Japanese bond yields surge: A financial storm is quietly forming.

The most important figure in global finance today is the yield on Japan's 10-year government bonds at 1.71%, the highest since 2008. This development marks the end of a decades-long period during which Japan maintained interest rates near 0% and exported massive liquidity to the world. For 30 years, Japanese financial institutions have pumped trillions of USD into US, European, and emerging market bonds, quietly helping to keep borrowing costs low, asset valuations high, and allowing governments to easily fund their debt.

Now that trend is reversing. Rising yields, record stimulus spending, and high public debt are preventing Japan from maintaining its old policy. As interest rates rise, pension funds and Japanese investors incur losses from hedging and begin to repatriate capital—estimated to be over 1 trillion USD out of the US debt market.

The consequences are significant: American yields may rise sharply due to a lack of bridge, leading to increased mortgage rates and corporate refinancing costs. Highly leveraged companies face risks. A reversal of the carry trade on the yen could cause strong volatility in stocks, crypto, and emerging markets.

If Japan continues to tighten, the global market may have to reprice significantly.

Japanese 10-year government bond yield chart