TOKYOPreliminary money market data released by the Bank of Japan suggests that on Friday, July 31, 2026, Japan spent approximately $31.8 billion buying yen. This intervention was part of a two-country effort that included U.S. authorities trading euros for yen.

Around 6 p.m. on July 31 in Japan, the yen surged to the 158 range against the U.S. dollar, improving from about 160 earlier that day. The intervention followed a second day of yen purchases, aiming to stabilize the currency amid recent volatility.

The Bank of Japan has not confirmed the exact amount spent, but preliminary figures indicate a significant market operation involving both Japan and the United States.

Sources