Monday in Tokyo was two markets in one. The Nikkei 225 fell 503.51 points, or 0.80%, to 62,189.65 — a third straight decline and its lowest close since late July — dragged down almost entirely by the high-priced semiconductor names that dominate the price-weighted index. The broader TOPIX went the other way: our 1306 ETF proxy closed up 0.50%, and 13 of 17 TOPIX-17 sectors advanced. This was rotation, not retreat.
Chips Down, Barrels Up
The damage was concentrated. Tokyo Electron (8035) lost 3.68% to 9,110 and Advantest (6857) fell 3.93% to 31,070, with SCREEN (7735) off 4.34% and Renesas (6723) down 3.57% among our 95 tracked large caps. Fast Retailing (9983), another heavyweight in the Nikkei’s weighting scheme, shed 2.50% to 73,980. Weak cues from Friday’s US session — the S&P 500 closed down 0.52% at 7,623.68 — and caution ahead of central bank decisions and earnings kept buyers away from the AI complex, though overnight S&P futures firmed modestly (+0.12%) during Tokyo hours.
The money went somewhere specific: energy and value. Sector leadership by TOPIX-17 ETF proxies (figures may deviate slightly from official sector indices):
| Sector (ETF proxy) | Day | vs TOPIX | 5 days |
|---|---|---|---|
| Energy Resources | +3.23% | +2.72pp | +3.9% |
| Power & Gas | +3.06% | +2.55pp | +3.9% |
| Trading & Wholesale | +2.68% | +2.18pp | +1.5% |
| Electric & Precision | -1.96% | -2.46pp | -4.9% |
| Machinery | -1.50% | -2.01pp | -6.3% |
| Steel & Nonferrous | -1.19% | -1.70pp | -8.6% |
Among large caps, INPEX (1605) jumped 4.90% on 1.3x average volume, Mitsubishi Corp (8058) gained 4.14%, Mitsui Fudosan (8801) rose 3.51% on 1.7x volume, and ENEOS (5020) and Itochu (8001) added 3.42% and 3.02%. Note the five-day columns above: machinery is down 6.3% and steel & nonferrous 8.6% over the week, so Monday’s rotation extends an established trend rather than starting one. Elsewhere among benchmarks, Toyota (7203) added 0.39% to 3,117, MUFG (8306) edged up 0.27%, Sony (6758) was flat at 4,135, and SoftBank Group (9984) slipped 0.30% with the tech complex.
Yen and Rates
USD/JPY firmed to around 157.2 in Monday trade, up on the day, keeping currency pressure in the frame four days before the Bank of Japan’s October 29–30 policy meeting, which comes with a quarterly Outlook Report. Investors are watching Governor Ueda for tightening signals, with the policy rate at 1.25% after the previous hike and core inflation still above the 2% target. JGBs, per MOF data from Friday’s session (October 23), rallied across the curve: the 10-year yield fell 7.7bp to 2.837%, the 5-year 6.6bp to 2.238%, and the 30-year 4.8bp to 3.904% — a bid for duration that sits a little awkwardly next to a 157 yen, and makes this week’s BOJ communication the obvious arbiter.
Positioning: Defensive and Expensive to Be Short
The TSE short-selling ratio — this site’s daily positioning signature — came in at 40.4% of Monday’s JPY 7.36 trillion turnover (33.0% under the price rule plus 7.4% unrestricted). That is in the upper third of the past eight sessions’ 32.9%–43.2% range, against an average of 39.5%: an elevated, defensive tape, consistent with the index making new three-month lows.
Yet shorting is getting costly. Per Friday’s JSF data (Monday’s figures are not yet published), 483 of 1,084 loanable issues — roughly 45% — carried gyaku-hibu premium charges, the extra daily fee short sellers pay when borrowed stock is scarce. That breadth is a squeeze-cost signal, not a short-selling flow. The Nikkei Volatility Index, meanwhile, eased 3.79 points to 34.46 but still sits at the 92nd percentile of the past 931 sessions — a stressed reading even on a down-volatility day.
Friday’s JSF margin balances showed leveraged longs trimming in places — Toyota margin-loan balances fell 187,200 shares while its stock-lending (short-side) balance rose 18,800 — but adding in others: MUFG margin loans grew by 106,200 shares and Advantest by 24,400, suggesting retail leverage is still leaning into the chip drawdown. Separately, JPX’s large disclosed short positions (regulatory filings reported with a lag, not today’s selling) remain concentrated in TOWA (16.4% of shares outstanding across five positions), KLab (12.3%) and SHIFT (10.2%). JSF restriction measures also carry an energy-and-commodities flavor: a caution alert on the WTI crude ETF (1671) was notified Monday, and new-application suspensions hit the gold-linked ETF (1328) and Takara Holdings (2531) in recent days.
Weekly Flows
MOF’s weekly cross-border securities data for October 11–17 (designated major reporters — a different reporting basis from JPX investor-type figures, so direction matters more than the exact amount) showed foreign investors as net sellers of Japanese equities to the tune of JPY 0.07 trillion, while Japanese residents net bought JPY 0.13 trillion of foreign equities. These are last week’s flows, not Monday’s, but the modest foreign selling is consistent with the cautious pre-BOJ tape.
What to Watch
- BOJ, October 29–30. The decision plus Outlook Report, with USD/JPY around 157.2 and the JGB curve rallying into the meeting — the week’s dominant event.
- Semis and machinery. Electric & precision is down 4.9% and machinery 6.3% over five days; whether those groups stabilize will decide if the Nikkei–TOPIX divergence narrows or widens.
- Positioning stress. A 40.4% short-sale ratio, gyaku-hibu charges on 45% of loanable issues, and a 92nd-percentile Nikkei VI leave the tape primed to move sharply on the BOJ outcome in either direction.
Disclaimer: This is an information and analysis publication, not investment advice. See our Methodology for data sources, standards, and our corrections policy.