The Japanese Yen experienced a significant surge against the US dollar and other major currencies on Thursday, with the dollar falling by as much as 3% to ¥158.34, marking its biggest one-day fall since late 2022. This sharp movement has led analysts to widely believe that the Japanese Ministry of Finance (MOF) intervened in the market to strengthen the yen, although official confirmation was not immediately available. This suspected action follows similar intervention efforts in April and May, where Japanese authorities reportedly spent over $70 billion to support the currency.
The intervention comes as the yen had been trading near multi-decade lows against the dollar, driven by widening interest rate differentials between Japan and the US, elevated energy import costs, and a relatively slow-moving Bank of Japan (BOJ). Market participants had been on high alert for such action, as Japanese authorities have repeatedly warned about taking measures to counter currency weakness, which exacerbates the cost-of-living impact of rising import prices. The timing of the suspected intervention, just before the BOJ's interest rate decision on Friday, allowed Japanese authorities to capitalize on bearish momentum generated by weaker US economic data.
Economists anticipate the Bank of Japan will maintain its interest rates at 1% at its upcoming meeting. However, some reports suggest central bankers are considering a faster pace of rate hikes as Japan's economy grapples with inflation pressures. The yen's sharp appreciation today was not limited to the dollar, with the currency gaining over 2% against both the Euro and the British Pound. Analysts, such as Roberto Cobo Garcia, head of G10 FX strategy at BBVA, emphasized that intraday changes of almost 2% strongly indicate intervention.