USD/JPY Holds Below the 157.23 Average as 2 Central Banks Tighten in 48 Hours

USD/JPY traded at 154.15 Thursday afternoon, up 0.40% on the day, after spending the Asian and European sessions grinding lower toward 153.38.

The recovery came entirely from one data release. August producer prices rose 5.4% year over year, above the 5.3% forecast and accelerating from a revised 4.8% in July. Core PPI increased 4.6% annually, matching expectations and up from a revised 4.3%. On a monthly basis, headline PPI added 0.4% and the core index 0.2%. Weekly initial jobless claims declined to 206,000 for the week ending September 5.

The dollar index recovered from an intraday low of 98.71 to 99.10, having hit a nearly three-week low on Wednesday. The benchmark 10-year Treasury yield climbed toward 4.90%, its highest since November 2023.

Set against the trend, the bounce is noise. USD/JPY posted a six-month low at 152.89 on Wednesday and remains within 130 pips of it. The pair has traded below mid-153.00s for most of the week and has been in an uninterrupted decline for more than a week.

The scale of the yen's move is the part that matters. The Japanese currency has strengthened 3.71% over the past month while remaining 4.18% weaker over twelve months — the kind of split that describes a violent reversal rather than a drift. In July the yen touched a 40-year low. By early September it was at its strongest since February.

That is a 40-year low to a seven-month high in roughly eight weeks.

Cross-currency performance Thursday confirms the yen was among the better performers despite the decline. The dollar gained 0.51% against the yen but 0.71% against the Australian dollar and 0.58% against the New Zealand dollar, while losing ground relative to the Canadian dollar's 0.16% decline. The yen sat mid-pack on a day the dollar rallied broadly.

Two central bank meetings land inside 48 hours next week, and both are expected to tighten. That collision is the entire forecast.

From a 40-Year Low in July to a Seven-Month High in September

The reversal in the yen is one of the largest currency moves of 2026 and it happened faster than almost anyone positioned for.

Through the second half of 2025, USD/JPY ground higher from a ¥144 to ¥148 summer consolidation, broke above ¥150 in October and November, and reached ¥156 to ¥159 by December, setting a yearly high near ¥159. That trend continued into 2026, with the pair posting a high at 160.73 and the yen ultimately hitting a 40-year low in July.

The July low was the capitulation point. From there, the currency reversed hard, driven by three forces that arrived together: the unwinding of carry trades, expectations of greater capital repatriation into Japan, and growing U.S. political pressure for Japan to support the yen through tighter monetary policy.

By early September the yen had strengthened toward 153 per dollar, reaching its strongest level since February. Wednesday produced the low at 152.89.

Measured from 160.73 to 152.89, USD/JPY has fallen 7,840 pips — 4.9% — with most of that compressed into a handful of weeks.

Positioning explains the velocity. The yen carry trade had been one of the most crowded structures in global markets: borrow at effectively zero in Japan, deploy into higher-yielding assets elsewhere, collect the spread. Every basis point of Bank of Japan tightening raises the cost of that funding leg, and every yen of appreciation produces a mark-to-market loss on the currency leg. The two compound.

The 2024 precedent is instructive and it was smaller. A 15-basis-point BoJ hike triggered a violent global unwind that year, demonstrating that even when rate differentials barely move, positioning amplifies the effect enormously.

What is being priced now is not 15 basis points. It is a full 25-basis-point move with a follow-up already assigned high probability.

The comparison the market keeps returning to is the historical parallel: the divergence that pushed USD/JPY to 161 in July 2024, a level not seen since 1986. That divergence is now running in reverse.

A 25-Basis-Point BoJ Hike to 1.25% Is Fully Priced for September 18

The Bank of Japan meets on September 17–18, and traders have fully priced a 25-basis-point increase.

The policy rate currently sits at 1.00%, reached by mid-2026 through the normalisation path that began when yield curve control ended in March 2024. Rates moved from -0.1% to 0.25% by July 2024, then to 0.50% in January 2025, and onward to 1.00% this year. At the July 2026 meeting the Board held at 1.00% on an 8-1 vote that rejected a proposal to go further, to 1.25% — meaning one member was already voting for the move the market now expects.

A hike next Friday takes the rate to 1.25%.

More important than the move itself is what sits behind it. Markets assign a high probability to a follow-up increase in December, with expectations supported by revised growth figures and strong wage gains. That two-hike path is what has driven the yen rather than the September meeting alone.

The Governor has been explicit that inflation is again moving closer to the 2% target, and Japanese headline inflation has been running above 3% for an extended stretch. Reporting earlier this year indicated the Bank was considering accelerating the pace of tightening beyond its recent cadence of roughly two hikes per year.

The quantitative tightening question runs alongside it. Under the plan unveiled in June 2024, the BoJ reduced monthly JGB purchases from around ¥5.7 trillion to ¥2.9 trillion by early 2026 through quarterly reductions of ¥400 billion. Whether the Board accelerates, slows or pauses that runoff at the September meeting matters for the long end of the JGB curve and, through it, for repatriation flows.

The Bank of Japan announces after each of its eight scheduled annual meetings, and this is the one the currency market has been building toward since July.

Because the hike is fully priced, the risk is asymmetric in an uncomfortable direction. A 25-basis-point move delivers nothing. Anything less than a hike, or a hike with dovish guidance on December, produces a violent yen reversal.

Bessent's Warning and the Intervention Overhang

The most consequential development for USD/JPY this week did not come from a central bank. It came from the U.S. Treasury.

Treasury Secretary Scott Bessent cautioned traders against betting on a weaker yen, saying he has "pretty good insight" into what the Bank of Japan will do when he is making a call and intervening in the currency market. The comment sent the yen toward 153 per dollar and it has not meaningfully retraced since.

That statement is unusual on two counts. It signals that Washington considers yen weakness a policy problem worth naming publicly, and it implies coordination — a U.S. Treasury Secretary describing his own intervention decisions alongside knowledge of BoJ intentions is not the language of a passive observer.

The same official had previously characterised the BoJ as behind the curve and likely to raise rates soon.

For positioning, an explicit official warning against a short-yen trade is a form of soft intervention that costs nothing. It raises the tail risk on every carry position without requiring a single dollar of actual reserve deployment, and it does so at a moment when the technical picture is already stretched.

The Bank of Japan has historically intervened directly in currency markets, generally to lower the value of the yen rather than support it, and it refrains from doing so often because of political concerns among its main trading partners. A July intervention this year briefly strengthened the currency when BoJ tightening outpaced Fed expectations.

The configuration now is different and more dangerous for dollar bulls. Japanese authorities want a stronger yen. American authorities have said they are watching. And the BoJ is tightening into it.

That is a market where the official sector and the policy direction point the same way, and it explains why USD/JPY has failed to bounce meaningfully despite an oversold technical reading.

The pair's inability to hold above 154.50 on a 5.4% U.S. inflation print is the clearest evidence of that overhang.

The Takaichi Pivot: A Dovish PM Turned Yen Defender

The political dimension has reversed completely, and it is underappreciated.

Prime Minister Sanae Takaichi was elected as Japan's first female prime minister in late 2025 and was widely characterised as dovish at the time, with the yen weakening on her victory. She vowed to strengthen the economy and defence capabilities and to deepen relations with the United States, forming a coalition after the ruling party allied with the Japan Innovation Party.

The administration has since adopted a markedly more hawkish stance, with policymakers acknowledging the need to limit excessive yen weakness. An economic adviser to the Prime Minister said the central bank is likely to raise rates this month.

That shift matters because Japanese monetary policy has never operated independently of fiscal and political preference. A government that wanted a weak yen for export competitiveness was a constraint on BoJ normalisation. A government that has identified yen weakness as an economic problem removes that constraint entirely.

The reason for the change is domestic inflation. Headline Japanese CPI running above 3% against a 2% target erodes real household income, and imported energy costs are compounding it — Brent at $105.37 and WTI at $99.35 hit a country that imports essentially all of its hydrocarbons.

A weak yen in a $60 oil world is an export subsidy. A weak yen in a $105 oil world is a household tax.

The political calculus follows the arithmetic, and it has flipped.

Combined with U.S. political pressure for Japan to support the currency through tighter policy, the yen now has backing from the government in Tokyo, the central bank, and the Treasury in Washington simultaneously. That is a rare alignment and it is the structural reason the 152.89 low has held rather than triggering profit-taking.

Japanese manufacturers' sentiment improved for a second consecutive month in September, helped by resilient demand for semiconductors and data centers — removing the growth argument that would have justified continued accommodation.

62% Fed Odds and a Two-Meeting Collision

The other half of this pair is repricing in the same direction, which is what has kept USD/JPY from collapsing outright.

Market-implied odds of a Federal Reserve rate increase at the September 15–16 meeting sit between 62% and 64%, up from roughly 45% a month ago. The target range is 3.50% to 3.75%, and a hike would take it to 3.75% to 4.00%.

The repricing was driven by data rather than rhetoric. August nonfarm payrolls came in at 162,000 against a consensus near 56,000, with unemployment holding at 4.1%. Thursday's headline PPI at 5.4% annually confirmed the inflation acceleration, driven by energy — crude has climbed more than 5% in a month with WTI touching $100.10 and Brent at $105.37.

The sequencing next week is unusual and it creates a specific trading structure. The FOMC concludes Wednesday, September 16. The Bank of Japan concludes Friday, September 18. Two of the world's most important central banks deliver policy decisions within 48 hours, and both are expected to tighten.

Four outcomes with very different implications. Both hike: the differential is unchanged and USD/JPY trades on guidance rather than the moves themselves, most likely holding 152.89 to 157.00. Fed hikes and BoJ holds: the differential widens by 25 basis points and the pair snaps back toward 157.23. Fed holds and BoJ hikes: the differential compresses by 25 basis points on top of already-hawkish BoJ pricing, and 150 comes into view quickly. Both hold: a yen-negative surprise on the Japanese side outweighs the dollar-negative surprise, favouring a bounce.

The market is currently priced for the first outcome with a lean toward the third.

Friday's consumer price index, with consensus at 0.4% monthly, 3.4% annually and core at 2.4%, is the last input before the Fed leg resolves. Core PPI at 0.2% monthly against a 0.3% forecast is the one piece of evidence pointing toward a hold.

The Differential at 250 Basis Points and Compressing

The mechanical driver of USD/JPY is the policy spread, and it has been narrowing all year.

The differential ran roughly 325 basis points in early 2026. After a BoJ move to 1.25% and with the Fed at 3.75% on the upper bound, it compresses to 250 basis points. Projections earlier this year anticipated a range of 250 to 275 basis points by the fourth quarter, and the market is arriving at the lower end of that path faster than expected.

The pace of compression determines who is right about this pair, and the pace has accelerated.

The reason each BoJ move carries outsized impact is the starting point. After decades of zero and negative rate policy, a move from 1.00% to 1.25% is a 25% increase in Japanese funding costs. The same 25-basis-point move applied to a 3.75% U.S. rate is a 6.7% increase. Percentage sensitivity, not absolute spread, is what drives the carry unwind.

Bank forecasts for 2026 have ranged from 150 to 164 depending on assumptions about which central bank moves faster. Those with the Fed easing and the BoJ tightening cluster near the bottom of that band. Those assuming continued Fed hawkishness sit near the top. The current configuration — both tightening simultaneously — was not the base case for most of the year.

The transmission is visible in bond markets. As Japanese 10-year government bond yields rise, the traditional yield-spread trade that favoured the dollar unwinds rapidly. Japanese institutions that spent two decades exporting savings into Treasuries and European credit have a domestic alternative for the first time since the 1990s, and repatriation flows are additive to the carry unwind rather than substituting for it.

That is the structural argument for a lower USD/JPY over quarters rather than weeks, and it does not depend on the Fed cutting.

The tactical argument runs the other way. A market fully priced for a BoJ hike gets nothing on delivery, and 250 basis points of carry still favours the dollar in absolute terms.

RSI at 25.76 and 358 Pips Below the 20-Day EMA

The technical picture is the most stretched it has been on this pair in years, and it argues for a bounce that has not arrived.

On the daily chart, USD/JPY trades at 153.64 against a 20-day exponential moving average at 157.23 — a gap of 359 pips, or 2.3%. The 14-day Relative Strength Index reads 25.76, deep in oversold territory.

An RSI below 30 on a major currency pair is uncommon. It typically resolves either through a sharp corrective bounce or through a period of sideways consolidation that works off the condition without price recovering. Which of those happens here depends on whether the fundamental driver persists, and next week's two meetings answer that.

The near-term tone remains bearish while price holds well below the 20-day EMA. Initial resistance aligns with that average around 157.23, and a daily close above it would be required to ease the current downward pressure. That is 3.5 handles above the current level — a considerable distance for a pair whose average daily range has been running under 100 pips.

Below, immediate focus sits on the 153.64 area as a pivot zone. A sustained break lower exposes fresh lows and keeps sellers in control.

The 200-day moving average sat near 153.80 in late April, when price was trading well above at 159. A decisive daily close below the 200-day was identified then as the first technical signal that the yen bull case was accelerating. That close has now happened, and it happened weeks ago.

The pair respects round numbers more than almost any other cross, because Japanese exporters and importers place substantial hedging orders at 145, 150 and 155. That behaviour is why 155.00 has been identified as the level to use for strategic selling on corrective rallies, and why 150 will function as a magnet if 152.89 gives way.

An oversold pair in a fundamentally driven downtrend does not mean reverse. It means size positions for a violent counter-trend move that does not change the direction.

The Levels: 152.89, 153.64, 155.00, 157.23

The map is unusually clean and each level has a specific origin.

Support starts at 152.89, Wednesday's six-month low and the lowest print since February. It is the pivot for the entire structure. A daily close below it exposes 152.00 and then the psychological 150.00 handle, where exporter hedging orders concentrate. Below 150, there is little structure until the 148 area where the pair consolidated through mid-2025.

The 153.64 zone is the immediate pivot and the pair is oscillating around it. Thursday's 154.15 print sits just above.

Resistance begins at 154.50, roughly the top of Thursday's post-PPI bounce. Then 155.00, the round number and the level identified as the strategic selling zone on corrective rallies. Then 157.23 at the 20-day EMA, which is the line separating a correction from a trend change.

Above 157.23, the pair would need to reclaim 158.80 — where buyers repeatedly emerged on dips earlier in the year — before the 2026 high at 160.73 came back into play. The 2024 multi-year high at 161.95 is the ceiling on any dollar-bull scenario.

Probability-weighting those: a move to 157.23 requires the Fed to hike and the BoJ to disappoint, which is roughly a 20% path. A break of 152.89 requires either a soft U.S. CPI or hawkish BoJ guidance on December, and either alone is sufficient — call it 45%. The remaining 35% is continued consolidation between 152.89 and 155.00 into and through both meetings.

The asymmetry favours the downside, and the reason is positioning rather than levels. A market that has already fully priced a BoJ hike and assigned high probability to a December follow-up has room to price a third move. A market at 62% odds on a single Fed hike has less room to price additional tightening given the softening core inflation data.

A net-short bias using rallies toward 155.00 as selling opportunities is the structural expression of that view.

The Carry Unwind and Capital Repatriation

The flow story underneath the price is what makes this move different from prior yen rallies.

Two distinct mechanisms are operating. The first is the unwinding of carry trades — positions funded in yen at near-zero cost and deployed into higher-yielding assets globally. Rising Japanese funding costs and an appreciating yen force those positions closed, and the closing requires buying yen.

The second is capital repatriation. Japanese institutional investors — insurers, pension funds, banks — have spent two decades holding foreign bonds because domestic yields offered nothing. With the policy rate at 1.00% heading to 1.25% and JGB yields rising accordingly, the calculus reverses. Repatriating capital into domestic bonds requires selling foreign currency and buying yen, and it is a slower, larger and more persistent flow than speculative carry unwinding.

The two reinforce each other. Carry unwinding is fast and produces the sharp moves. Repatriation is slow and sets the trend.

The 2024 episode demonstrated the first mechanism in isolation. A 15-basis-point hike triggered a global deleveraging that hit equities, crypto and emerging market currencies alongside the yen cross, because the yen funding leg sat underneath positions across every asset class. Bitcoin fell 2.34% Thursday and every risk asset was pressured, with a stronger yen ahead of the BoJ decision named among the reasons.

What is happening now is both mechanisms together, and the second one has barely begun.

The scale is the reason to take it seriously. Japan holds one of the largest net international investment positions in the world. Even a small percentage shift in the allocation of that capital back toward domestic assets represents flows that dwarf speculative positioning.

The offsetting consideration: repatriation is a multi-year process, not a September event. It supports a structurally lower USD/JPY over years. It does not determine where the pair trades next Friday afternoon.

Friday's CPI: Three Scenarios and What Each Does

The U.S. consumer price index at 8:30 a.m. ET Friday is the final input before the FOMC, and it resolves the dollar leg of this pair.

Consensus calls for headline CPI at 0.4% monthly and 3.4% annually, with core expected at 2.4%.

Scenario one — core at or below 2.3%. Fed hike odds collapse from 62% toward 35%, the 10-year backs away from 4.90%, the dollar index breaks 98.71, and USD/JPY loses 152.89 within hours. Targets 152.00 then 150.00 into the BoJ meeting. The core PPI miss at 0.2% monthly against a 0.3% forecast is the evidence supporting this outcome. Probability: roughly 30%.

Scenario two — core at 2.4% to 2.5% with headline at 0.4%. Nothing resolves. USD/JPY chops between 153.00 and 155.00 into the September 16 FOMC, with the meeting itself becoming the catalyst. Probability: roughly 40%.

Scenario three — core above 2.6% or headline above 0.5%. Fed odds run toward 85%, the 10-year clears 5.00%, the dollar index pushes past 99.50, and USD/JPY squeezes toward 155.00 and possibly 157.23 as oversold positioning unwinds. Probability: roughly 30%.

The energy component tilts the headline risk upward. WTI at $99.35 and Brent at $105.37 are at four-month highs and pass into gasoline and utilities with a short lag. Headline is more likely to run hot than cool.

Core is the variable that offsets it, and August core PPI at 0.2% monthly is the only evidence pointing that way.

Critically, even scenario three does not change the yen trend. A squeeze to 157.23 into a BoJ meeting that delivers a hike and guides toward December is a selling opportunity, not a reversal. The pair's direction is being set by the BoJ, and the Fed determines only how far the counter-trend rallies extend.

Verdict and Forecast: Oversold, Stretched, and Still Going Lower

USD/JPY at 154.15, up 0.40% on a 5.4% U.S. inflation print, is a pair that could not manage a meaningful bounce on the most dollar-positive data of the week.

That failure is the signal. Every input Thursday favoured the dollar: PPI above consensus, jobless claims at 206,000, the dollar index recovering from 98.71 to 99.10, the 10-year at 4.90%, and 62% to 64% odds on a Federal Reserve hike. The pair gained 61 pips and remains within 130 pips of Wednesday's 152.89 six-month low, 359 pips below its 20-day EMA at 157.23, with RSI at 25.76.

The yen's support is not technical and it is not going away next week. A 25-basis-point BoJ hike to 1.25% on September 18 is fully priced, with high probability assigned to a December follow-up. The July meeting already produced an 8-1 vote where one member wanted 1.25%. Japanese manufacturing sentiment has improved for two consecutive months on semiconductor and data centre demand. Wage gains and revised growth figures support further tightening. The Takaichi administration has pivoted from dovish to explicitly concerned about excessive yen weakness. And the U.S. Treasury Secretary has publicly warned traders against betting on a weaker yen while claiming insight into BoJ decisions.

That is a currency with the central bank, the domestic government and a foreign treasury all pointing the same direction.

The forecast follows. Into Friday's CPI, the range is 152.89 to 155.00. A soft core print breaks 152.89 and targets 152.00 then 150.00. A hot print squeezes toward 155.00 and possibly 157.23 as oversold positioning unwinds — and that squeeze is a selling opportunity rather than a trend change. The base case through the two meetings is consolidation between 152.89 and 155.50, with the resolution arriving Friday, September 18 rather than Wednesday, September 16.

Over a three-month horizon the bias is clearly lower. The policy differential compresses from 325 basis points at the start of 2026 toward 250 basis points after next week, repatriation flows have barely started, and JGB yields rising is dismantling the yield-spread trade that carried this pair from 144 to 160.

Net short with rallies toward 155.00 as the entry, and a stop above 157.23, is the structure. The one scenario that invalidates it is a BoJ that hikes and then signals it is finished — and after an 8-1 vote for more in July, that is not the way to bet.

That's TradingNEWS