
A New Wave of Selling Hits the Global Bond Market
On August 26th, international bond markets experienced another wave of volatility. From the U.S. to Europe and Asia, long-term government bond yields in multiple countries rose rapidly, continuing the downward trend sparked earlier this year by inflationary surges and concerns over fiscal deficits. Market participants generally believe this round of selling is driven not only by economic pressures but also by political unrest and challenges to central bank independence.
In the United States, President Trump's announcement of the dismissal of Federal Reserve Governor Cook has raised investor concerns about the future vulnerability of monetary policy to political interference, directly pushing the 30-year U.S. Treasury yield up to 4.9%. At the same time, France, due to the Prime Minister's push for a budget vote of confidence, faced a bond sell-off, leading to a noticeable rise in borrowing costs. The UK's 30-year government bond yield is nearing its highest point in nearly thirty years, and in Japan, long-term bond yields continue to climb due to heavy debt and interest rate hike expectations.
United States: Increased Risk of Policy Intervention
The U.S. bond market’s movements have drawn significant attention. On Tuesday, the yield spread between 5-year and 30-year U.S. Treasuries widened to 117 basis points, marking the largest single-day increase since 2021. This "steepening" reflects short-term rates being suppressed by rate cut expectations, while long-term rates are pressured higher by fiscal deficit and inflation concerns.
Investment institutions have pointed out that if Trump's nominee for the new governor is inclined to support low-rate policies, it might boost easing expectations in the short term but could also exacerbate inflation in the medium to long term. This uncertainty has become a key reason for the cautious allocation of U.S. Treasuries by long-term funds.
Europe: Highlighted Fiscal Pressures
The yield on France's 10-year government bonds has recently risen to the highest level in the Eurozone, surpassing even Greece and Portugal, which were previously seen as riskier. With budget cuts and tax hikes encountering political resistance, investor confidence in France's public finances is under pressure.
In the UK, the rising trend of long-term government bond yields is even more pronounced. Over the past 12 months, the 30-year UK bond rate has increased by about 110 basis points, outpacing the 80 basis points rise in U.S. Treasuries during the same period. The market generally anticipates that the UK Treasury may be forced to balance the budget through tax increases, objectively further driving up expectations for long-term rates.
Japan and Australia: The Resonance of Deficits and Monetary Policy
Japanese government bonds are similarly under pressure. With market expectations that the Bank of Japan might raise interest rates again, the 10-year bond yield has climbed to its highest point since 2008. The massive debt burden also raises concerns about fiscal sustainability, and if rate hikes materialize, borrowing costs may continue to rise.
Australia and New Zealand, on the other hand, exhibit different characteristics. Both countries' central banks signal rate cuts, keeping short-term bond yields stable. However, government fiscal deficits leading to an expanded issuance of long-term government bonds impose significant upward pressure on long-term bond yields, making the steepening curve one of the most pronounced among developed economies. The Reserve Bank of New Zealand unexpectedly turned dovish after a rate cut, increasing market risk aversion towards long-term bond sell-offs.
The Next Move for Investors
The simultaneous weakening of global bond markets highlights the interwoven core risks: inflation expectations, deteriorating fiscal deficits, challenges to central bank independence, and confidence fluctuations brought on by political turmoil. Under this scenario, the steepening of the yield curve has become a global trend.
Analysts believe that if the fiscal deficits of major economies remain unchecked and political risks continue to ferment, the upward trend in long-term rates will be difficult to reverse. For investors, finding a balance between short-term easing and long-term inflation expectations will be the core task of future allocations.






