Overview
- Tokyo and Washington executed a rare coordinated yen‑buying operation that included large Japanese purchases and a smaller U.S. role, with the joint action occurring on July 31 and the move meant to steady markets.
- Japan spent roughly $80–88 billion over two days to buy yen while the U.S. reportedly contributed about $5–$10 billion and sold euros through the New York Fed to help execute trades.
- The intervention briefly pushed USD/JPY from about 163 to the mid‑150s, but the yen has since retraced most gains and was trading near ¥158–159 by August 11, exposing the short‑lived nature of the rally.
- Officials and analysts say the U.S. motive was to prevent Japan from dumping Treasuries and causing U.S. yield spikes, yet critics warn U.S. tools such as the Exchange Stabilization Fund and expanded use of the Fed’s FIMA repo have clear limits.
- What to watch next: whether the Bank of Japan tightens policy to make gains stick, if Tokyo or Washington intervenes again if the yen nears ¥160, and how a weak yen will keep import costs and household bills higher in Japan.