US Treasury tells banks further yen intervention possible; yen surges

CurrenciesBanks told to prepare for potential operation to buy Japanese currencyJapan intervened in foreign-exchange markets on Thursday, buying yen and selling dollars. (Photo by Akira Kodaka)TAKESHI KAWANAMI, YOSHIKAZU IMAHORI and AKIRA YAMASHITAAugust 1, 2026 00:16 JSTUpdated on August 1, 2026 07:41 JSTWASHINGTON/NEW YORK/LONDON -- The U.S. Treasury Department has told currency market participants to prepare for a potential additional intervention following Thursday's action by Japanese authorities to support the yen, Nikkei has learned. The yen later surged to its highest level since mid-May.