Japanese Finance Minister Satsuki Katayama warned that Tokyo can step into the foreign‑exchange market if sharp swings or speculative moves emerge.

The remark came before data that could confirm the Bank of Japan intervened during the previous month. Katayama’s tone signals readiness to act on sudden volatility, a move that could calm markets or trigger tighter monetary policy.

Market participants eye the statement for clues on the Bank of Japan’s future stance. A swift intervention could dampen the yen’s decline, affecting exporters and debt holders reliant on stable currency levels.

The ministry’s stance underscores Japan’s commitment to maintaining orderly markets, a factor that investors and corporates will monitor closely as trade flows and capital movements respond.