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Japan Intervenes to Lift Yen, Signals Readiness to Act Again

Thin holiday trading plus a wide U.S.–Japan rate gap could fuel fresh, volatile swings.

U.S. dollar, Euro, Yen and Pound banknotes are seen in this illustration taken May 4, 2025. REUTERS/Dado Ruvic/Illustration
Banknotes of Japanese yen are seen in this illustration picture taken September 23, 2022. REUTERS/Florence Lo/Illustration
The Japanese national flag waves at the Bank of Japan building in Tokyo, Japan March 18, 2024. REUTERS/Kim Kyung-Hoon
A view inside the New York Stock Exchange (NYSE) on the day of Pershing Square Inc.'s IPO, in New York City, U.S., April 29.

Overview

  • The yen, which authorities lifted with yen-buying Thursday, jumped about 3% as dollar–yen fell from near 160 to roughly 155.5.
  • Japan’s top currency diplomat Atsushi Mimura declined to confirm the operation but said Tokyo is in extremely close contact with U.S. officials and stands ready to act during Golden Week.
  • Finance Minister Satsuki Katayama had warned that “decisive” action was near, and a sharp move on Friday fed talk of a second round of buying even as no fresh intervention was confirmed.
  • Officials also flagged possible steps in crude oil futures as high energy prices and a large U.S.–Japan interest-rate gap keep pressure on the currency and raise import costs for households and companies.
  • Past yen-buying in 2022 and 2024 delivered only brief relief, and analysts say a durable turn likely requires lower oil prices or a smaller rate gap rather than one-off market support.