Analysis:How a US-Japan pact to hit yen speculators came together

A joint U.S.-Japanese effort to combat speculative bets against the yen came together last week, following months of preparation and a rare public alignment of interests in Washington and Tokyo over exchange rates. While Japan's weak currency has caused import price inflation and cost-of-living issues for Prime Minister Sanae Takaichi, a weak yen also harms U.S. trade advantages and could affect U.S. Treasury yields.

A month prior, the New York Federal Reserve conducted rare rate checks to aid Tokyo in handling the yen's decline. Japanese Finance Minister Satsuki Katayama confirmed 10 meetings focused on exchange rates, both in person and online, with U.S. Treasury Secretary Scott Bessent. The May talks followed Japan's large-scale yen-buying intervention, which failed to reverse the currency's downtrend.

The U.S. Treasury acknowledged Japan's strong fundamentals but emphasized the need for faster Bank of Japan interest rate hikes. Japan's currency intervention campaign was coordinated with the Bank of Japan, ultimately leading to an intervention on July 30 that strengthened the yen to 157.80 per dollar, despite it subsequently sliding back towards 158.