The yield on the 10-year US government bond has surpassed 5 percent, a level not reached since 2007, prompting debate over whether this marks a buying opportunity or a sign of further increases to come. Several perspectives have emerged around the implications of this milestone and the potential trajectory of bond yields.

One view suggests that the US economy remains sufficiently robust to handle significantly higher interest rates without the cost of debt dampening economic activity. This argument hinges on the idea that the “neutral” interest rate—the rate that neither stimulates nor restrains growth—has risen since the Covid-19 pandemic, driven in part by anticipated productivity gains from advances in artificial intelligence (AI). However, for such a neutral rate to support yields above 5 percent, productivity improvements would need to be substantial, arguably at the optimistic end of forecasts, and would have to offset the challenge posed by a stagnant US workforce.

Signs are emerging that the higher interest rates are already affecting the economy. The US housing market has slowed considerably, with fewer buyers willing to commit to mortgages at around 7 percent for 30 years. Moreover, rising bond yields are impacting the AI sector, a critical driver of recent economic growth. Leading technology firms—sometimes described as "hyperscalers"—face increased borrowing costs, constraining their ability to maintain capital expenditure at previous levels. With diminishing free cash flow and less capacity to issue debt, expansion in this sector could slow.

A second argument points to increased risk premiums on bonds due to concerns over US fiscal policy. The country’s budget deficit is hovering near 6 percent, an unusually high figure during a period of economic strength. Additional fiscal pressures are expected from geopolitical developments, notably the ongoing conflict in Iran, and proposed direct payments to households linked to the potential outcome of upcoming midterm elections. Such fiscal measures may prompt investors to demand higher compensation for inflation risks stemming from perceived “bad policy.”

This situation highlights the delicate relationship between the US Treasury and the Federal Reserve. While fiscal expansion risks inflationary pressure, the Federal Reserve under Chair Kevin Warsh has demonstrated a commitment to maintaining price stability, as evidenced by a unanimous interest rate hike vote ahead of the midterms. This stance suggests the Fed will counteract any inflationary impulses from government spending, potentially limiting further increases in bond yields.

A third perspective challenges the notion that bonds have lost their diversification appeal for investors. Though inflationary periods can cause both stock and bond prices to fall simultaneously, bonds remain an important hedge against risks, particularly a possible correction in the technology sector. AI-related companies now constitute about half of both the S&P 500 and emerging market benchmarks. Should these firms reduce capital expenditures due to rising costs and heightened competition, the market could price in a recession and anticipate Federal Reserve rate cuts. This scenario would enhance the value of government bonds, which would likely see price gains as yields decline.

Given these considerations, some strategists argue that the recent sell-off in US bonds may have reached its limit, with the 5 percent yield acting as a sort of ceiling. While debate continues over whether yields could climb to 6 percent or beyond, the consensus is that sustainable increases above 5 percent appear unlikely without significant shifts in economic fundamentals.