Key Takeaways
- 10-year Japanese government bond yields increased by 0.5 basis points.
- Escalating US-Iran tensions drove oil prices higher, fueling inflation concerns.
- More than 90% of Japanese households expect rising prices in the coming year.
Japanese government bond (JGB) yields rose on Thursday as a result of escalating US-Iran tensions. The benchmark 10-year JGB yield increased by 0.5 basis points to reach 2.690%, reflecting market concerns over potential inflationary pressures.
The tension between the United States and Iran intensified after new US strikes on Iranian military installations, leading to a fourth consecutive session of rising oil prices. This increase in energy costs has further fueled fears of supply disruptions in the Strait of Hormuz, which could exacerbate inflationary trends.
In response to these market dynamics, other JGB yields also showed upward movement. The 20-year yield climbed by 3 basis points to 3.565%, while the 30-year yield added 4.5 basis points to reach 3.800%. Similarly, the 40-year JGB yield rose by 6 basis points to 3.815%.
A Bank of Japan survey revealed that more than 90% of Japanese households anticipate price increases over the next year, marking a significant rise from three months earlier. This indicates broadening inflationary pressures and could strengthen arguments for further interest rate hikes by the central bank.
Japanese Prime Minister Sanae Takaichi stated on Wednesday that there is no direct link between her government’s draft economic blueprint and recent fluctuations in the JGB market. However, Keisuke Tsuruta, senior bond strategist at Mitsubishi UFJ Morgan Stanley Securities, noted that lingering concerns over fiscal expansion and increased JGB issuance are likely to keep market participants cautious.
In a related development, US Treasury yields declined overnight following data from the Producer Price Index for final demand, which showed a 0.3% drop last month, below economists' estimates. This suggests that while global tensions may be driving bond yields in Japan, other economic indicators are influencing US markets differently.
The rise in JGB yields reflects the complex interplay between geopolitical events and market expectations of inflation. As oil prices continue to fluctuate due to ongoing tensions, investors remain vigilant about potential impacts on both domestic and international economies.



