The Session: A Deep Morning Hole, Quietly Refilled
Friday’s tape was defined by the recovery, not the close. The Nikkei 225 finished at 69,030.92, down a mere 11.19 yen (-0.02%) — its third consecutive daily decline on paper, but a very different story intraday: the index plunged as much as 892 yen in the morning after Wall Street’s tech-led selloff, then spent the afternoon grinding back as dip-buyers absorbed the supply. Nikkei 225 options SQ settlement fell on today’s session, adding mechanical flows to the open.
The overnight setup was unambiguous. On October 8 the Philadelphia Semiconductor Index sank 3.39% and the S&P 500 lost 0.47% to 7,765.36 in a tech-led selloff that put Tokyo’s chip complex squarely in the firing line at the open. S&P 500 futures bounced 0.43% to 7,849.75 in the overnight setup, which helped the afternoon repair job.
The broader market was firmer than the headline index: the TOPIX-tracking 1306 ETF gained 0.70%, reflecting rotation into non-tech domestic shares. USD/JPY held a tight 157.80–158.37 range to finish at 158.31 (+0.16%), with trading subdued ahead of Japan’s three-day holiday weekend.
Single Stocks: Two Heavyweights Down, Chip Gear Reverses Up
Two index heavyweights did the damage. Fast Retailing (9983) dropped 4.04% to 71,780 yen on heavy turnover — 1.8x its 20-day average volume — making it the session’s biggest drag on the headline index alongside SoftBank Group (9984), which fell 3.92% to 5,803 yen, extending its recent run of weakness.
The chip-equipment complex, the morning’s presumed victim, reversed to lead the recovery. From our fixed 95-name large-cap universe (not a full-market scan):
| Gainers | Losers |
|---|---|
| Lasertec (6920) +4.18% | Nidec (6594) -6.07% |
| SCREEN (7735) +3.99% (1.5x avg volume) | Fast Retailing (9983) -4.04% (1.8x avg volume) |
| Japan Tobacco (2914) +3.88% (2.2x avg volume) | Renesas (6723) -4.00% |
| Nintendo (7974) +3.76% | Asahi Kasei (3407) -3.94% |
| Recruit (6098) +3.23% | SoftBank Group (9984) -3.92% |
Tokyo Electron (8035) closed up 2.09% at 12,445 and Advantest (6857) up 1.66% at 41,610 after afternoon dip-buying absorbed the early losses. Sony (6758) added 2.91%. Toyota (7203) trimmed early losses to finish up 0.29%. MUFG (8306) slipped 1.20%.
Sectors: Defensives Bid, Banks Sold
By TOPIX-17 ETF proxies (which may deviate slightly from official sector indices), 9 of 17 sectors advanced. Foods led at +2.30% (5-day +3.2%) — a defensive tilt consistent with the morning’s scare — followed by Raw Materials & Chemicals +1.25% and IT & Services +0.98%. Banks were the clear laggard at -1.59%, now down 3.1% over five sessions, with Retail (-1.08%, dragged by Fast Retailing) and Pharmaceuticals (-0.96%) also lower.
Positioning: Shorting Active but Not Extreme, Leveraged Longs Buying the Dip
Short selling accounted for 40.3% of TSE trading value on Friday (33.4% under the price rule plus 6.9% unrestricted) on total turnover of JPY 8.79 trillion. That is an elevated, defensive reading in absolute terms, but it sits in the middle third of the last seven sessions’ 38.0%–41.6% range (average 39.9%) — persistent hedging rather than a fresh extreme. The Nikkei Volatility Index ticked up 0.55 to 30.14, its 83rd percentile over the past 921 sessions.
JSF margin data for Thursday, October 8 (the previous session; today’s figures are not yet published) show leveraged longs leaning into weakness: loans for margin buying rose sharply in Tokyo Electron (+360,300 shares), MUFG (+783,300) and SoftBank Group (+368,300). On the short side, Advantest’s stock-lending balance fell 43,000 shares — borrowed shares being returned, i.e. covering. Squeeze costs remain broad: 389 of 884 loanable issues (44%) incurred gyaku-hibu premium charges, the extra daily fee short sellers pay when borrow is tight.
Among JPX large disclosed short positions — regulatory filings published with a lag, describing positioning rather than today’s selling — 840 reports covered 596 issues, with ReYuu Japan (10.3%) and TOWA (10.2%) carrying the largest aggregate disclosed shorts, and akippa showing the biggest increase versus prior reports (+2.08pp).
Weekly Flows
The latest JPX investor-type data (TSE Prime, value basis, week of September 7–11 — weekly figures, not today’s flows) showed foreign investors net buyers of JPY 0.73 trillion while individuals net sold JPY 0.05 trillion. The more recent MOF cross-border series (week of September 27–October 3, a different reporting basis where direction matters more than the exact level) corroborates the trend: foreigners net bought JPY 2.19 trillion of Japanese equities, while Japanese residents net bought JPY 1.32 trillion of foreign equities.
Rates Backdrop
JGB yields eased across the curve as of Thursday’s MOF marks: the 10-year at 3.089% (-2.2bp), the 2-year at 1.936% (-1.5bp), the 30-year at 4.136%. The market has absorbed the BOJ’s 1.25% policy rate from September and is now watching Governor Kazuo Ueda’s upcoming appearances for cues on further hikes.
What to Watch
- BOJ signals: Governor Ueda’s appearances ahead of the October 29–30 Monetary Policy Meeting and Outlook Report, with USD/JPY sitting at 158.31.
- The chip complex after the weekend: whether Friday’s afternoon recovery in chip equipment holds when Tokyo reopens after the three-day holiday, with S&P futures (+0.43%) offering a tentatively constructive handoff.
- Banks: a -3.1% five-session slide in the sector proxy alongside a sharp rise in MUFG margin-loan balances — contrarian dip-buying meeting continued selling pressure.
Disclaimer: This is an information and analysis publication, not investment advice. See our Methodology for data sources, standards, and our corrections policy.