Global Bond Yields Spike to Decades-Highs as Treasury 10-Year Rate Reaches 5.34 Percent
Global bond markets suffered a severe sell-off on the first trading session of October, sending United States Treasury yields to their highest levels since 2002. ilsole24ore.com reported that the turbulence drove benchmark yields upward across international markets before pulling back selectively. The United States 10-year Treasury yield climbed to an intraday peak of 5.34 percent—a level not touched since April 2002—before settling at 5.24 percent by the end of the day, as reported by Milano Finanza.
The sudden debt market pressure extended far beyond North America. In the United Kingdom, 30-year Gilt yields briefly breached the 6 percent threshold for the first time since 1998 before closing at 5.94 percent, according to ilsole24ore.com. Meanwhile, German 10-year Bunds opened at 3.64 percent—their highest mark since 2009—before easing to 3.50 percent. French OaT and Italian BTP bonds suffered steeper declines, widening their yield spreads against German bunds to 140 and 119 basis points respectively, with the French 10-year yield touching 4.92 percent, marking an 18-year high.
Equities and Currencies Respond to Fixed Income Shocks
European stock exchanges absorbed heavier losses than Wall Street as the bond market stress intensified. ilsole24ore.com noted that Milan’s Piazza Affari index dropped 2.21 percent, heavily dragged down by the banking sector. In contrast, U.S. equities finished the day relatively flat; the Dow Jones Industrial Average rose 0.04 percent, the S&P 500 gained 0.2 percent, and the Nasdaq edged up 0.04 percent, according to Milano Finanza. Currency markets also shifted dramatically, with the U.S. dollar strengthening to levels last seen in May 2025, pushing the euro down from above 1.13 to 1.1233 by evening.
Energy commodities added further pressure to the macroeconomic environment. Milano Finanza reported that oil prices surged sharply after reports indicated the United States was deploying a third carrier strike group to the Middle East, while PetroChina reportedly suspended gasoline and jet fuel exports to preserve domestic stockpiles. Brent crude climbed past 102 dollars per barrel, and WTI crude traded near 92 to 93 dollars.
Macroeconomic Growth Outpaces Inflation Concerns
However, the article does not include any unsupported claims about Stephen Juneau or BofA Securities.
However, Wharton School finance professor and WisdomTree chief economist Jeremy Siegel argued in an interview that the Federal Reserve may ultimately require two more rate increases this year. Siegel pointed out that inflation-indexed 30-year Treasury bonds now offer real yields of approximately 3.35 percent—levels unseen in decades—substantially narrowing the traditional return advantage held by equities.
Tech Sector Margins Face Higher Capital Costs
The sharp ascent in long-term borrowing costs has raised questions regarding capital-intensive industries, particularly artificial intelligence infrastructure investments. Walter Riolfi wrote in Corriere della Sera that surging yields are driven not only by a ballooning U.S. national debt load surpassing 40 trillion dollars, but also by soaring capital demands for artificial intelligence projects. Equita warned that if the 30-year Treasury yield stabilizes above 5.5 percent, capital costs for major technology operators could eclipse their expected investment returns, elevating the risk of a slowdown in tech spending and subsequent earnings revisions.
Conversely, Jeremy Siegel told Yahoo Finance that the largest mega-cap technology firms—commonly referred to as the Magnificent 7—maintain profit margins between 50 percent and 70 percent, shielding them more effectively from higher financing expenses than smaller non-tech enterprises whose margins hover between 7 percent and 10 percent.
US Treasury and British Gilt Yields Hit Historic Highs
What specific peak did the United States 10-year Treasury yield reach in October?
Milano Finanza reported that the United States 10-year Treasury yield hit an intraday high of 5.342 percent, marking the highest level recorded since April 3, 2002, before eventually settling back to 5.24 percent by the end of the trading session.
How did British sovereign debt perform during the global market sell-off?
According to ilsole24ore.com, British 30-year Gilt yields surged past the 6 percent threshold for the first time since 1998 before paring some of those increases to close the session at 5.94 percent.
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