Report published September 4, 2026
MUFG FX Weekly: Upside JPY Risks as USD/JPY Momentum Turns (September 2026)
MUFG · September 4, 2026
MUFG analyzes the sharp weekly surge in the Japanese yen driven by momentum shifts and short-covering across retail and institutional investors following hawkish BoJ commentary. The report recommends initiating a short EUR/JPY position and closing a long AUD/JPY trade while previewing upcoming ECB and FOMC decisions.
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Finvaulta summarizes MUFG's analysis. Attribute opinions, forecasts, time-sensitive values, and chronology to the issuer and report date; do not treat this page as an independent verification or a current market-data source.
Key Takeaways
- 1.USD/JPY has recorded its largest drop outside of intervention since February 2026, driven by turning momentum, shifting retail positioning, and BoJ rate hike expectations.
- 2.MUFG initiates a new tactical short EUR/JPY recommendation (entry at 181.40, target 176.00, stop-loss 184.40) and takes profit on its long AUD/JPY trade at 114.50.
- 3.The ECB is expected to deliver a 25bp rate hike to lift its deposit rate to 3.00%, but market pricing for 75bps of cumulative tightening sets a high bar for a hawkish surprise, creating downside risks for EUR.
Table of Contents
- Upside JPY risks as momentum turns
- JPY: Short yen positions vulnerable to further squeeze
- EUR/USD: Holding up better than expected ahead of ECB meeting
- Weekly Calendar
- New Trade Ideas
- Closed Trade Ideas
- FX Portfolio
- FX Positioning
- JPY Flows – Portfolio & by investor type
- FX Weekly Options Flow Report
- DTCC OPTIONS FLOW
- FX OPTIONS FLOW HEATMAP
- CUMUALTIVE WEEKLY FLOW
Report data
JPY SURGE AS SHORT JPY POSITIONS CUT ON FASTER BOJ HIKES — as of September 4, 2026.
| Metric | Estimate | Context |
|---|---|---|
| BOJ Policy Rate priced by June 2027 | 1.75% | 80bps priced by June 2027, aligning with MUFG's projection of hikes in September, January, and June 2027 taking the rate to 1.75%. |
| Retail Margin Net JPY Position Flow | 5.58 JPY Trillion | Retail net JPY position swung from long JPY 1.45trn to short JPY 4.13trn, representing a JPY 5.58trn selling flow in July. |
| Japanese Equity Purchases by Foreign Investors | 9513 JPY Billion | Largest total over that period since 2013 following the launch of Abenomics. |
| EUR/JPY Trade Idea Entry | 181.40 spot rate | New short trade idea opened with target 176.00 and stop-loss 184.40. |
Reports in this series
FX Weekly is shown in chronological order through this edition, published on September 4, 2026.
Part of the FX Weekly series — view all 13 editions
Looking for the latest edition? FX Weekly (Oct 9, 2026)
- Jun 19FX Weekly
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