Yen gains sharply, dollar eases from two-week high

On September 2, the Japanese yen experienced a sharp gain against the U.S. dollar, reversing much of the increases that followed a joint intervention by the U.S. and Japan in July. The yen, which reached a 40-year low of 163.98 per dollar before the intervention, rebounded to as high as 155.21 per dollar before easing some of the gains. As of the latest data, the yen was trading at 158.92 per dollar, marking a 0.79% increase.

The significant movement in the yen has sparked speculation about whether the change was triggered by an intervention from either the U.S. or Japan, or simply a rate check conducted by the Bank of Japan. Chris Scicluna, head of economic research at Daiwa Capital Markets Europe, suggested that the yen's rally could be a rate check rather than an intervention to shift the trend, as the previous intervention did not achieve this goal.

Bank of Japan governor Kazuo Ueda indicated a high probability of an interest rate hike this month, while U.S. Treasury Secretary Scott Bessent expressed support for decisive monetary measures to address the yen's weakness during a meeting with Ueda. Analysts noted that while certain factors support the possibility of intervention, the size of the move was relatively modest and may not indicate a direct intervention.