Japanese government bond (JGB) yields rose significantly on Friday, September 11, with the benchmark 10-year JGB yield climbing 6 basis points to 2.970%. This surge was influenced by a broader global debt market sell-off, primarily triggered by an overnight 6% jump in oil prices, which pushed Brent crude to $109 a barrel. The increase in oil prices amplified inflation risks, leading investors to anticipate more aggressive policy tightening from central banks worldwide.
The global bond market trend was set by sharp increases in U.S. Treasury yields, which were driven by stronger-than-expected producer price data and the rising oil prices. These factors strengthened expectations that the Federal Reserve would raise interest rates in the upcoming week. Takayuki Miyajima, a senior economist at Sony Financial Group, noted that high crude oil prices and a weakening U.S. Treasury market would likely act as selling catalysts, intensifying upward pressure on interest rates in the Japanese domestic bond market.
Adding to the pressure, data released on Friday indicated that Japan's wholesale inflation remained elevated in August. This persistent inflation further solidified the case for the Bank of Japan to hike its own interest rates. Other JGB yields also saw notable increases: the 40-year yield rose 3.5 basis points to 4.110%, the 20-year yield advanced 5.5 basis points to 3.805%, and the 30-year yield added 4.5 basis points to 4.050%. At the shorter end, the two-year yield, most sensitive to BOJ policy rates, gained 1 basis point to 1.830%, while the five-year yield rose 3 basis points to 2.250%.
This broad increase in yields across the JGB curve highlights investor concern about future monetary policy ahead of upcoming meetings by both the Bank of Japan and the Federal Reserve. The global repricing of bonds, including those in the UK and US which are near 5%, signifies a global tightening of capital, impacting corporate growth and consumer spending. The current oil shock, attributed to OPEC production disruptions, refinery pressures, and Middle East escalation, is a key driver feeding into the higher rates story globally.
