Global bond yields hit highest since 2008 as oil and Fed fears mount

September 1, 2026 at 08:38 AM2 min

This digest was compiled by AI from multiple sources — links to the originals are below.

Global bond yields climbed to their highest level since mid-2008, with a Bloomberg gauge of government debt reaching 3.72% on Monday. The selloff extended into Asia on Tuesday, as Japan's 10-year yield hit 3% for the first time since 1996 and Australian yields surged to levels last seen in 2011. The moves came after Federal Reserve Chairman Kevin Warsh's Jackson Hole speech doubled down on taming inflation, while US-Iran hostilities raised oil supply concerns.

Key Facts

A Bloomberg gauge of global government debt rose for a fourth straight day on Monday to 3.72%, the highest since mid-2008.
The yield on 10-year Japanese government bonds climbed to 3% on Tuesday for the first time since 1996.
Federal Reserve Chairman Kevin Warsh's Jackson Hole speech on Friday doubled down on his vow to tame inflation that has outpaced the central bank's target for five straight years.
Fresh hostilities between the US and Iran have raised concerns about prolonged disruptions to energy flows through the Strait of Hormuz, sending oil prices higher.

Global Yield Surge

Bonds in Japan and Australia retreated on Tuesday, tracking a selloff in Treasuries that has driven the 10-year US yield to its highest since January last year. The yield on a Bloomberg gauge of global government debt advanced for a fourth straight day on Monday, rising to 3.72%, the highest since mid-2008. The yield on 10-year Japanese government bonds climbed to 3% for the first time since 1996 on Tuesday. That on similar-maturity Australian debt surged to levels last seen in 2011.

Fed Policy and Inflation

The latest catalyst driving yields higher has been Federal Reserve Chairman Kevin Warsh's speech at Jackson Hole on Friday, where he doubled down on his vow to finally tame inflation that's outpaced the central bank's target for five straight years. At the same time, fresh hostilities between the US and Iran have raised concerns about prolonged disruptions to energy flows through the Strait of Hormuz, sending oil prices higher. "Markets are pricing in a higher path for short rates in the US, but also globally," Idanna Appio, a portfolio manager and senior research analyst at First Eagle Investments said on Bloomberg TV. "Investors are beginning to reassess what neutral policy rates look like and there has been a gradual increase in those."

Investor Sentiment

Worries over elevated government spending in markets like Japan, the UK and the US have also prompted investors to seek greater compensation to own longer-maturity debt. "The bond market is not imploding, but it's sending a very clear memo that stickier inflation means higher for longer policy rates as the absolute minimum," said Prashant Newnaha, senior Asia-Pacific rates strategist at TD Securities in Singapore.