The yield on the 10-year U.S. Treasury note rose above 5.2% on Monday (September 28), its highest level since June 2007, as weak auction demand and expectations of tighter monetary policy from the Federal Reserve pushed up borrowing costs. The benchmark yield rose about 5 basis points on Monday, after jumping more than 10 basis points last Thursday, with the 30-year yield touching about 5.5%, its highest level since 2004.

Driven by real yields rather than inflation expectations, the two-year breakeven point remained virtually unchanged.

A senior U.S. economist stated that this rise was driven by real yields, not inflation expectations. The oil price rebound may not have helped, but the market's inflation expectations gauge—the two-year breakeven—was barely moved this week and remains well below its earlier highs. Instead, the market appears to be reacting to weak demand at Treasury auctions and accelerating signs of the U.S. economy, fueling expectations of a tighter policy path from the Federal Reserve. This distinction is important: if rising yields are driven by inflation expectations, the Fed may need to respond more aggressively; if driven by real yields, it reflects growth and fiscal factors.

The seven-year tender saw its weakest bid-to-cover ratio in a year, indicating a decline in investor willingness to absorb supply.

Economists pointed out that this week's seven-year auction saw its weakest bid-to-cover ratio in a year, with indirect demand also declining. Demand at Treasury auctions was similarly weak, with economists saying investors' willingness to absorb Treasury supply appears to be declining, especially as the likelihood of further tightening by the Federal Reserve rises. A rate hike in October is priced in at about 70%, and consecutive rate hikes in October and December are priced in at nearly 60%. This supply and demand dynamic suggests that even if inflation expectations remain stable, the combination of increased Treasury supply and weak demand could still push up yields.

Federal Reserve officials echoed this sentiment, with Cook stating that AI investments and oil prices are driving up inflation.

The Federal Reserve itself has also leaned in the same direction. Governor Cook stated on Monday that she expects AI investment and higher oil prices to continue pushing up inflation, and any further rate hikes will depend on upcoming data. The Fed has already begun raising rates this month. This statement echoes the market's pricing of a 70% probability, indicating internal support within the Fed for further tightening.

Opinions differ on how high yields can go: Morgan Asset Management sees 5%, ING sees 6%.

Opinions are divided on how high yields can go. Karen Ward of Morgan Asset Management predicts the 10-year yield is unlikely to rise significantly above 5%, while ING suggests yields could rise to 6% in the near future. A survey of 173 market experts found that slightly more than half of respondents expect the 30-year yield to exceed 6% this year. One market analyst points out that the 10-year yield is currently below the 5.25% technical resistance level, a region dating back to July 2007, and a break above this level could open the door to higher levels. The pressure isn't limited to the US; German 10-year bond yields hit their highest level since 2011, and UK bond yields have also risen.

Rising yields tightened financial conditions, with mortgage rates reaching 7.1%.

These yield levels have tightened financial conditions for mortgages, corporate debt, and stock valuations. Analysts say a sustained rise above 5.2% could support the dollar while weighing on gold and risk assets. The S&P 500 is still a few percentage points away from its record high, so further increases in real yields will test this resilience. Borrowing costs are already being felt, with the average 30-year U.S. mortgage rate at around 7.1%, the highest in over two years. Oil prices rebounded on Iranian headlines, but the message from the bond market is that supply and Federal Reserve policy, rather than energy, are now the dominant drivers.

Editor's Summary

U.S. Treasury yields rose to near two-decade highs, reflecting a combination of rising real yields, weak auction demand, and a shift in Federal Reserve policy expectations. Inflation expectations remained relatively stable, suggesting that current trends are more correlated with economic resilience and fiscal supply and demand. Tightening financial conditions have already translated into mortgage and corporate financing costs, putting pressure on bond markets in major global economies. Future developments will depend on economic data, Federal Reserve communications, and the evolution of the Treasury supply and demand balance; market pricing in policy paths and yield ceilings remains divergent.

Frequently Asked Questions

Q: Why did the yield on the 10-year US Treasury note rise above 5.2% and reach a new high since 2007? A: The main driving factor was the rise in real yields, rather than a significant increase in inflation expectations. Weak demand at Treasury auctions (especially the low bid-to-cover ratio for the 7-year note) indicated a decline in investors' willingness to absorb supply. At the same time, resilient US economic data strengthened market expectations for further interest rate hikes by the Federal Reserve. The combination of increased supply and slowing demand pushed up the overall yield level. Q: What is the difference between real yield-driven and inflation expectation-driven yields? What is the impact on policy? A: Rising real yields typically reflect improved economic growth prospects or fiscal imbalances, with the market focusing more on long-term real returns. Inflation expectation-driven yields directly point to price pressures and may prompt the Federal Reserve to raise interest rates more aggressively. Currently, the two-year breakeven inflation rate is almost unchanged, indicating that this rise is more driven by real factors. The Federal Reserve can respond more flexibly while observing data, rather than immediately tightening sharply. Q: What signals did the latest statements from Federal Reserve officials send? A: Governor Cook pointed out on Monday that AI investment and higher oil prices will continue to push up inflation in the coming months, and any further rate hikes depend on upcoming data. This echoes the market's pricing in a roughly 70% probability of a rate hike in October, showing support within the Fed for a tighter policy path, but emphasizing data dependence to avoid locking in the path too early. Q: What are the direct impacts of rising yields on ordinary households and businesses? A: The 30-year fixed mortgage rate has risen to about 7.5% (daily) or 7.03% (weekly), a more than two-year high, significantly increasing the cost of home purchases and refinancing. Rising long-term debt financing costs for businesses may dampen capital expenditures. Stock valuations will also be pressured by rising risk-free rates, and overall tightening financial conditions will suppress economic activity. Q: What are the differences of opinion in the market regarding how high yields can go? A: Institutions such as Morgan Asset Management believe that there is limited room for the 10-year yield to significantly exceed 5%, while ING expects it to approach 6%. Expert surveys show that more than half believe the 30-year yield may exceed 6% this year. Technical resistance is around 5.25%, and a break above this level could open up further upside potential, but ultimately it depends on the actions of the Federal Reserve, economic data, and global bond market sentiment.