Japanese Yen Sinks to 162.27, Weakest Since 1986, as Rate Gap Fuels Carry Trade Pressure

On June 30, the Japanese yen fell to 162.27 per dollar, marking its weakest level against the greenback since 1986. The slide reflects a persistent interest-rate gap: the Bank of Japan holds its policy rate at 0.75%, while the U.S. Federal Reserve's target stands at 3.50% to 3.75%. This spread incentivizes investors to borrow cheaply in yen and invest in higher-yielding dollar assets, steadily pressuring the currency.

Japan spent a record 11.73 trillion yen (approximately $72.4 billion) defending the yen between late April and late May, only to see it weaken further. Finance Minister Satsuki Katayama signaled Tokyo's readiness to intervene again, stating the government was prepared to take appropriate action against excessive currency moves. However, traders remain skeptical about intervention's effectiveness given the structural nature of the rate gap.