Japan's Ministry of Finance spent 11.7349 trillion yen on currency interventions to support the yen between April 30 and May 27, 2024 [1].

This massive operation marks the largest one-month period of yen-buying in the nation's history [1]. The move highlights the Japanese government's desperation to stabilize the currency as it hit critical psychological thresholds, impacting the cost of imports and domestic inflation.

The intervention consisted of buying yen and selling U.S. dollars [1]. According to the Ministry of Finance, the action was taken as the yen weakened to approximately 160.70 yen per dollar on April 30, 2024 [3]. The government aimed to curb the rapid depreciation that had pushed the currency to these levels [3].

Despite the scale of the operation, the intervention failed to permanently reverse the downward trend. By May 29, the exchange rate remained weak at approximately 159 yen per dollar [1]. This suggests that market forces and interest rate differentials may be outweighing the Ministry's efforts to prop up the currency.

There are conflicting reports regarding the timing and existence of these operations. While TBS News Dig reported the 11.7 trillion yen figure [1], Livedoor News cited a Ministry of Finance announcement stating that no interventions occurred during the period from April 29 to May 28 [4]. However, the primary government data cited by the Ministry of Finance confirms the massive scale of the yen-buying activity [1].

Jun Mimura, the Financial Diplomat, noted the timing of these market fluctuations in early May [2]. The Ministry of Finance said the interventions were necessary to address the volatility in the foreign exchange market [1].

11.7349 trillion yen of yen-buying and dollar-selling interventions were carried out.

The record-breaking scale of this intervention indicates that the Japanese government views the current level of yen depreciation as a systemic risk. However, the fact that the currency remained near 159 yen per dollar despite trillions in spending suggests that the market is prioritizing the wide interest rate gap between the U.S. and Japan over government intervention. This may force the Bank of Japan to consider more aggressive monetary policy shifts if currency interventions alone cannot stabilize the exchange rate.