- Simultaneous rout across markets. On September 1, government bond yields rose sharply across the UK, US, Germany, France, and Japan, with UK gilts leading the move — the 30-year reached 5.89%, levels not seen since May 1998.
- Japan breaks a 30-year ceiling. Japan’s 10-year yield briefly touched 3%, crossing a threshold that had not been breached since 1996 and signalling that the Bank of Japan’s long-running yield curve policy has been overtaken by global inflation dynamics.
- Equities under pressure. The Nasdaq fell 1.03% and the S&P 500 dropped 0.42% as rising yields compressed multiples in interest-rate-sensitive growth stocks, with technology and industrials leading sector declines.
When British gilts began selling off sharply at the London open on Tuesday, it triggered a cascade that by mid-session in New York had spread across every major sovereign bond market. The move extended a global trend that had been building since mid-August: investors reassessing the terminal rate for central banks in an environment where oil prices are elevated, Middle East disruptions are ongoing, and disinflation has stalled.
The Gilt Lead
UK gilts bore the brunt of Tuesday’s move, according to Bloomberg’s market data. The 10-year gilt yield climbed as much as 11 basis points to 5.25%, while the 30-year hit 5.89% — its highest closing level since May 1998. Analysts attributed the severity of the UK move partly to a calendar-effect: UK markets had been closed the previous day for a bank holiday, leaving traders to catch up with a week’s worth of global macro developments in a single session.
UK government borrowing costs at these levels are material: the British Office for Budget Responsibility has previously flagged that each 100-basis-point rise in gilt yields adds roughly £10 billion to annual debt-servicing costs within a decade. The move will put pressure on Chancellor Rachel Reeves ahead of the autumn budget statement, limiting her room to ease the fiscal rules she set earlier in the parliament.
The US and Japan
In the US, the 10-year Treasury yield rose to 4.77%, while the 30-year approached 5.26% — a level Bloomberg described as a multi-decade high for duration. According to The Motley Fool’s real-time market coverage, 30-year US bonds have not sustained yields this high for this long since 2006, with the overhang of geopolitical-driven inflation expectations — particularly from a Strait of Hormuz disruption — now feeding directly into long-end pricing.
Japan’s crossing of the 3% threshold on its 10-year benchmark was the day’s most symbolic moment. The Bank of Japan has spent decades defending ultra-low yields as a cornerstone of its monetary policy architecture. The crossing of 3% — even briefly — underscores how difficult it has become for any central bank to insulate its domestic bond market from the global repricing underway.
Rate-Hike Expectations and Equities
Markets are now pricing approximately 65% probability of a hold at the Federal Reserve’s September 16 FOMC meeting, but the bond market’s behaviour suggests that even a hold will not stop long-end yields from rising if fiscal concerns and energy price inflation persist. Rate-hike bets doubled after Fed Chair Kevin Warsh’s hawkish Jackson Hole debut in August, and nothing in Tuesday’s data — including the ISM Manufacturing prices index holding at 71.1% — gave bond bulls reason to reverse that position.
The equity reaction was measured but notable: the Nasdaq’s 1% decline reflected multiple compression in growth stocks, where discounted cash flow valuations are most sensitive to the long end of the curve. Apple shares gained on news that John Ternus had formally taken over as CEO, but sector-level weakness in technology dragged the index lower overall.