The U.S. 10-year Treasury yield has broken through the 5% mark, upward pressure on long-term rates has yet to fade, and changes in the buyer structure of U.S. Treasuries are making the market more prone to sharp swings.
Inflation remains above target, the U.S. economy remains resilient, the Federal Reserve has shifted back toward tightening, and the U.S. government's fiscal financing needs continue to expand, all of which are pushing long-term Treasury yields higher. At the same time, price-insensitive foreign official investors are gradually withdrawing, while price-sensitive investors such as hedge funds are absorbing more Treasuries, meaning the market may become more sensitive to shifts in capital flows.
On Wednesday, the U.S. 10-year Treasury yield rose 14 basis points in a single day, briefly breaking above 5.1% intraday to hit its highest level since 2007; the 5-year Treasury yield also broke through 5%, likewise reaching its highest level since 2007. Japan's 10-year government bond yield rose on Thursday to its highest level since 1996, with global bond markets coming under synchronized pressure.
Inflation Has Not Receded, Economy Still Resilient
This round of yield increases is first supported by fundamentals. The U.S. July PCE price index rose 3.7% year-over-year, still significantly above the Federal Reserve's 2% target. Rising oil prices have added uncertainty to the disinflation path, and if energy prices remain elevated, they could further prolong the time needed for inflation to cool.
At the same time, the U.S. economy has not shown clear signs of stalling. The job market remains stable, consumption is still supported, and the investment boom driven by AI data center construction is also boosting corporate capital expenditure.
Economic resilience means the Federal Reserve has no urgent reason to pivot quickly toward easing. The Fed recently raised its policy rate by 25 basis points to a range of 3.75% to 4%. Federal Reserve Governor Michael Barr said that with inflation still above target and economic growth strong, further policy adjustments may still be necessary; Chicago Fed President Austan Goolsbee said the process of returning inflation to 2% will not be smooth sailing.
As a result, long-end yields are facing triple pressure from inflation, growth, and monetary policy, not just a short-term oil price shock.
Treasury Buyers Becoming More "Fragile," Market Volatility Risk Rising
The supply side is also putting pressure on the Treasury market. The U.S. fiscal deficit is large, and continued financing means the market needs to absorb a substantial volume of newly issued government debt; at the same time, large technology companies are increasing debt financing for AI infrastructure investment, further driving up demand for long-term capital.
Even more noteworthy is the changing structure of buyers. Research from the New York Fed shows that participation by price-insensitive foreign official investors has declined, while the role of hedge funds and private investors has increased.
Compared with the former, market-oriented investors such as hedge funds pay more attention to yields, prices, and financing conditions. When yields are sufficiently high, such capital can absorb newly issued Treasuries; but if the market adjusts rapidly, their positions may also shift accordingly, making bond demand more elastic.
This means that with new supply continuing to increase and stable buyers declining, the Treasury market may need to attract capital through higher yields. Once yields rise rapidly, falling bond prices could also trigger stop-losses, margin pressure, and other forced position reductions, further amplifying market volatility.
Therefore, what is worth watching now is not whether hedge funds will exit, but rather that as the Treasury market's reliance on price-sensitive capital increases, the impact of supply and demand changes on yields may be further magnified.
After 5%, What Else Does the Market Need to Watch?
A 5% 10-year Treasury yield is not the highest level in history, but it is already enough to make the market reassess the long-term neutral rate.
A previous Bloomberg survey of market participants showed that more than half of respondents expected the U.S. 30-year Treasury yield could reach 6% by year-end. This does not mean 6% will necessarily be reached, but it reflects growing market concerns that long-term rates will continue to rise.
At the same time, a 5% yield also increases the appeal of Treasuries to long-term capital. Compared with the low-rate environment after the financial crisis, U.S. Treasuries can now offer higher nominal returns, and some capital may therefore reallocate toward fixed-income assets.
Therefore, the key going forward is not just inflation and the Federal Reserve, but also the scale of U.S. fiscal financing and whether the market can continue to absorb newly issued Treasuries. If stable buyers continue to decline while the share of price-sensitive capital rises further, Treasury yields may react even more sharply to market shocks.
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