The bond selloff has pushed the benchmark 10-year Treasury yield to 4.97%, just shy of the 5% mark, a level not closed above since 2007. This increase is causing significant concern from Wall Street to Washington due to the escalating borrowing costs for the US economy. The recent surge in oil prices, threatening a new inflation shock, and the Trump administration's unsuccessful attempts to stabilize the government debt market have contributed to this climb. The yield briefly surpassed 5% in October 2023 during a single trading session before buyers intervened.

Several factors are driving the upward trend in bond yields. The war in Iran, initiated by President Donald Trump in late February, has disrupted the supply of Middle Eastern oil and gas, contributing to global yield increases. Domestically, the artificial-intelligence boom is generating both increased debt and economic stimulus, while concerns over the federal government's expanding deficit, which hit $2 trillion in the first 11 months of the fiscal year, also play a role. Adding to these concerns, President Trump recently proposed spending over $1 trillion by distributing $5,000 checks to every American adult if Republicans maintain control of Congress, a proposal that his economic adviser confirmed as "serious."

The rising yields are vexing the Trump administration as they translate into higher costs for mortgages and other loans ahead of the mid-term elections. Trump had previously threatened to cut off US trade with some countries if the Federal Reserve did not reduce interest rates. Treasury Secretary Scott Bessent attempted to curb the rise in bond yields through debt buybacks, but his efforts were largely ineffective. The market did stabilize briefly on Friday following stronger-than-expected consumer price data, leading to speculation that the Federal Reserve will raise interest rates to combat inflation that has exceeded its target for half a decade.

Analysts anticipate further increases, with Tracy Chen, a portfolio manager at Brandywine Global Asset Management, stating that yields are heading higher in the medium-term, potentially beyond 5%, partly due to factors like the inflationary impact of the Iran war being beyond policymakers' control. Ian Lyngen of BMO Capital Markets expects 10-year yields to breach 5% "in very short order." Grace Peters, global head of investment strategy at JPMorgan Chase Private Bank, noted the psychological impact of 5% on equity markets, suggesting it could lead to "indigestion" and potentially draw investors away from stocks towards higher-paying bonds.