Japanese yen at 40-year low while US rates stay high — ride the Japanese stock rally
The Japanese yen has crashed to its weakest level in 40 years, making Japanese exports incredibly cheap and boosting profits for Japanese companies. At the same time, the US Federal Reserve is signaling it will keep interest rates high to fight inflation, which is part of why the dollar is so strong and the yen is so weak.
Idea
The yen hitting a 40-year low is a massive tailwind for Japanese exporters — their products become dramatically cheaper for the rest of the world to buy, and their overseas profits are worth far more when converted back into yen. Bloomberg notes that Japanese stocks are already set to climb on this dynamic. The driver is the contrast between a Fed under Chairman Warsh that investors are underestimating in its determination to fight inflation, and a Bank of Japan that is letting its currency slide. As long as US rates stay high and Japan stays dovish, the weak yen supercharges Japanese corporate earnings.
Advanced Analysis — institutional-depth research report
Verdict: one close away from live, but the rules have never fired — wait
The macro thesis is clean and current — per Bloomberg's June 29, 2026 coverage, the yen has hit a four-decade low, supercharging Japanese exporter earnings, and EWJ's trend structure agrees: the 50-day average ($94.43) sits above the 200-day ($89.16), ADX is at 20.2 against the 20 threshold, and the last close of $96.43 is just 1.5 cents above the 20-day Donchian top of $96.42. The strongest point against is harder data: across 1,235 evaluated daily bars over the last 60 months the full entry rule set never triggered once, and the author-requested parameter search ran out of time with zero candidate setups tested, so no robust configuration was established. The supporting structure is not empty, though — a 5% stop and 10% target from the trigger level implies roughly 2:1 reward-to-risk, with sizing capped at 25% of the book. EWJ's issuer fundamentals snapshot is still pending, so the earnings-translation claim rests on the macro narrative rather than filed revenue or margin series, and the ownership record is thin (five holders reporting about 851,000 shares for the June 30, 2026 period, past the filing deadline). Verdict: wait — this is one confirmed daily close above $96.42 away from being actionable, but it is not actionable yet.
Trade now: EWJ is one tick from arming — don't front-run it
EWJ closed at $96.43, sitting just 1.5 cents above its 20-day Donchian channel top of $96.42 — the price condition for this long setup is effectively at the trigger line, but the rules require a clean daily close crossing above it, so it is rated near rather than confirmed. The other two conditions are already satisfied: ADX (14) is at 20.2 versus the 20 threshold, and the 50-day moving average ($94.43) sits above the 200-day ($89.16). In practice, the whole setup hinges on one more decisive up-close in EWJ. If the breakout confirms near the current level, the risk math is fixed by the strategy: a 5% stop from roughly $96.4 puts invalidation near $91.6, while the 10% take-profit sits near $106.1. That is 2:1 reward-to-risk, with position size capped at 25% of the book and roughly 2.8% of equity risked per trade under the fixed-risk sizing. EWJ's own history argues for respecting the stop — its maximum drawdown over the last two years was about 16%. What "wait" means concretely: do nothing until EWJ prints a daily close above $96.42 (the threshold will drift up as new highs form). Two of three entry conditions are live; chasing before the close risks buying a false pop that the rule would filter out. If EWJ instead falls back toward support at $96.00 and then $94.30, the setup resets rather than dies — a fresh breakout above the renewed channel top re-arms it. EWY is a secondary route but not close: its ADX is 9.4 versus the required 20, so the exporter-heavy fund needs a meaningful trend-strength pick-up before its version of this entry can fire. This is a watch-list setup whose entry conditions have not yet opened a trade — the plan is to let the rules do the work.
A Macro Tailwind With a Momentum Trigger Waiting Behind It
The bull case here starts with the macro driver, and it is unusually clean. Per Bloomberg's June 29, 2026 coverage, the yen has hit a four-decade low, and in the same wrap Bloomberg reported Japanese stocks set to climb on exactly the dynamic the idea argues: a weak yen makes Japanese exports cheaper abroad and inflates the yen value of overseas earnings. The idea attributes the currency split to a Fed investors may be underestimating in its inflation fight — Citadel Securities' public warning of a 'shifting landscape' under the Warsh Fed (Bloomberg, June 29, 2026) — versus a Bank of Japan letting the currency slide. If that policy gap holds, the earnings tailwind for Japanese corporates holds with it. Importantly, this is a rules-based idea, not a pure narrative bet. The entry requires a close above the 20-day Donchian channel on EWJ's daily bars, trend strength (ADX above 20), and the 50-day average above the 200-day average — a structure that only buys…
Scores
- Conviction score breakdown: 58
- Thesis support: 75
- Trade readiness: 35
- Risk quality: 60
- Trigger proximity: 80
- Fundamentals trend: 40
Watch items
- EWJ — Close vs Donchian (20) upper
- EWJ — ADX (14)
- EWJ — SMA (50) vs SMA (200)
- EWJ — Close vs nearest support
- EWY — ADX (14)
- EWJ — Dividend ex-date