Japanese Yen Surges as MOF Steals the BOJ's Thunder After FOMC
The Japanese yen staged its biggest rally in months after what appears to have been intervention by Japan's Ministry of Finance (MOF). With USD/JPY suffering its largest one-day decline since April, the focus now shifts to whether today's Bank of Japan meeting can reinforce the yen's momentum.
View related analysis:
- Gold Bounces Within Range After Post-FOMC Dollar Selloff
- USD/JPY, GBP/JPY Outlook: US Dollar Slides Despite Fed Dissent, BOJ Up Next
- Australian Dollar Broadly Lower as Soft CPI Reverses RBA Hike Bets
- US Dollar Bulls Tighten Grip, Yen Bears Pile In: FX Futures Positioning | COT Report
Suspected MOF Intervention Overshadows the BOJ Meeting
Technically, we need to wait for the official data before confirming whether Japan’s Ministry of Finance (MOF) intervened in the currency market on Thursday. That said, most can probably assume it did with a cursory glance at their Japanese yen charts. The extreme volatility seen on Thursday was of a similar magnitude to that witnessed when the MOF intervened on April 30.
Source: ICE, LSEG
- USD/JPY fell almost 600 pips from the day’s high to an 11-week low, dropping below 160 before finding support just above its 200-day EMA. In fact, its daily range was wider than that seen during the April 30 intervention.
- EUR/JPY also required its 200-day EMA to come to the rescue amid a 530-pip selloff, with its daily range effectively matching that seen during the April 30 intervention.
- GBP/JPY also fell back to its prior intervention lows, although it was a relatively unconvincing underperformer as it failed to test its 200-day EMA.
- AUD/JPY fell more than 300 pips before finding support around 111.30, near its prior intervention low.
- CAD/JPY briefly traded below its 200-day EMA before recovering back above it, although it now sits in line with its April 30 low.
BOJ Meeting in Focus After Intervention Fears
The focus now shifts to today’s Bank of Japan (BOJ) meeting, although much of the excitement may already be behind us. The BOJ is widely expected to leave its policy rate unchanged, placing the emphasis on Governor Ueda's guidance. If policymakers want to capitalise on the yen's renewed momentum, even a slightly hawkish tilt—such as higher growth or inflation forecasts, or guidance that leaves the door open to further tightening—could help extend Thursday's gains.
That said, intervention days rarely get followed by levels of volatility even remotely close. We typically find that price action remains well within the range of intervention day, and daily ranges tend to trend lower in the days ahead. Interestingly, USD/JPY tends to close marginally higher the day after, though none of the post-intervention daily returns are convincing enough to be deemed as anything other than noise following a shock event. So while the BOJ meeting might add some spice, I do not anticipate we might see anywhere near the levels of volatility we saw on Thursday. Which is useful to know, if one wants to manage ones own expectations to fine tune risk management.
Source: ICE
Extreme Yen Short Positioning Left Traders Vulnerable
Traders were arguably too short the Japanese yen in the futures market, according to the latest Commitment of Traders (COT) report. Gross short positions among asset managers increased by 23.5k contracts (18.3%) last week alone, while large speculators added another 21.1k contracts (8.8%). For both groups, gross shorts approached record highs, while net short exposure climbed to a two-year high. Although it is difficult to pinpoint an exact turning point using COT data, the conditions for a reversal—or at least a bearish shakeout—were clearly in place.
Source: CFTC (COT), CME, LSEG
USD/JPY Technical Analysis: US Dollar vs Japanese Yen
It is tricky to have a directional bias for today given the dynamics leading into today’s BOJ meeting. I have therefore included potential support and resistance levels I suspect professional traders may be using to tread around. Note that momentum has turned higher into the end of the US session, and that support eventually found at the May VPOC.
The 160 makes a potential upside target or resistance level for bears, alongside the July low at 160.44. In the event that USD/JPY bulls somehow recover some decent ground, the monthly pivot point sits at 151.50. Thoug being the last day of the month means this technical level will be gone by the weekend.
Note that the monthly S1 pivot is just above 158, a break above which brings 157 into focus.
Source: ICE, TradingView
View the full economic calendar
-- Written by Matt Simpson
Follow Matt on Twitter @cLeverEdge
The information on this web site is not targeted at the general public of any particular country. It is not intended for distribution to residents in any country where such distribution or use would contravene any local law or regulatory requirement. The information and opinions in this report are for general information use only and are not intended as an offer or solicitation with respect to the purchase or sale of any currency or CFD contract. All opinions and information contained in this report are subject to change without notice. This report has been prepared without regard to the specific investment objectives, financial situation and needs of any particular recipient. Any references to historical price movements or levels is informational based on our analysis and we do not represent or warranty that any such movements or levels are likely to reoccur in the future. While the information contained herein was obtained from sources believed to be reliable, author does not guarantee its accuracy or completeness, nor does author assume any liability for any direct, indirect or consequential loss that may result from the reliance by any person upon any such information or opinions.
Futures, Options on Futures, Foreign Exchange and other leveraged products involves significant risk of loss and is not suitable for all investors. Losses can exceed your deposits. Increasing leverage increases risk. Spot Gold and Silver contracts are not subject to regulation under the U.S. Commodity Exchange Act. Contracts for Difference (CFDs) are not available for US residents. Products and services available depend on your location and the entity holding your account. Before deciding to trade forex, commodity futures, or digital assets, you should carefully consider your financial objectives, level of experience and risk appetite. Any opinions, news, research, analyses, prices or other information contained herein is intended as general information about the subject matter covered and is provided with the understanding that we do not provide any investment, legal, or tax advice. You should consult with appropriate counsel or other advisors on all investment, legal, or tax matters. References to FOREX.com or GAIN Capital refer to StoneX Group Inc. and its subsidiaries. Please read Characteristics and Risks of Standardized Options.
FOREX.com is a registered FCM and RFED with the CFTC and member of the National Futures Association (NFA # 0339826). Forex trading involves significant risk of loss and is not suitable for all investors. Full Disclosures and Risk Warning. Increased leverage increases risk.
GAIN Capital Group LLC (dba FOREX.com) 30 Independence Blvd, Suite 300 (3rd floor), Warren, NJ 07059, USA. GAIN Capital Group LLC is a wholly-owned subsidiary of StoneX Group Inc.
© FOREX.COM 2026