USD/JPY Interventions Lose Steam as Market Tests Defended Levels

The recent joint U.S.-Japan intervention has failed to sustain its impact on the yen's value, as the USD/JPY pair has given back more than half of its gains. The pair currently hovers around 159.25, a level that reflects a loss of over four yen since the intervention on July 30-31.

The U.S. Treasury and Bank of Japan coordinated to purchase $8.45 trillion in yen, bringing the pair down from near 164.00 to 155.00. However, this move has been short-lived, with the market now putting the effectiveness of the intervention to the test through concrete price action.

The release of U.S. CPI data on Wednesday will be a key catalyst for the market's next move. If core inflation exceeds expectations, bets on a September rate hike could reignite, widening the yield spread and subjecting the intervention to even tougher scrutiny.