A 2% Slide, but a Narrow One
The Nikkei 225 fell 2.12% on Thursday to close at 63,290.11, paring a morning plunge of more than 1,900 points, after an overnight rout in US technology shares — set off by earnings from major US firms, including Amazon and Intel, that highlighted heavy cash burn and rising capital expenditure tied to artificial intelligence — spilled into Tokyo. The broader market held up considerably better: the TOPIX-tracking 1306 ETF proxy closed down 1.16% at 416.40, and nine of 17 TOPIX-17 sector ETF proxies actually advanced. That gap is the day’s real story — this was a concentrated de-rating of the AI complex, not a broad liquidation.
The chip-equipment heavyweights took the brunt. Tokyo Electron fell 5.19% to 9,514 and Advantest dropped 5.86% to 34,860, while SoftBank Group — the market’s most direct AI-investment proxy — slid 5.96% to 4,481. Away from tech, the tape was calm: Toyota eased just 0.23%, Sony added 0.56%, and Fast Retailing rose 2.09%. Stress gauges did flash, however. The Nikkei Volatility Index jumped 8.02 points to 33.82, its 91st percentile over the past 935 sessions, and S&P 500 futures traded down roughly 1.1% during Tokyo hours after Wednesday’s 0.30% cash decline — keeping the overnight risk front of mind. Total TSE turnover was a heavy ¥9.40 trillion.
BOJ Holds at 1.25%, With a Hawkish Lean
The Bank of Japan concluded its two-day meeting by leaving the short-term policy rate at 1.25%, as expected. The accompanying message tilted hawkish: Governor Kazuo Ueda said underlying inflation has sustainably reached the 2% target, the bank raised its core inflation and GDP forecasts, signaled openness to a rate hike as early as December, and announced plans to accelerate ETF sales to roughly ¥860 billion per year starting January 2027.
The currency reaction was muted. USD/JPY stood at 157.19 at Thursday’s Tokyo close, down 0.41% — a modestly firmer yen, with markets balancing the hold against the normalization signals. Banks found relative support from the tightening trajectory, though MUFG still slipped 0.49% to 3,447 in the risk-off tape. JGB yields (MOF, Wednesday’s official closes) continued to drift higher at the long end: the 10-year at 2.876% (+0.9bp), the 20-year at 3.701% (+1.6bp) and the 30-year at 3.956% (+1.5bp).
Sectors and Movers: A Split Tape
| TOPIX-17 proxies (ETF basis) | Day | vs TOPIX |
|---|---|---|
| Transport & Logistics | +2.76% | +3.92pp |
| Retail | +2.15% | +3.31pp |
| Foods | +2.13% | +3.30pp |
| Electric & Precision | -2.80% | -1.64pp |
| Power & Gas | -3.06% | -1.90pp |
| Steel & Nonferrous | -5.21% | -4.05pp |
Within our fixed 95-name large-cap universe, the rotation into domestic-demand names was striking. Oriental Land surged 8.45% on 2.7x average volume, ANA gained 6.31%, and Capcom, NYK Line and Shiseido all rose more than 5%. On the losing side, Fujitsu collapsed 16.20% on 3.2x volume — Thursday’s standout casualty — followed by Lasertec (-8.81%), Murata (-7.72%), TDK (-7.22%) and TEPCO (-6.97%), the latter consistent with Power & Gas sitting among the worst sector proxies.
Positioning: Shorts Did Not Press the Decline
Short sales accounted for 40.0% of total TSE trading value on Thursday (32.4% under the price rule, 7.6% unrestricted). That is elevated in absolute terms — a defensive tape — but it sits in the lower third of the past eight sessions’ 39.4%–45.6% range, below the 41.2% average. In other words, a 2% index drop did not bring an aggressive new wave of shorting.
Wednesday’s JSF margin data (the latest available) points the same way. SoftBank Group saw both its stock-lending balance (shares borrowed for shorting, down 18,300) and its margin-loan balance (leveraged long demand, down 131,600 shares) shrink — a de-grossing pattern rather than one-way bets. Tokyo Electron’s stock-lending balance fell to zero (down 13,600 shares) even as margin buying ticked up 12,500 shares, suggesting shorts covered and dip-buyers leaned in ahead of Thursday’s chip weakness. Advantest was the exception, with stock lending up 7,300 shares while margin longs fell 108,500. Meanwhile, premium charges (gyaku-hibu — the extra daily cost short sellers pay on hard-to-borrow names) applied to 467 of 1,019 loanable issues, a broad 46% footprint of squeeze pressure.
Separately, JPX published 1,146 large disclosed short-position reports across 738 issues on Thursday. These are lagged regulatory position filings — positioning context, not today’s selling. The largest aggregate disclosed shorts were ReYuu Japan (14.4%), KLab (12.8%) and W-SCOPE (12.5%); the biggest increase versus prior reports was Astroscale, up 3.58 percentage points.
Weekly Flows
MOF cross-border securities data for the week of October 18–24 (major designated reporters; a different basis from exchange data, so direction matters more than the exact amount) showed foreign investors net buying ¥1.18 trillion of Japanese equities, while Japanese residents net bought ¥0.29 trillion of foreign equities. These are weekly figures that pre-date Thursday’s sell-off, but they confirm foreign demand was firmly intact coming into this week — worth remembering when judging whether today’s drop finds buyers.
What to Watch
- December-hike pricing. Ueda’s explicit openness to a December move, raised forecasts and faster ETF sales put the yen and bank shares at the center of the next few sessions; USD/JPY at 157.19 barely moved on the day.
- US tech follow-through. With S&P 500 futures down roughly 1.1% during Tokyo hours, Friday’s setup for Tokyo Electron, Advantest and the Fujitsu aftermath hinges on the overnight US session.
- Volatility and positioning confirmation. The Nikkei VI at 33.82 (91st percentile) is stressed; Thursday’s JSF balances and the next short-sell ratio prints will show whether the day’s restrained shorting gives way to covering or fresh pressure.
Disclaimer: This is an information and analysis publication, not investment advice. See our Methodology for data sources, standards, and our corrections policy.