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U.S. 10-year yields rise 112 bps as Wall Street warns debt can’t keep climbing

Bond markets are flashing a warning as France and the U.S. see 10-year yields rise sharply over the year. Some on Wall Street argue a crisis could force change before debt pressures turn into something worse.

MCBy Margaret CoyleCorrespondent, Markets & Finance
October 6, 2026, 7:34 AM ET

The bond market is sending a louder message than stocks. In Fortune's market roundup, the yield on the 10-year U.S. Treasury fell to 5.27% at the time of writing, but it is still up 112 basis points this year, according to Ed Yardeni and Toby Hearst at Yardeni Research.

France has it worse. Its 10-year yield is up 131 basis points this year, and the country now ranks above the U.S. in bond-market stress. Fortune noted that both countries' bonds have performed worse than those of Italy or Greece, a rare break from the usual hierarchy in sovereign debt.

The numbers come first. Six of the 22 bond markets on Yardeni's list have seen 10-year yields climb 100 basis points or more this year. France leads, followed by the U.S., with Italy, Indonesia, Japan, and South Korea rounding out the group.

The pressure reflects a simple market problem: governments keep leaning on debt, and investors are demanding more compensation for that risk. Fortune said the Macron government has repeatedly tried to get its debt under control but has met political opposition at every step. That is why traders have been selling French bonds.

In the same roundup, AllianceBernstein's Inigo Fraser Jenkins said such a crisis is 'probably the sole route to engender change and avoid worse intergenerational tension later.' He added that politicians might 'balk and stop yields from rising by fiat,' which could trigger inflation and currency implications.

There is a reason bond markets matter more than the political class likes to admit. Capital rewards clear rules, and when governments pile up obligations without discipline, the taxpayer eventually inherits the bill in weaker currency, higher rates, or both.

Stocks may be acting as if nothing is happening, but the market has already voted in fixed income. If borrowing costs keep moving higher, Washington and other capitals will have less room to pretend debt is free. That is not a bond-market problem alone. It is a warning about what happens when public spending outruns restraint.

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