The Japanese yen experienced significant volatility against the US dollar as the USD/JPY currency pair repeatedly tested the 160 level, which acted as a psychological resistance point for traders wary of potential intervention by Japanese authorities [1]. The pair opened the week at 159.19 and slipped below 159 during Tokyo and European trading on 17 August, before rebounding as US economic data improved and oil prices rose, eventually reaching a high of 159.78 the following day [1].
Despite the upward momentum, USD/JPY struggled to break above 160 due to persistent concerns about possible intervention. The pair gradually retreated toward 159 during Tokyo trading on 19 August [1]. A key market-moving event occurred when the US Treasury announced plans to expand US Treasury (UST) buybacks starting in September, which triggered broad-based dollar selling and pushed USD/JPY to a low of 158.03 early in Tokyo trading on 20 August [1].
However, the yen's strength was short-lived as the pair avoided a break below 158 and rebounded with recovering UST yields, climbing back above 159 and erasing the previous day's decline. At the time of reporting on 21 August, USD/JPY remained top-heavy around the 159 level [1]. The yen also weakened against other major currencies, with EUR/JPY rising above 185 for the first time since 31 July [1].
Market participants are closely watching the upcoming Jackson Hole event for further cues on dollar direction, while intervention fears continue to cap USD/JPY gains near the 160 level [1].
CONCLUSION
The USD/JPY pair remains volatile, with intervention fears and US Treasury policy changes driving sharp moves. The 160 level serves as a key resistance point, and traders are focused on upcoming events and policy signals for further direction.