Yen gains sharply against US dollar

The Japanese yen experienced a significant gain against the US dollar on Wednesday, following a month-long retreat of roughly half the increase it saw after a joint intervention by the US and Japan at the end of July. The cause of this move remains unclear. The yen, which had hit a 40-year low of 163.98 per dollar before the intervention, climbed as high as 155.21 before easing some of the gains.

On Wednesday, the yen was trading at 158.72 per dollar, marking a 0.92% increase. Chris Scicluna, the head of economic research at Daiwa Capital Markets, noted that it is a "big chunky move" and suggested that it presents a good opportunity for either the US or Japan to conduct a rate check, especially after the Bank of Japan's latest comments.

Bank of Japan board member Hajime Takata expressed a hawkish stance on Tuesday, urging the central bank to swiftly raise interest rates in response to rising inflationary pressures, rather than following the market's expectation of a fixed semiannual pace. While it's challenging to pinpoint the exact reason behind the yen's move, Scicluna speculated that it is more likely a rate check rather than an intervention to alter the trend, as the previous intervention did not achieve that goal.

BOJ Governor Kazuo Ueda indicated on Tuesday that a hike this month is highly probable. U.S. Treasury Secretary Scott Bessent demonstrated strong backing for decisive monetary actions to address the yen's weakness during a meeting with Ueda on Tuesday.