# Tokyo's Recurring Yen Defense

While the US-Japan rate gap persists, Tokyo will keep selling dollar reserves to defend the yen, each time with diminishing effect unless policy rates converge, and US participation will make coordinated currency management a recurring feature rather than an exception.

- Conviction: 38 / 100 (weakening)
- Horizon: Emerging (watchlist)
- Tracking since: 2026-11-13T00:00:00.000Z
- Last updated: 2026-11-14T14:08:09.551Z
- Canonical: https://polylog.news/trends/yen-intervention-cycle
- Publisher: Polylog

## Recent score history

- 2026-11-13: 40
- 2026-11-14: 38

## Recent evidence

- [confirms] Yen Weakens Past 160 per Dollar, and Japan's Finance Minister Warns of Action (2026-11-13): The yen fell as low as 160.03 per dollar, its weakest since early September, and Japan's finance minister warned of action. This follows 15.4 trillion yen of summer intervention that the US Treasury joined. The currency has round-tripped to the defense line within months, the diminishing-effect pattern the thesis predicts while the rate gap widens on Fed hike bets.