USD/JPY Plunges from 158 as Yen Surges on Another Suspected Intervention

While we’re yet to receive official confirmation of intervention from Japan’s Ministry of Finance (MOF), the price action strongly suggests it occurred, once again. A series of verbal warnings from officials, a rising USD/JPY, and increasingly bearish yen positioning in futures markets set the stage—while thin holiday liquidity provided the ideal conditions for a sharp reversal.

USD/JPY is now down around 200 pips (-1.3%) after its three-day rally stalled just shy of 158. I flagged that resistance zone in this morning’s report, and moves like this make you wonder whether the MOF pays attention to technical levels—because it played out almost perfectly.

USD/JPY Falls from 158 as Yen Surges on Suspected MOF Intervention
Yen Intervention Signals Potential USD/JPY Top
It is worth noting that yen intervention has historically aligned with meaningful tops in USD/JPY, often lasting weeks to months. The 2022 peak saw USD/JPY fall -16.3%, while the 2024 top delivered a -13.8% decline. Even the smallest move of -5.1% exceeds the current pullback of around -3.3% from the cycle high.

With Europe and the US yet to fully react—and the US dollar already under pressure following the latest ‘peace deal’ headlines—it may take time before USD/JPY makes another attempt at 158.