Japanese bond yields hit 20-year high as 'sleeping giant' replaces gold; foreign investors pour in record funds

Japan's bond market is experiencing a significant revival after decades of dormancy, with yields on Japanese government bonds (JGBs) soaring to their highest levels in 20 years. This surge is attributed to the Bank of Japan's shift towards policy normalization and market apprehension regarding the spending initiatives of newly appointed Prime Minister Sanae Takaichi. The 10-year JGB yield recently hit 2.901%, a high not seen since 1996, while the 20-year yield climbed to 3.901%.

This rise in yields has triggered a notable shift in global capital flows. Foreign investors are increasingly returning to the Japanese market, particularly drawn to 20- and 30-year government bonds as yields surpassed 3.5%. Inflows into long-term JGBs reached a record 9.3 trillion yen (approximately $1.86 trillion NTD) last year alone. Concurrently, Japanese investors are repatriating funds, having sold $29.6 billion (approximately $947.2 billion NTD) of U.S. Treasuries in the first quarter of 2026. This trend signals the end of Japan's long-standing role as a global provider of cheap credit, impacting the U.S. Treasury market.

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For global investors, Japanese government bonds are increasingly transitioning from 'uninvestable' to 'investable,' meaning investors can finally profit from holding Japanese bonds again.

Analysts hold differing views on the sustainability of this JGB rally. State Street Global Advisors notes that Japanese government bonds are transitioning from "uninvestable" to "investable" for global investors, offering potential for profit. Charles Gave, co-founder of Gavekal, enthusiastically recommends Japanese long-term bonds as the world's most attractive asset, even suggesting a 50% stock-50% bond portfolio focused on Japan as a replacement for Euro, US bonds, and gold. He predicts falling yields and a strengthening yen, particularly if oil prices remain stable.

However, concerns linger. DWS points out that European assets offer greater debt sustainability, with the European Central Bank's interest rate at 2.25% compared to Japan's 1%, and Japan's debt-to-GDP ratio exceeding 200%, far above the EU's 81.7%. Mattioli Woods investment manager Lauren Hyslop warns of immediate risks if the 30-year yield drops below 4.5%, potentially forcing life insurance companies to sell holdings. Conversely, the massive $1.8 trillion fund of the Government Pension Investment Fund (GPIF) could provide significant stability if it increases its allocation to domestic bonds. Uncertainties such as emerging fiscal pressures, the Bank of Japan's pace of rate hikes falling short of expectations, and geopolitical tensions in the Middle East also cast a shadow over the market.

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Soon, Japanese government bond yields will begin to fall, and the yen will begin to rise, especially if oil prices remain at current levels. Therefore, in the foreseeable future, Japanese long-term government bonds denominated in yen should significantly outperform gold.