Japanese Bonds Sound Alarm After Senate Election Defeat, Analysts Warn of Possible "Triple Threat"

TradingKey - Following a setback for Japan's ruling coalition in the Senate elections, Liberal Democratic Party leader Shigeru Ishiba faces pressure from within his party to step down. Japan's simultaneous political and economic challenges have led to an increase in yields on 20- to 40-year Japanese bonds on Tuesday.

Katsutoshi Inadome, a senior strategist at Sumitomo Mitsui Trust, indicated that the election results have intensified market concerns about fiscal expansion, suggesting that Japanese bonds could be subjected to ongoing selling pressure. This is particularly true for ultra-long-term bonds, whose sale might steepen the yield curve in a bearish manner.

The rationale is that Ishiba, if he remains in office, might make fiscal concessions to appease opposition parties and voters, pursuing expansionary policies that could heighten investor concerns over fiscal spending, thereby causing bond yields to rise rapidly.

Beyond policy factors, Bloomberg strategist Mark Cranfield noted that the auction of 40-year government bonds on Wednesday will also influence Japanese bond prices.

Furthermore, some analysts foresee a more severe scenario. Dilin Wu, a research strategist at Pepperstone Group Ltd., told the media that the possibility remains for a "triple threat" scenario where the yen, bonds, and stocks all decline simultaneously. She believes that, at least in the short term, a lack of transparency in fiscal and economic policies might diminish the global appeal of Japanese assets. Additionally, political uncertainties could complicate US-Japan tariff negotiations, impacting market confidence.

Since July, yields on ultra-long-term Japanese government bonds have risen sharply, with 40-year bonds increasing by about 29 basis points and 30-year bonds up approximately 18 basis points, reflecting the market's growing concerns over fiscal conditions.