Tokyo ended the week on the back foot. The Nikkei 225 fell 0.94% to 68,309.46 at Friday’s close, snapping a two-day winning streak as investors took profits in the semiconductor complex and SoftBank Group sold off hard. The TOPIX ETF proxy (1306) lost 0.97% to 430.20. The yen offered no offset, essentially flat at 157.58 per dollar, and only 2 of 17 TOPIX-17 sector proxies finished higher. The streak the market snapped had added more than 3,400 points to the benchmark over two sessions, leaving ample profits on the table to take.
The Day’s Tape
| Instrument | Close (Oct 2) | Change |
|---|---|---|
| Nikkei 225 | 68,309.46 | -0.94% |
| TOPIX (1306 ETF proxy) | 430.20 | -0.97% |
| USD/JPY | 157.58 | +0.01% |
| Nikkei Volatility Index | 22.58 | -0.34 (49th %ile — normal) |
The defining single-name story was SoftBank Group (9984), down 5.83% to 6,310 — the steepest decline in our fixed 95-name large-cap universe. Notably, the slide came on below-average volume (0.8x the 20-day average), suggesting an absence of buyers as much as aggressive selling.
Chip names consolidated after surging earlier in the week on Micron’s earnings. Tokyo Electron (8035) fell 3.82% to 12,100, while Advantest (6857) bucked the trend entirely, rising 2.71% to 38,630 on 1.7x average volume — the standout gainer in that large-cap universe. Elsewhere in the universe, Nissan (7201) dropped 4.97% on heavy 2.6x volume, Terumo lost 4.59% and Shiseido 4.31%. Toyota (7203) fell 2.34% to 2,856.50, Fast Retailing (9983) shed 1.35% to 71,770, and MUFG (8306) eased 1.17%. Sony (6758) was a relative outperformer, down 0.90%.
Positioning: Shorts Still Heavy
Our daily signature stat: short sales accounted for 41.1% of total TSE trading value on Friday (33.2% under the price rule plus 7.9% unrestricted), on turnover of ¥9.13 trillion. That is the top of the recent two-session range and comfortably elevated — a defensive tape, with hedging and outright shorting absorbing a large share of flow.
The Japan Securities Finance data (Thursday’s figures — Friday’s are not yet published) tells a layered story. Stock-lending balances — shares borrowed for shorting — rose at Tokyo Electron (+47,500 shares) and Advantest (+24,800), so shorts were leaning into the chip names before Friday’s session; it worked at TEL, not at Advantest. On the other side of the ledger, MUFG’s margin-loan balance — leveraged long demand — jumped by just over 1.0 million shares, while SoftBank’s stock-lending balance actually fell 42,400 shares into the drop. Meanwhile, 405 of 942 loanable issues (about 43%) incurred gyaku-hibu premium charges, meaning short sellers across a broad swath of the market are paying an extra daily cost to hold positions — a persistent squeeze-cost signal.
Separately, JPX published 935 large disclosed short-position filings across 642 issues on Friday. These are lagged regulatory positioning reports, not today’s selling: the largest increase versus prior reports was at KOKUSAI ELECTRIC (6525), up 2.13 percentage points.
Sectors
Using TOPIX-17 ETF proxies (which may deviate slightly from official indices), breadth was poor: 2 of 17 sectors advanced. Steel & Nonferrous led again, up 2.29% on the day and 6.1% over five sessions, with Energy Resources adding 0.82%. The laggards were rate- and cycle-sensitive: Real Estate -2.67%, Autos & Transport Equipment -2.31%, and Financials ex-Banks -2.22%.
Weekly Flows
The latest JPX investor-type data covers the week of September 7–11 — weekly figures published with a lag, not today’s flows. Foreign investors were net buyers of TSE Prime equities to the tune of ¥0.73 trillion, while individuals net sold ¥0.05 trillion. A caveat from a more recent but differently-based source: MOF cross-border data for the week of September 20–26 shows foreigners net selling ¥0.36 trillion of Japanese equities, suggesting the foreign bid may have cooled since the JPX reference week. Direction matters more than the exact amounts given the differing reporting bases.
Rates and Macro
The JGB curve (MOF, October 1) sits at 1.939% in 2-years, 3.092% in 10-years and 4.122% in 30-years. The policy backdrop keeps pressing: Tokyo core CPI accelerated to 2.7% year-on-year in September, a 10-month high and well above the BOJ’s 2% target, firming December rate-hike expectations. Economy Minister Minoru Kiuchi said Japan has moved past deflation and no longer needs excessively loose policy, and the September Tankan showed large-manufacturer sentiment improving for a sixth straight quarter. Against that, the Nikkei VI at 22.58 (49th percentile of the past 916 sessions) says the options market still reads this as a normal pullback, not stress. Overnight S&P 500 futures were constructive at +0.41%.
What to Watch
- BOJ December expectations — with Tokyo core CPI at a 10-month high and Minister Kiuchi talking down excessively loose policy, further confirmation of a December hike would keep pressure on rate-sensitive sectors like Friday’s laggards.
- Foreign flows — the MOF cross-border data hints the foreign bid has cooled since the JPX reference week; upcoming weekly investor-type figures will confirm or refute that.
- Positioning persistence — whether the short-sell ratio holds above 40% and gyaku-hibu breadth stays near 43% of loanable issues; both easing together would signal the defensive crouch is unwinding.
Disclaimer: This is an information and analysis publication, not investment advice. See our Methodology for data sources, standards, and our corrections policy.