The Japanese yen saw a significant surge against the U.S. dollar, with the dollar falling by as much as 3% to ¥158.34, its weakest since May 14. This sharp move led many analysts to suspect that Japanese authorities intervened in the currency market to prop up the yen, which had been trading at four-decade lows. The intervention, if confirmed, would follow prior efforts in April and May where authorities spent over $70 billion in dollar-selling interventions, though the yen had subsequently given back those gains.
Several factors created a favorable environment for potential intervention, including weaker-than-expected U.S. economic data and a broadly softer dollar following the Federal Reserve's decision to keep interest rates unchanged. Roberto Cobo Garcia, head of G10 FX strategy at BBVA, noted that Japanese authorities likely capitalized on the bearish momentum surrounding the dollar to support the yen. Japanese Finance Minister Satsuki Katayama had previously reiterated the government's willingness to act in the foreign exchange market to address the negative impact of a weak yen on import costs and household purchasing power, especially with soaring energy prices.
The U.S. dollar's weakness was not limited to the yen, as data showed U.S. inflation slowed in June, with the Personal Consumption Expenditures Price Index increasing 3.7% year-over-year. U.S. economic growth also slowed to a 1.5% annualized rate in the second quarter, below the forecasted 2.1%. This data, combined with the Federal Reserve leaving interest rates unchanged, led traders to increase expectations that the Fed will again hold rates in September, with the probability for a hold now at 34.8%. The euro gained 0.5% against the dollar, and the pound was up 0.8%.
While there was no immediate official confirmation from the Japanese finance ministry, the abruptness and magnitude of the yen's appreciation strongly indicated intervention. Tom Nakamura, head of fixed income and currencies at AGF Investments, and Yuji Saito, executive advisor at SBI FX Trade, both expressed the belief that intervention had likely occurred. Analysts are now closely watching to see if authorities will continue to push the dollar below the ¥155 mark, which would signal a more aggressive defense of the currency.
