TLDR
- The 10-year Treasury yield briefly broke 5% for the first time since 2024 following August CPI data
- August CPI held at 3.4% year-on-year, with core monthly CPI beating forecasts at 0.3%
- Odds of a Fed rate hike at the September 15-16 meeting jumped to 88% after the CPI release
- Brent crude held near $109 a barrel after a nearly 13% weekly surge driven by Strait of Hormuz tensions
- A sustained move above 5% could raise mortgage rates, pressure equities, and tighten financial conditions
US 10-year Treasury yields crossed the 5% mark on Friday for the first time since 2024, after August inflation data came in hotter than expected and pushed traders to price in a near-certain Federal Reserve rate hike later this month.
🚨TODAY: U.S. 30-year Treasury yield SURGES past 5.4%, hitting its highest since 2004.
FOUR forces are fueling the pressure:
• Middle East tensions and rising oil prices are stoking inflation fears.
• Large government deficits are adding to bond supply.
• Heavy AI… pic.twitter.com/iSNGzJJfeQ
— Coin Bureau (@coinbureau) September 11, 2026
The yield surged from 4.942% to 5.005% immediately after the Labor Department released its Consumer Price Index report.
What the CPI Data Showed
August CPI held at 3.4% year-on-year. Core month-on-month CPI, which strips out food and energy, came in at 0.3%, above the 0.2% consensus forecast.
BREAKING: August CPI inflation comes in at 3.4%, in-line with expectations of 3.4%
Core CPI inflation falls to 2.4%, also in-line with expectations of 2.4%.
Month-over-month CPI inflation rose +0.4%, the biggest increase since May 2026.
Treasury yields are rising on the news.
— The Kobeissi Letter (@KobeissiLetter) September 11, 2026
That followed a Producer Price Index reading of 5.4% on Thursday, which was also above expectations. Rising energy prices are being passed through supply chains quickly.
Brent crude held near $109 a barrel, capping a weekly gain of almost 13%. Military strikes near the Strait of Hormuz and Houthi activity in the Red Sea have restricted oil exports from the region.
Fed Hike Odds and Market Reaction
Following the CPI release, futures markets put the odds of a 25-basis-point hike at the September 15-16 Federal Reserve meeting at 88%, up from 71% earlier in the session.
The European Central Bank raised rates by a quarter point to 2.50% on Thursday, adding to the broader tightening environment.
Two-year yields, which are more sensitive to near-term Fed decisions, rose to 4.61%. Thirty-year yields reached 5.338%, their highest level since 2007.
The bond selloff has spread globally. Australian benchmark yields hit their highest since 2011. Japanese yields are trading close to the 3% level.
“Hitting 5% on the 10-year Treasury yield looks more like an inevitability here than a forecast,” said Padhraic Garvey, head of research for the Americas at ING Groep.
What a 5% Yield Means
A 10-year yield above 5% raises the cost of borrowing across the economy. Mortgage rates, corporate refinancing costs, and consumer credit rates all move with Treasury yields.
It also compresses the equity risk premium, making bonds more attractive compared to stocks.
“While we aren’t convinced that 5% is that ‘magic’ number, higher Treasury yields would certainly pose a risk to the sustainability of the US’ public finances as well as threaten equities,” said John Higgins of Capital Economics.
For Treasury Secretary Scott Bessent, a sustained breach of 5% creates pressure ahead of midterm elections, with mortgage rates already at their highest level in over a year.
The Federal Reserve meeting on September 15-16 is now the central event markets are watching.
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