The bond selloff has pushed a key Treasury yield to nearly 5%, causing concern across Wall Street and Washington about rising borrowing costs impacting the U.S. economy. The benchmark 10-year yield reached 4.97% last week, just under its October 2023 peak of over 5%. This increase is attributed to surging oil prices, threatening a new inflation shock, and the Trump administration's unsuccessful attempts to ease pressure on the government debt market. The Federal Reserve's potential rate hike this week is also a major factor, with markets pricing in a 76% chance of a quarter-point increase.

The recent bond market turmoil is heightened by sticky inflation and expectations of a Federal Reserve rate hike, with some investors warning that the bigger problem could be if the Fed holds rates steady, signaling a lack of commitment to its 2% inflation target. This could lead to investors demanding a larger term premium for longer-dated U.S. debt, especially as government borrowing needs continue to grow. JPMorgan Chase & Co. strategists see a rate hike as likely but are bearish on long-end Treasuries due to potential market reactions to the Fed's statements.

The rise in bond yields is also influenced by the inflationary effects of the Iran war, the artificial intelligence boom driving debt and economic stimulus, and concerns over the federal government's increasing deficit. President Trump's past threats to cut trade if the Fed didn't reduce interest rates and his administration's failed attempts to restrain bond yields have also contributed to market volatility. The federal deficit reached $2 trillion in the first 11 months of the fiscal year, and Trump's proposal to send $5,000 checks to every American adult further fuels spending concerns.

Experts believe that 10-year yields are likely to breach 5% soon, a level not closed above since 2007. While not inherently significant, this psychological threshold could trigger investor and policymaker decisions. Rising Treasury yields serve as a baseline for other loans and can negatively impact stock valuations by increasing the discount rate for future profits. Grace Peters, global head of investment strategy at JPMorgan Chase Private Bank, suggests that bond yields moving to the 5% or 5.25% range could cause "indigestion" in the equity market. Amundi SA, Europe's largest asset manager, is buying two-year U.S. Treasuries to hedge against a potential economic slowdown driven by high oil prices.