- The latest data from trading terminals shows that in April, overseas investors net sold 81.3 billion yen (approximately 512 million USD) of Japanese super-long-term government bonds with maturities over ten years. This marks the first net outflow of funds since December 2024, indicating that foreign investors have turned into net sellers of these assets for the first time in over a year.
- Driven by rising inflation expectations and concerns over fiscal expansion, Japan's benchmark 30-year government bond yield hit a historic high this week, setting a new record since the issuance of sovereign bonds of this maturity in 1999.
- As a supplement to market liquidity, Japanese domestic life and non-life insurance institutions recorded a net purchase of 327.2 billion yen in April. This is the first large-scale acquisition since July last year, indicating that local financial institutions are filling the demand gap left by the withdrawal of foreign capital.
Reconstruction of Long-End Yield Curve Pricing
The pricing center of the current Japanese sovereign bond market is undergoing a significant revaluation process. The 30-year government bond yield has reached a historic high since 1999, reflecting institutional investors' reassessment of long-term inflation persistence and increased fiscal supply. As the Bank of Japan (BOJ) gradually advances monetary policy normalization and reduces bond purchases, the long end of the yield curve has lost the absolute support of the central bank's balance sheet, and market forces are beginning to dominate the discovery mechanism of ultra-long-term interest rates. The sell-off of Japanese bonds with original maturities exceeding 10 years by overseas investors shows that international capital is demanding a higher term premium to compensate for potential future interest rate volatility risks.
The Game Between Fiscal Expansion and Monetary Normalization
Discrepancies at the macro policy level are becoming the core variable affecting bond market liquidity. Japan's Finance Minister, Satsuki Katayama, hinted that bond market dynamics must be considered when drafting a supplementary budget, highlighting the decision-makers' high alert to rising borrowing costs. Shinichiro Kadota, head of Japan FX and rates strategy at Barclays, pointed out that the current vulnerability of the bond market is fully exposed. While government fiscal spending continues to expand, the Bank of Japan's pace of exiting ultra-loose policies is relatively slow, exacerbating market concerns about debt sustainability due to internal friction in this policy cycle. The accumulation of selling pressure is a direct result of the market pricing this macro uncertainty.
Liquidity Gap in the Terminal Market and Local Absorption
The liquidity vacuum left by the withdrawal of foreign capital is currently being attempted to be filled by Japan's domestic financial system. In April, domestic life and non-life insurance companies turned into net buyers, with purchase volumes reaching 327.2 billion yen. For these institutions facing long-term liability matching pressures, the absolute level increase in the 30-year government bond yield provides a more attractive allocation window for their balance sheet management. However, whether the local institutions' absorption capacity is sufficient to offset the continued outflow of foreign capital in the long term remains highly uncertain. If inflation data rebounds beyond expectations, domestic capital may also face valuation adjustment pressures.
Marginal Changes in Forward Exchange Rates and Interest Rate Parity
The sharp rise in ultra-long-term government bond yields is having a subtle impact on the forward pricing of the yen exchange rate. Although the nominal Japan-U.S. interest rate differential has narrowed, the improvement in real interest rates is relatively limited due to the simultaneous rise in domestic inflation expectations in Japan. Overseas hedge funds often accompany the sale of Japanese bonds with complex cross-currency swap (CCS) operations, which to some extent exacerbates short-term volatility in the foreign exchange market. In the coming months, if the central bank fails to provide a clearer path for balance sheet reduction, the term spread in the Japanese bond market may face the risk of further widening.
