Japan hiked to a 31-year high. The yen fell anyway

Rundown · 2026-09-18

A timing note first: this brief is running late. It is being written at 11:00am ET, not 6:30 — the cash session has been open for ninety minutes and the 09:15 and 10:00 releases have already printed. The levels below are a record of how this session was built, not a set of levels standing in front of you. The Bank of Japan raised its policy rate 25bp to 1.25%, the highest since 1995, and the yen fell — a 7-2 vote with two dissents against the hike and a message softer than the action, which took USD/JPY to a 158.05 high rather than the move lower a hawkish hike would normally produce. US index futures are lower against Thursday's settles — ES -0.24%, NQ -0.09%, YM -0.52%, RTY -0.85% — and both the S&P and the Dow opened at their session highs and have sold from there. This morning's hard data was soft on every line: industrial production was unchanged against +0.3% expected, manufacturing output fell 0.3% to end seven straight monthly gains, and the Conference Board's leading index fell 0.1%, its first decline since March. The event that decides the close is at 16:00, where roughly $7 trillion of options notional expires alongside a Nasdaq-100 rebalance that more than doubles SpaceX's index weight.

Overnight

• Index futures are lower across the board against Thursday's settles, and the cash session has extended the move. As of approximately 10:45 ET: ES (Dec) 7,689.00, -18.25 (-0.24%) against Thursday's 7,707.25 settle · NQ 29,716.50, -26.50 (-0.09%) from 29,743.00 · YM 51,946, -274 (-0.52%) from 52,220 · RTY 2,872.40, -24.50 (-0.85%) from 2,896.90
• The reference levels, and nothing more. ES held a 7,696.00-7,739.25 band across Globex before the cash open and set its overnight high at 03:00 ET; it has traded down to 7,683.25 since the bell. Session ranges elsewhere: NQ 29,648.00-29,966.75, YM 51,910-52,380, RTY 2,868.10-2,904.70. The one structural observation worth recording is that the S&P and the Dow both opened at their session highs — SPX at 7,657.17, DJI at 51,826.78 — and neither has revisited them
• Cash, as of roughly 10:45 ET: S&P 500 7,622.10 (-0.21%) · Nasdaq-100 29,423.59 (-0.08%) · Dow 51,520.24 (-0.50%). The price-weighted and small-cap end is again carrying the decline while the Nasdaq-100 sits near unchanged — the same dispersion that has run all week, in both directions
• Asia closed higher and Japan led it. Nikkei 225 65,018.95, +882.70 (+1.38%) · Shanghai Composite 3,911.87, +36.27 (+0.94%) · Hang Seng 24,750.78, +146.49 (+0.60%) · ASX 200 8,731.2, -1.2 (-0.01%). A Japanese equity market up 1.4% on the day its central bank tightens is telling you the same thing the currency did
• Europe is the weak spot and has deteriorated through the morning. The DAX is 25,313.06, -403.65 (-1.57%) and sitting at its session low, having been down only 0.77% at midday London. The FTSE 100 and CAC 40 were each off about 0.7% at that same point

The Dollar & FX

• DXY is 100.41, +0.17 (+0.17%) against Thursday's 100.24 close, in a 100.19-100.56 range. The dollar is firmer for a second session, and today the driver is not US rates — it is the yen
• 6J is the whole story, and it went the wrong way. The Bank of Japan raised its policy rate 25bp to 1.25%, the highest since 1995, and USD/JPY is 157.193, +1.236 (+0.79%) from a 155.957 close, having traded 155.871-158.050. A hike that weakens the currency is what happens when the move is fully priced and the guidance around it is softer than the action itself: the vote was 7-2, with the two dissents against hiking rather than for more, and the statement framed the decision around the risk of inflation running above the 2% target rather than around a sequence of further moves. The market traded the split, not the hike
• 6E and 6B are quiet, and neither has a live event today. EUR/USD is 1.1462, -0.0014 (-0.12%) from 1.1476, range 1.1455-1.1492. GBP/USD is 1.3362, +0.0004 (+0.03%) from 1.3358, range 1.3336-1.3376. Sterling is stabilising after Thursday's Bank of England decision, where the MPC held at 3.75% on a 6-3 vote, with Greene, Mann and Pill voting to hike to 4% against UK inflation at a five-month high of 3.1%. A three-member minority for a hike did not support the pound, because the majority still held
• 6C and 6A are the two that ought to be moving and are not. USD/CAD is 1.4005, +0.0014 (+0.10%), range 1.3976-1.4015 — the Canadian dollar marginally weaker even as crude recovered through the morning. AUD/USD is 0.7112, +0.0002 (+0.03%), range 0.7107-0.7136. Both sit inside yesterday's ranges and neither is carrying information today

Energy & Metals

• A contract-roll warning before the numbers, because it inverts the read. The front-month WTI continuous series rolled from October to November between Thursday and Friday. Read off a continuous chart, crude looks down about 4% this morning; measured contract against its own settle, it is higher. Any crude figure taken from a rolling feed rather than a named contract will have the sign wrong today
• October WTI is $102.63, +$0.72 (+0.71%) against Thursday's $101.91 settle, having traded $99.39-$103.48. November WTI, now the liquid contract, is $97.37, +$0.14 (+0.14%) from $97.23, range $94.83-$98.01
• The overnight move was real and it has been given back. October WTI traded below $100 during the Asian session — the first time under that figure since the 10 September drone strikes on the Saudi East-West pipeline — on continued reporting that Saudi Arabia is restoring capacity and routing barrels through the Strait of Hormuz. Three sessions of selling took roughly 8% off the front month. By mid-morning ET the whole of today's decline had reversed
• Brent is $104.51, -$0.31 (-0.30%) against a $104.82 settle, range $102.16-$105.00 — the same shape, sold in Asia and bought back through the European morning
• Gold is $4,392.10, -$7.60 (-0.17%) against Thursday's $4,399.70 December settle, in a $4,372.20-$4,439.80 range. The overnight high cleared Wednesday's post-Fed peak of $4,413.10 and has been given back in full — a second consecutive session in which a strong overnight bid has failed to survive the US morning, with the dollar firmer and the 10-year back up near 5%

Where We Left Off

• Thursday's RTH close: Dow 51,778.04 (+316.14, +0.61%) · S&P 500 7,637.76 (+85.95, +1.14%) · Nasdaq Composite 26,418.30 (+439.87, +1.69%) · Russell 2000 2,874.63 (+15.82, +0.55%). The Nasdaq-100 closed 29,446.98, +501.92 (+1.73%)
• The recovery was the decline run backwards, group for group. Technology was the best S&P sector at +2.17%, consumer discretionary +1.58% and materials +0.91%, while financials (-0.38%), energy (-0.42%) and communications (-0.43%) all finished lower. The Dow's 316-point gain arrived with three of its heavier groups still red
• The bond market did the work. The 10-year closed 4.939%, down about 8bp from Wednesday's 5.020% — the first meaningful retreat from what had been the highest close since 2007
• What carries over is that Wednesday's split did not close, it widened. The desk asked on Thursday morning whether YM would close its gap to NQ, calling it the cleanest read on whether Wednesday was a rotation or something structural. It did not close: the Nasdaq-100 beat the Dow by a further 1.1 percentage points on Thursday, and YM is the weaker of the two again this morning. Three consecutive sessions of the same dispersion, in both directions, is now the week's defining feature rather than any single day's direction
• Sentiment deserves a line. The AAII bull-bear spread came in at -24.6% against -1.3% the week before — a sharp one-week swing to bearish, recorded in a week in which the S&P has moved less than half a percent net

Yesterday's Data

• Jobless claims fell 10,000 to 196,000 against a 208,000 consensus, a sub-200K print with the insured unemployment rate down to 1.1% — full brief
• The Philadelphia Fed printed 37.8 against 31.3 expected, and firms' own future prices received hit their highest reading since September 1981 — full brief
• Pending home sales rose 0.3% m/m but fell 4.7% y/y, with contracts now falling faster than closings — full brief
• Natural gas storage added 44 Bcf against 49 expected, 29 Bcf below the five-year normal build for the week — full brief

On The Calendar Today

Time ET · Event · Consensus · Prior · Hits

09:15 · Industrial production m/m (Aug) · 0.3% · 0.2% · USD · ES/NQ

09:15 · Manufacturing output m/m (Aug) · 0.3% · 0.2% · USD · RTY

09:15 · Capacity utilization (Aug) · 76.4% · 76.3% · USD

09:30 · Fed Governor Bowman speaks · n/a · n/a · USD · ES/NQ

10:00 · CB leading index m/m (Aug) · 0.1% · 0.2% · USD · RTY

11:45 · Fed's Schmid speaks · n/a · n/a · USD · ES/NQ

13:00 · Baker Hughes rig count · 451 · 450 · CL

16:00 · Quarterly index and single-stock expiration · n/a · n/a · ES/NQ/YM/RTY

16:00 · Nasdaq-100 quarterly rebalance · n/a · n/a · NQ

Everything before 11:00 has printed, and all of it was soft. Industrial production was unchanged in August against +0.3% expected. Manufacturing output fell 0.3%, ending seven consecutive monthly increases, with utilities +1.8% doing the offsetting work. Capacity utilization came in at 76.3% against 76.4%. At 10:00 the Conference Board's leading index fell 0.1% to 99.5, its first monthly decline since March. Note the shape of the week: the survey data has been strong — the Philadelphia Fed beat by 6.5 points on Thursday — while the hard production data has now missed across the board. That gap is precisely the argument between the Chair's position that policy is not restrictive and the case that it already is.

The fulcrum today is not a release, it is 16:00. Roughly $7 trillion of US options notional expires at the close, the second-largest expiration on record according to Citadel Securities data, covering around a quarter of the market. The Nasdaq-100 runs its quarterly rebalance in the same cross, and SpaceX's index weight rises from roughly 1.28% to 2.82%, effective Monday. With about $1.7 trillion benchmarked to the index, that is an estimated $15.5bn to $22bn of programmatic buying concentrated into a single print. For scale, SpaceX's July inclusion triggered roughly $4.3bn. This is mechanical flow rather than anyone's view, which means the last hour's tape carries less information than it usually does.

Index Movers

• NVDA closed Thursday at $219.34, +$5.44 (+2.54%) and is $219.33 now, unchanged on the day. As the largest weight in both the S&P 500 and the Nasdaq-100 it was the single biggest index contribution in Thursday's rally, and its flat tape is the main reason the Nasdaq-100 is holding while the Dow falls
• AMD closed $545.09, +$32.59 (+6.36%), a third consecutive session leading semiconductors, after the neocloud operator Nebius told customers it would raise chip rental rates — AMD EPYC Genoa CPUs +25%, Nvidia GPUs +17% to 21%, memory +41%. A customer raising the price of compute is unusually direct evidence of demand, which is why it moved the entire group rather than one name. AMD is $544.04 (-0.19%) this morning
• SPCX closed $154.81, +$3.93 (+2.60%) and is $152.44 (-1.53%) now on heavy volume, into the rebalance that doubles its Nasdaq-100 weight at the bell. A stock trading lower in front of a known $15.5bn-plus buy imbalance is a useful reminder that a scheduled flow is not a surprise, and the market has had since 8 September to position for it
• GS closed $951.47, +$13.49 (+1.44%) after Wednesday's $38.69 fall, and is $946.75 (-0.50%) this morning. As the highest-priced Dow constituent it remains the largest single swing factor in YM in both directions
• MRNA closed $158.07, +$12.45 (+8.55%) after presenting at the Morgan Stanley healthcare conference, extending a run that has taken it from roughly $62 in mid-August on the Phase 3 intismeran cancer-vaccine result with Merck. An S&P constituent, but at a weight that makes this a sector signal rather than an index one

What Would Change The Read

• Scoring Thursday's YM-versus-NQ call. The desk asked whether the Dow would close its gap to the Nasdaq-100. It did not — NQ outperformed again on Thursday and is outperforming again this morning. The rotation reading has now held for three sessions, which is the strongest evidence this week has produced for anything
• Scoring the crude call. The desk said on Thursday that the pipeline story's second leg was the open question, and that a backwardated curve was priced for a resolution that had not arrived. Crude has now traded under $100 and back above $102 inside a single session. That is what an unresolved supply story looks like, not a settled one
• Whether the closing cross moves the index or only the stock. A $15.5bn-to-$22bn single-name buy imbalance inside a $7 trillion expiration is the largest scheduled flow of the quarter. Whether NQ's final hour reflects it, and whether Monday hands it back, is the cleanest available test of how much index-level movement purely mechanical demand can produce
• Whether the hard-data softness starts to matter. Industrial production unchanged, manufacturing output down 0.3% and a negative leading index is three soft readings in one morning, against survey data that has been unusually strong. If next week's releases follow the production side rather than the survey side, the October meeting the Chair left live becomes a different conversation
• Whether 158 holds in USD/JPY. The pair traded to 158.05 immediately after a rate hike. Intervention speculation was already live earlier this month, and a tightening that weakens the currency removes the most obvious remaining tool from the shelf

The Bottom Line

The defining feature of this week is not direction, it is dispersion — three consecutive sessions in which the Nasdaq-100 and the Dow moved by materially different amounts, in both directions, and a fourth developing this morning. Overnight a Bank of Japan hike to a 31-year high weakened the yen rather than strengthening it, because the move was fully priced and a 7-2 split reads as a committee that may not continue. Crude broke $100 in Asia and was bought back in full by mid-morning, which says the supply story is still open. This morning's hard data — production flat, manufacturing output down, the leading index negative — sits awkwardly beside a survey run that has been strong, and that tension is the genuinely new thing this week has produced. None of it is likely to decide today's close. Roughly $7 trillion of expiring options and a rebalance that doubles one constituent's weight in the Nasdaq-100 will do that, and the final hour of a quarterly expiration is the part of the session where price says least about what anyone actually believes.

_For informational purposes only. Not investment advice._