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Japan Suspected of $36.6 Billion Currency Intervention, BOJ Data Suggests

Bank of Japan data released Monday suggests that Japanese authorities may have spent as much as $36.58 billion buying yen in a recent intervention to strengthen the currency. This action follows an official confirmation of coordinated efforts with the United States to pull the yen back from historic lows against the U.S. dollar.
What the Data Shows
The estimate is derived from the Bank of Japan's (BOJ) projection for money market conditions. The central bank's forecast points to a net fund outflow of 11.4 trillion yen, a figure significantly larger than the 5.66 trillion to 6.70 trillion yen outflow projected by market brokerages.
Market analysts typically interpret such a large, unexplained discrepancy as a proxy for the scale of a government's currency intervention. The difference of roughly 5.7 trillion yen, at an exchange rate of 156.90 yen per dollar, equates to the estimated intervention size.
Coordinated Action to Stem Yen's Decline
This suspected move comes after Japan's finance ministry confirmed on Monday that it had conducted coordinated yen-buying intervention with the U.S. and would not hesitate to take further action. Such bilateral interventions are rare and signal a heightened level of concern from policymakers over the yen's slide to 40-year lows.
AdThe latest action follows a sharp rise in the yen on Thursday and Friday of the previous week, which traders also suspected was due to intervention. BOJ data from Friday suggested that Japan may have sold as much as $58.97 billion to support its currency during that period.
Market Drivers and Implications
The primary driver of the yen's weakness has been the widening interest rate differential between Japan and the United States. The Bank of Japan held its policy rate at 1% on Monday, while the U.S. Federal Reserve has maintained a more hawkish stance, making the dollar more attractive to investors.
A persistently weak yen poses significant economic and political challenges for Japan. It drives up the cost of imports, stokes inflation, and reduces the spending power of households, creating pressure on Prime Minister Sanae Takaichi's administration.
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