After the Federal Reserve left rates unchanged at 3.75%, the US dollar slipped to a near four‑year low, dragging most Asian currencies into flat‑to‑low ranges. Investors reacted to the Fed’s upbeat outlook on the economy, while risk‑aversion surged amid stretched fiscal spending in developed markets.

Asian markets stayed muted as the Japanese yen hovered near a three‑month low after Prime Minister Sanae Takaichi warned against excessive volatility. Speculation grew that Washington and Tokyo might jointly intervene, keeping traders cautious. Meanwhile, the Australian dollar rose 0.4% to a near three‑year high on hotter‑than‑expected inflation data.

Other currencies moved little: the Singapore dollar held steady after its central bank left policy unchanged, the Chinese yuan steadied near its May 2023 low, and the Indian rupee slipped slightly after a record high above 92 rupees. Market watchers now focus on potential U.S. and Japanese intervention and the Fed’s future stance.

Investors should monitor the Fed’s next meeting for clues on tightening, as any shift could ripple through Asian markets. A joint yen intervention would signal a coordinated effort to curb volatility, potentially reshaping currency dynamics. Analysts warn that prolonged uncertainty could pressure Asian equities and dampen export‑driven growth.