USD/JPY Plunges After Touching 161.90, Intervention Risk Rises

USD/JPY made a sharp move lower on Monday after briefly touching a session high above 161.90, reigniting speculation that Japanese authorities may step in to support the yen. The pair plunged to 161.20 within minutes before recovering to around 161.65, highlighting the market's sensitivity to intervention risk near multi-decade highs.

The move came after USD/JPY posted its highest weekly close in 40 years on Friday, with the pair trading just shy of the July 2024 intraday high at 161.99. Japanese officials have repeatedly warned that they are watching currency markets closely, and the latest price action suggests traders are testing the Ministry of Finance's resolve. The dip was quickly bought, however, indicating that underlying dollar demand remains strong amid divergent monetary policy expectations between the Federal Reserve and the Bank of Japan.

For foreign exchange traders, the key question is whether the BOJ will intervene directly or rely on verbal warnings to cap yen weakness. The 162 level is widely seen as a potential trigger for intervention, given that previous action occurred near 160 in 2024. A break above 162 could accelerate dollar-yen gains, while a failure to hold recent highs may signal exhaustion. Traders should monitor NowPrice's fx page for real-time USD/JPY quotes and intervention-related volatility. This week, focus will be on any comments from Japanese officials and US economic data that could influence rate differentials.