The clear break above 158.00 in USD/JPY has seen fresh jawboning emerge from Japan officials, although net market impact remains minimal at this stage. Earlier FinMin Katayama stated concern around one-sided FX moves, which she shared with US Tsy Bessent in recent talks (who also agreed with the FinMins concern) . The Deputy Chief Cabinet Secretary Ozaki has reiterated concern this around one-sided, sharp FX moves and stated the government is ready to take steps to tackle excess volatility, including speculative moves. Broadly the market, for now at least, is taking these comments in its stride, and appears comfortable to continue to test the authorities resolve. We were last at fresh highs of 158.65/70. Below is a series of charts that we monitor, they arguably show intervention risks are heightened, but no more so than they were in late 2025.
Fig 1: USD/JPY - Various Metrics Compared To Prior Intervention Episodes

Source: Bloomberg Finance L.P./MNI
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