The Day’s Story: A First Close Above 70,000 Since July
The Nikkei 225 closed Tuesday at 70,683.98, up 1.05%, its first close above the 70,000 threshold since early July — Monday’s session had stalled just beneath the line. The setup was familiar: a firm Wall Street lead (S&P 500 +0.66% to 7,773.95 in the prior U.S. session, with futures adding another 0.23% overnight), relentless AI and semiconductor momentum, and a softer yen — USD/JPY finished the Tokyo session at 158.19, up 0.29%, pressured after reports that the GPIF has held no recent discussions on portfolio reallocation. TOPIX, tracked via the 1306 ETF proxy, added 0.94% to 440.40.
The notable dissenter was SoftBank Group (9984), down 3.11% to 6,295. No clear catalyst for the drop was evident in Tuesday’s news flow, and the decline came on just 0.5x its 20-day average volume — a drift lower rather than a rush for the exit. Elsewhere among the mega-caps, Advantest (6857) jumped 3.85% to 41,850, Toyota (7203) rose 1.28% to 2,930.50, Sony (6758) added 1.21%, MUFG (8306) gained 1.55%, and Fast Retailing (9983) rose 1.20%. Tokyo Electron (8035) lagged its testing peer, up just 0.31%.
One caution flag on an otherwise constructive tape: the Nikkei Volatility Index jumped 6.33 points to 29.20, its 79th percentile over the past 918 sessions. Index hedging demand is rising into Friday’s options SQ even as cash equities grind higher.
Sectors and Movers
Breadth was solid — 15 of 17 TOPIX-17 sectors advanced (figures via Nomura NEXT FUNDS ETF proxies, which can deviate slightly from official sector indices):
| Sector | Day | vs TOPIX | 5-day |
|---|---|---|---|
| Steel & Nonferrous | +3.03% | +2.09pp | +11.1% |
| Autos & Transport Eqpt | +2.03% | +1.09pp | +0.6% |
| Banks | +2.02% | +1.08pp | +2.7% |
| Foods | -0.19% | -1.13pp | +1.1% |
| IT & Services, Others | +0.00% | -0.94pp | +1.4% |
| Real Estate | +0.04% | -0.90pp | -2.0% |
Steel & Nonferrous is now up 11.1% over five sessions — the standout momentum trade on the board. Within our fixed 95-name large-cap universe (not a full-market scan), TDK (6762) led at +5.25% on heavy 2.9x average volume, followed by Advantest, Shionogi (4507, +3.83%), Sysmex (+3.49%) and Renesas (+3.44%). On the downside, Mitsubishi Heavy (-2.17%) and Shiseido (-1.68%) joined SoftBank among the few decliners.
Positioning: Short-Sell Ratio Eases Off the Defensive Highs
Short sales accounted for 38.0% of Tuesday’s JPY 8.20 trillion in TSE trading value (31.1% under the price rule, 6.9% unrestricted). That sits in the lower third of the past four sessions’ range of 38.0%–41.1% (average 39.2%) — still an elevated reading by any absolute standard, meaning a defensive undertone persists, but the direction is toward less hedging pressure as the index pushes through 70,000.
Beneath the surface, Japan Securities Finance data for the previous session (Monday, October 5 — Tuesday’s figures are not yet published) showed a recurring pattern in most of the tracked mega-caps: shares borrowed for shorting ticked up while leveraged long balances were trimmed. SoftBank’s stock-lending balance rose 24,500 shares as margin-loan balances fell 353,800; Tokyo Electron and MUFG showed the same shape. Sony was the exception — its stock-lending balance also rose, but its margin-loan balance edged slightly higher rather than lower. Where the pattern held, that is short-side interest building into strength and margin longs taking profits — a mild contrarian tension worth tracking. Squeeze costs remain broad: 386 of 961 loanable issues carried gyaku-hibu premium charges, the extra daily fee short sellers pay when borrow is tight.
On the regulatory side, JPX published 789 large disclosed short-position reports across 574 issues on Tuesday. These are lagged position filings, not today’s selling — the largest change was Makino Milling Machine (6135), where disclosed shorts fell 2.67pp versus prior reports.
Rates and the Yen
The JGB curve steepened at the long end as of Monday’s (October 5) MOF marks, the latest available and one session behind the equity close: the 10-year eased 1.2bp to 3.085%, while the 30-year rose 1.8bp to 4.166% and the 40-year 2.7bp to 4.195%. The headline rates story was the MOF lifting the coupon on newly issued 10-year JGBs to 3.1% — the highest in roughly 30 years. BOJ Governor Ueda signaled continued readiness for gradual hikes to anchor inflation at 2%, though consensus does not expect back-to-back moves at the October 30 meeting. With the yen at 158.19 and easing oil prices trimming import-cost pressure, the exporter complex retains its tailwind for now.
Weekly Flows
The latest TSE Prime investor-type data (week of September 7–11 — weekly figures published with a lag, not today’s flows) showed foreign investors as net buyers of JPY 0.73 trillion, against modest net selling of JPY 0.05 trillion by individuals. A caveat: the MOF’s separate cross-border securities data for the later week of September 20–26 showed foreigners net selling JPY 0.36 trillion of Japanese equities on a different reporting basis. The two series disagree on direction across those different windows, so treat the foreign-buying narrative as unconfirmed for recent weeks until the JPX data catches up.
What to Watch
- Friday’s options SQ (October 9): with the Nikkei VI up sharply to 29.20 and squeeze costs broad, settlement week could be noisy around the 70,000 handle.
- The JSF borrow pattern: if stock-lending balances keep building against falling margin-long balances in the mega-caps, watch whether shorts press or get squeezed on any further advance.
- BOJ path into October 30: Ueda’s gradual-hike messaging, the 3.1% ten-year coupon, and a yen at 158 keep rate expectations central for banks and exporters alike.
Disclaimer: This is an information and analysis publication, not investment advice. See our Methodology for data sources, standards, and our corrections policy.