US and Japan Coordinate Currency Intervention to Support Yen

The United States and Japan executed a coordinated currency intervention to support the yen, establishing an informal currency alliance that links foreign-exchange policy with national security and economic ties. To stabilize the currency, the U.S. sold dollars and euros to purchase yen.

Donald Trump described the joint action as a "signal of friendship." The intervention was managed by U.S. Treasury Secretary Scott Bessent through the Federal Reserve's Foreign and International Monetary Authorities facility, utilizing the Exchange Stabilization Fund. Japan's Vice Finance Minister for International Affairs, Atsushi Mimura, characterized the move as the culmination of the U.S.-Japan currency alliance.

The coordination aims to prevent prolonged yen weakness and may serve as a warning to Japanese Prime Minister Sanae Takaichi to moderate her reflationary policies. Additionally, the move supports a $550 billion Japanese investment program in the U.S. Market participants are now awaiting further policy signals from the Jackson Hole symposium and upcoming G7 and G20 finance meetings in Asheville.