U.S. Treasury Yields Surge, Markets Recall Pre-Financial Crisis Era! Wall Street Fears This Sell-Off Isn't Over

Global bond markets are continuing to face sell-offs, pushing up borrowing costs for governments, corporations, and households. With long-term U.S. government bond yields rising to multi-year highs, Wall Street is growing increasingly concerned that this bond market downturn may not yet be over.

The reasons behind this bond sell-off are complex, including unresolved U.S.-Iran tensions fueling inflation concerns, massive corporate bond issuance by tech firms competing for capital, and widening fiscal deficits around the world. Additionally, the lack of clarity on the policy direction of the new Federal Reserve Chair, Walsh, has made investors more cautious.

Market participants remain divided on which factor triggered this bond market sell-off, but there is growing consensus that these issues will not disappear in the short term.

Some market observers also believe that the global economy is showing stronger resilience than expected. Even with interest rates at levels previously thought sufficient to significantly dampen economic growth, the economy has not noticeably cooled. This suggests that the 'ultra-low interest rate era' formed after the 2008–2009 financial crisis may be gradually coming to an end.

Robert Tipp, Global Head of Fixed Income and Chief Investment Strategist at PGIM Credit, said that from a certain perspective, the current situation represents a form of 'normalization.'

After the financial crisis, major global economies remained in a low-interest-rate environment for an extended period, with long-term bond yields staying relatively low. But now, investors are increasingly worried that interest rates may remain high or even rise further, making them more cautious about holding long-term bonds.

Recently, major government bond yields have risen to multi-year highs. The yield on the U.S. 30-year Treasury bond briefly surpassed 5.3%, the highest level since 2007. The 10-year Treasury yield also approached its highest level since early 2025, reflecting rising financing costs across the economy.

Currently, this pressure is concentrated in the bond market. Stock markets remain near all-time highs, and corporate earnings remain strong, indicating that higher interest expenses have not yet significantly constrained economic growth. However, if yields continue to rise, the impact will extend beyond Wall Street.

According to The Wall Street Journal: Bond markets have suffered heavy losses, and Wall Street expects the sell-off to persist in the short term.

As old government bonds mature and are replaced with new ones, the U.S. government must pay higher interest rates on its growing debt. Even before this year’s sharp rise in yields, the U.S. government’s interest payments as a share of the federal budget had been steadily increasing. Now, for every $100 in government revenue, nearly $20 must be used to pay interest.

The Congressional Budget Office (CBO) estimates that over the past 50 years, federal government interest costs averaged 2.1% of GDP. This year, it is projected to rise to 3.3%, and by 2036, it could reach 4.6%. However, this forecast may be overly optimistic.

The CBO’s earlier forecast this year assumed a 10-year Treasury yield of 4.1%, but current yields are around 4.7%, clearly above that baseline. If 10-year yields remain elevated, future government borrowing costs could rise further.

The size of U.S. government debt held by the public is now equivalent to about 100% of GDP, approaching the historical highs seen after World War II. This massive debt burden makes U.S. fiscal policy more sensitive to interest rate changes.

According to CBO estimates, if all interest rates were 0.1 percentage points higher than previously projected, U.S. net interest spending would increase by $379 billion.

Michael Strain, Director of Economic Policy Studies at the American Enterprise Institute (AEI), pointed out that the real concern isn’t just rising interest rates, but fiscal deficits. 'If you can only focus on one thing, it should be the deficit outlook over the next 10 years.'

U.S. Treasury Yields Affect Mortgages and Politics

U.S. Treasury yields don’t just affect government financing costs—they ripple through financial markets to impact the broader economy, including 30-year mortgage rates. This gives bond market movements political significance.

Former U.S. President Donald Trump was largely elected due to voter concerns about affordability and repeatedly promised to lower mortgage rates.

U.S. Treasury Secretary Bessent has also stated that during the early part of Trump’s second term, the government will seek to lower the 10-year Treasury yield, one method being to reduce the fiscal deficit, thereby decreasing the supply of U.S. Treasuries in the market.

However, these efforts have yet to yield clear results. Polls show voter dissatisfaction with the economy remains high, further increasing political pressure on Republicans ahead of midterm elections.

In recent weeks, Bessent has taken several measures analysts believe are related to curbing further rises in Treasury yields, including intervening in currency markets to support the Japanese yen. This action could reduce pressure on the Japanese government to sell U.S. Treasuries to support the yen. Yet, U.S. Treasury yields continue to rise, highlighting the limited scope of government policy interventions in influencing markets.

Zach Griffiths, Head of Investment-Grade Bonds and Macro Strategy at CreditSights, said, 'If the Treasury Secretary’s current actions fall short of expectations, that could be another reason for the market to believe this yield rise may continue.'

Stock Markets Can Withstand for Now, But Challenges Lie Ahead

After U.S. Treasury yields rose further, U.S. stocks saw a sharp correction on Tuesday. The Philadelphia Semiconductor Index posted its largest drop since July 1, falling about 19% from its record closing high on June 22.

Nonetheless, despite recent volatility, major U.S. stock indices have maintained double-digit gains this year.

Keith Lerner, Chief Investment Officer at Truist Advisory Services, noted that the market has been able to overlook rising yields mainly because corporations are in a period of earnings growth. But as the earnings season ends, market focus may gradually shift back to yields.