the same week.

Risk is that a hawkish hold or hike on Sept 16 validates the move, with funds at 3.50% to 3.75% into the Sept 15 to 16 FOMC and hike odds from 72% pre CPI to about 86% to nearly 90% after the print. A steady hold plus softer oil could pull yields lower, which explains why 4.992% did not print a 5% close. Into Nov 4, watch the policy path, labor and inflation prints, oil with Brent at $109.97 weekly high and Sept 11 settles of WTI $100.05 and Brent $104.61, and the refunding where Treasury revisits buybacks raised from $2B to at least $4B per operation.