Finance Ministry data reveals Japan’s largest yen-buying intervention totaled $39.64 billion on April 30 to counter weakness.
Japan intervened with a record 6.28 trillion yen ($39.64 billion) in a single day to prop up the yen during thin Golden Week liquidity in late April. The move surpassed the previous high of 5.92 trillion yen spent just a day earlier, marking the largest intervention since 1991.
Despite the aggressive action, the yen continued sliding to 40-year lows below 163 in July, highlighting that intervention alone could not offset broader dollar strength. Traders now watch for coordinated U.S.-Japan action, which may introduce two-way risks for yen positioning.
The data underscores that while intervention provides temporary relief, the yen’s trajectory remains tied to U.S.-Japan rate differentials and carry trade flows. Markets may price higher odds of further joint moves if weakness persists.