Japan Executes Record $34 Billion FX Intervention to Shore Up the Yen

According to BlockBeats, Japan's Finance Minister Katsunobu Kato said on Aug. 3 that the government stepped into the foreign-exchange market last Friday. Market estimates indicate authorities may have spent about ¥5.33 trillion (roughly $34 billion) buying yen, potentially marking the largest single-month FX intervention on record. Bloomberg, citing Bank of Japan account data and market projections, put last Friday's intervention at around ¥5.33 trillion. If confirmed, Japan's recent cumulative intervention—including earlier operations—would exceed the prior record of ¥11.73 trillion. Separately, authorities were previously estimated to have deployed about ¥8.45 trillion to support the yen last Thursday, which could be the biggest single-day FX intervention in Japan's history. The moves followed a sharp depreciation that pushed the dollar/yen rate to 164, its highest level since 1986. Japan bought yen to counter speculative short positioning and to dampen excessive exchange-rate swings. The U.S. Treasury has also been involved in efforts to support the yen, viewed as the closest U.S.-Japan policy coordination in 15 years. Treasury Secretary Bessent said the U.S. is not ruling out further market intervention, a stance President Trump has endorsed. Investors expect Japanese authorities could still take additional steps. Traders are also watching for the possibility of a Bank of Japan rate hike in September and for Japan's Ministry of Finance to publish its quarterly FX intervention report this Friday, which will detail daily operations from April to June.