Japan’s 10‑year government bond yield leapt 10 basis points to 3.075% on Thursday, the steepest climb since 1996 and the largest move in two decades. The jump pushed the 5‑year yield up 9.5 basis points to 2.37%, mirroring a global swing in fixed‑income markets.
U.S. Treasury yields, already at their highest in nearly 20 years, added fuel to the sell‑off. Robust American economic data and a tepid debt‑auction demand pushed the 10‑year Treasury to 4.17%, while the 2‑year stayed near 4.60%. Rising oil prices – up 6% in the last week – stoked inflation fears, reinforcing expectations of further Fed rate hikes.
The Bank of Japan nudged its benchmark rate up on Friday, signalling a possible tightening path, but traders were left uneasy by the lack of a clear pace for future moves. Katsutoshi Inadome, senior strategist at Sumitomo Mitsui Trust Asset Management, warned that the BOJ risks lagging the inflation curve if it delays a 50‑basis‑point shift. Fiscal pressure is also mounting; the government is reportedly eyeing a 3.5% of GDP mid‑term defence spending target, sparking debate over Prime Minister Sanae Takaichi’s funding plans.
Market watchers will keep a close eye on the BOJ’s upcoming policy meeting in early October, where analysts anticipate a potential rate hike. Meanwhile, the Treasury market will likely remain volatile as investors weigh the twin forces of domestic tightening and global economic data. The next earnings season for major financials could also provide clues about the trajectory of interest rates.