The Yen Reversal: What Happened and What Comes Next
The yen finally pushed back, and it pushed hard.
USD/JPY crashed from Monday’s open at 163.79 to a Friday low of 155.26, settling the week at 157.58 — an 830-pip collapse that ranks among the sharpest yen rallies in years. The carry trade, rebuilt so confidently through mid-July, has been gutted for the second time in three months.
What actually happened
The honest answer combines three forces. First, positioning: yen shorts were at record extremes, and the pair had stalled at a politically charged level — the perfect setup for a squeeze. Second, the trigger: heavy selling erupted during Monday’s Tokyo session with characteristics consistent with official action — speed, size, and zero accompanying news. Tokyo hasn’t confirmed or denied, which is itself informative. Third, amplification: once 162 broke, option barriers and margin calls took over, and the decline fed on itself.
The cross-market transmission
EUR/JPY collapsed from 187.3 to 181.9 — an enormous move in a normally placid cross. AUD/JPY and the EM crosses fared worse. Notably, the dollar held up fine elsewhere: EUR/USD actually rose to 1.1544. This was a yen event, not a dollar event, which matters for how you position the aftermath.
What comes next
The 2022 and 2024 templates say: intervention-era yen rallies last weeks to months, not years, unless the BoJ changes policy. The market will now watch the BoJ’s next meeting with singular focus. A hawkish shift makes 150 a real target; another hold makes 160+ a matter of time.
The carry trade isn’t dead — the rate gap that feeds it still exists. But it’s wounded, and wounded carry trades demand smaller positions and wider respect. Both apply here.
Disclaimer: This is market commentary, not investment advice. Trading FX, commodities, equities and crypto carries substantial risk of loss.
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