The world's largest sovereign bond markets are experiencing their most challenging month in years. This downturn is attributed to surging energy costs, which are driving inflation, and the economic boost provided by the artificial intelligence (AI) boom. These factors are leading investors to anticipate a prolonged period of higher interest rates. Two-year US Treasury yields have notably climbed by almost 60 basis points (bps) in September, putting them on track for their most significant monthly increase since early 2023.
The broader US Treasury market, a substantial $1.2 trillion daily trading market, is reflecting a variety of concerns. These include persistent inflation, geopolitical conflicts, budget deficits, and demographic shifts. The interest rate on the 10-year Treasury, a key benchmark for mortgages and other loans, has risen by over 0.5 percentage points since May. The 30-year Treasury yield recently hit a two-decade high, while the 10-year rate reached 5.25%, a 19-year high, and briefly topped 5.27% before settling at 5.23%. The 30-year yield also rose to 5.55%.
Treasury Secretary Scott Bessent has attempted to mitigate these rising rates through bond buybacks, an effort that has faced criticism from economists and financiers and has not yet shown significant success. The pressure on the bond market is coming from multiple directions, with Brent crude oil prices approaching $106 per barrel, contributing to inflationary pressures, and higher real yields increasing the cost of money. Strong economic growth further complicates the Federal Reserve's dovish policy options. UBS strategists, while noting a historical trend of the Fed avoiding rate hikes in October before November elections, suggest that any delayed tightening would likely be pushed to later months, rather than disappearing entirely. However, the current elevated borrowing costs are already impacting US equities, with the S&P 500 falling 0.8%, the Dow Jones Industrial Average dropping 0.7% (347 points), and the Nasdaq composite sinking 0.9%.
