US 30-year Treasury yields have been trading above 5% for the longest continuous stretch since 2007, a development that is raising alarm among investors. This sustained high yield reflects growing concerns that accelerating inflation will compel central bankers, particularly the Federal Reserve, to further raise interest rates. The current environment is a significant shift from earlier in the year when yields saw substantial volatility.
Several factors are contributing to this upward pressure on yields. A major driver is the surge in oil prices, which has sparked inflation risk. For instance, on Tuesday, the 10-year Treasury yield hit 4.64%, its highest since late May, amid continued US-Iran exchanges. This rise in oil prices fuels expectations of persistent inflationary pressures, leading investors to demand higher returns on government debt.
The 30-year yield rose as much as seven basis points to 5.20% on Tuesday, a level last seen in 2007, just before the global financial crisis. This selloff extended beyond the US, impacting bond markets across Europe and Japan, and spilling over into US equity markets. The market is also experiencing increased supply of bonds, which further contributes to the demand for higher returns from investors. An auction of 30-year Treasury bonds on a recent Thursday, for example, was poised to draw the highest yield since at least 2006, with bonds trading near 5.07% Thursday morning, underscoring this trend.
Historically, the 30-year Treasury yield closed at 5.06% on a recent Friday, remaining at the high end of its range since its reintroduction in 2006. This is significantly higher than the 1.0% seen in March 2020 which marked the bottom in yields. The current yield implies that the bond market anticipates an average CPI inflation of about 2.15% to equate the returns of regular 30-year Treasury bonds with 30-year TIPS (Treasury Inflation-Protected Securities). If inflation averages higher, say 3.5%, TIPS buyers would achieve a combined yield of 6.41%, while regular bond buyers would remain at 5.06%, highlighting the bond market's sensitivity to inflation expectations.
