Japan long bond yields hit records as global debt selloff pressures JGBs

Long-dated Japanese government bonds fell May 14, 2026, pushing the 30-year yield up as much as 10 basis points to 3.915%, the highest since the tenor was introduced in 1999, as rising global yields outweighed solid auction demand. The 20-year and 40-year JGB yields also climbed to multi-decade highs, rising 8 basis points and 7.5 basis points, respectively. The move followed higher U.S. Treasury yields after inflation data increased expectations for Federal Reserve rate hikes, while volatility in long-dated U.K. gilts added pressure across major bond markets. Bank of Japan board member Kazuyuki Masu called for rate increases as soon as possible if the economy remains stable, citing persistent inflation risks tied to the Iran conflict. Japan’s 30-year auction drew a bid-to-cover ratio of 3.49, above the 12-month average of 3.37, but the tail widened to 0.22 from 0.18, signaling weaker pricing. The yen’s renewed decline also added to inflation concerns.