The Japanese yen has staged one of its more convincing recoveries in recent memory, climbing roughly 3.3% against the US dollar over five trading sessions in early September 2026. The currency reached ¥152.89 to ¥154 per dollar, territory it had not visited since February.
The intervention backdrop
From July 30 to August 26, Japan’s Ministry of Finance executed what became a record ¥15.4 trillion, roughly $99.6 billion, in yen-buying intervention. The US Treasury stepped in alongside Japan with an estimated $5 to $10 billion of its own, marking an unusually direct form of bilateral currency coordination.
Japanese Finance Minister Satsuki Katayama has been explicit about the relationship with US Treasury Secretary Scott Bessent, describing ongoing coordination as a feature of the current arrangement rather than an emergency measure.
On September 7 and 8, the yen rose as much as 1.4% intraday. No fresh intervention was announced, which is itself informative: the recent leg of strength appears to be market-driven, not manufactured by official buying.
What is actually moving the yen
The Bank of Japan is widely anticipated to raise interest rates at its September 22 meeting. Analysts have also pointed to capital repatriation by Japanese institutional investors and the unwinding of yen-funded carry trades, with traders who had been betting against the yen being forced to cover their positions.
What comes next
The September 22 BoJ meeting is now the single most watched event on the calendar for anyone with yen exposure. A rate hike would validate the current rally and potentially extend it. A hold, or worse, a dovish signal, would expose how much of the recent strength was built on expectation rather than reality.
For Japanese exporters, a stronger yen is not exactly a celebration. Companies like Toyota and Sony generate significant revenue abroad, and when that revenue converts back into a more expensive yen, the numbers shrink.