UK 30-Year Gilt Yield Hits 26-Year High as Global Bond Sell-Off Deepens

The yield on the United Kingdom's 30-year government bond climbed to 6% on Tuesday, a level not seen since February 1998, as a relentless global sell-off in sovereign debt extended into the new month. The move highlights deepening investor concerns over persistent inflation, restrictive central bank policy, and swelling government debt issuance across major economies.

Global Bond Rout Intensifies

September was a grueling month for fixed-income markets, with a synchronized liquidation in longer-dated government bonds sending benchmark yields to multi-decade highs. The sell-off is fueled by a combination of factors, including persistent energy price shocks that have pushed Brent crude past $106 a barrel and aggressive policy tightening by central banks like the Federal Reserve and the European Central Bank.

As sovereign yields serve as a foundational benchmark for global finance, their rapid ascent increases borrowing costs for corporations and consumers alike, pressuring equity valuations and the broader economy. Investors are demanding significantly higher term premia to absorb the new supply of government debt.

Fiscal Pressures Mount in Europe

In the UK, the spike in 30-year yields follows a recent syndication of new 10-year bonds that were priced to pay the highest yields for that maturity since 1999. The government faces ongoing spending pressures from state pensions, social programs, and calls for increased defense expenditures.

Meanwhile, France is preparing to address its own fiscal challenges. Prime Minister Sébastien Lecornu is set to unveil a draft budget targeting significant fiscal consolidation amid a worsening outlook.

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• Targeted spending cuts: €54 billion
• Projected budget deficit: 5.4% of GDP this year
• Public debt: Approaching a record 120% of GDP

The deteriorating fiscal picture has made French sovereign debt (OATs) a notable underperformer. The yield spread between 10-year French bonds and benchmark German Bunds has widened to multi-year highs, signaling that investors are demanding a greater risk premium to hold French debt.

U.S. Yields Resume Climb

Across the Atlantic, long-dated U.S. Treasury yields also resumed their upward march. The benchmark U.S. 10-year Treasury yield rose to 5.358%, trading near its highest level since July 2007. The move came after only a brief period of relief following a softer-than-expected report on Personal Consumption Expenditures (PCE) inflation.

The rally in bonds proved short-lived as persistent energy costs continue to anchor inflation expectations. According to market data, money markets are now pricing in a 63% probability that the Federal Reserve will raise interest rates again at its upcoming policy meeting.