The Day’s Story: A Run at 70,000
The Nikkei 225 closed Monday at 69,946.86, up 2.40% and within sight of the 70,000 threshold, marking a fresh three-month high. The broader market participated but with less force — our TOPIX proxy (the 1306 ETF) added 1.42% to 436.30 — a gap that tells you exactly where the buying was concentrated: large-cap technology.
Two external supports did the heavy lifting. Friday’s Wall Street session was constructive, with the S&P 500 up 0.73% to 7,722.72 on mega-cap tech strength, and weaker-than-expected US nonfarm payrolls cooled expectations of further Fed tightening. Meanwhile the yen stayed quiet: USD/JPY was quoted around 157.8, slightly softer on the day, consolidating in a roughly 157.40–158.20 intraday band. A stable yen near 158 is comfortable territory for exporters, though it keeps the market alert to intervention chatter as the 160 level looms.
Semis Lead, Defensives Lag
Chip equipment was the engine. Tokyo Electron rose 5.50% to 12,765 and Advantest gained 4.32% to 40,300, supported by continued AI infrastructure spending. Among our tracked large-cap universe, the top movers were even more emphatic: Renesas jumped 8.03% on 1.9x average volume, TDK 7.79% on 2.2x volume, Disco 5.71%, and Kyocera 5.10%. SoftBank Group added 2.96% to 6,497. Fast Retailing’s 4.07% gain gave the price-weighted Nikkei an extra push.
Outside tech, MUFG rose 2.00% to 3,615 as banks benefited from the risk-on tone and Japan’s elevated rate backdrop, and Toyota added 1.30% to 2,893.50. Sony was a rare blue-chip decliner, down 0.80%.
The sector tape (TOPIX-17 ETF proxies, which can deviate slightly from official indices) showed 12 of 17 sectors advancing. Electric & Precision led at +2.98% — now up 7.0% over five sessions — followed by Raw Materials & Chemicals (+2.56%) and Machinery (+1.94%). The laggards were classic rotation casualties: Power & Gas fell 1.20%, Real Estate 0.83%, and Energy Resources 0.54%, each down 3–4% on the week. Shionogi was the worst tracked large cap, off 4.49% on heavy volume.
Positioning: Shorts Ease Off
The TSE short-selling ratio — our daily signature stat — came in at 38.8% of total trading value (32.4% under the price rule plus 6.4% unrestricted), on hefty turnover of JPY 8.72 trillion. That is the low end of the last three sessions’ 38.8%–41.1% range, against an average of 39.6%. Plainly: short sellers leaned in less than they have recently, consistent with a market pressing to new highs rather than fading it.
The latest Japan Securities Finance data (dated October 2 — Monday’s figures publish later) adds texture. Loans for margin buying, i.e. leveraged long demand, stood at JPY 0.63 trillion versus JPY 0.18 trillion of stock lending on the short side. Two single-name details stand out: SoftBank Group’s margin-loan balance swelled by 568,000 shares in one day — a build-up in leveraged long demand — while Tokyo Electron’s stock-lending balance fell by 128,800 shares, a pattern consistent with short covering into the semis rally. Squeeze costs remain broad: 386 of 880 loanable issues carried a gyaku-hibu premium, the extra daily fee short sellers must pay.
On the regulatory side, Monday’s large short-position disclosures (lagged position filings, not today’s selling) showed 996 reports across 679 issues. Notably, disclosed shorts in the Nikkei Double Inverse ETF (1357) rose 12.88pp to 15.8%, while the TOPIX-17 Machinery ETF (1624) saw a 28.54pp reduction — positioning being unwound in a sector that just rallied 4% on the week. The Nikkei Volatility Index ticked up to 22.87, its 51st percentile over the last 917 sessions — a normal reading, with no stress premium despite index highs.
Rates Backdrop
JGB yields (MOF, as of October 2) show the curve still drifting steeper at the long end: the 10-year at 3.097% (+0.5bp), the 30-year at 4.148% (+2.6bp) and the 40-year at 4.168% (+4.3bp), while the 2-year eased to 1.919%. With the BOJ having raised its policy rate to 1.25% in September, consensus favors a hold at the October 29–30 meeting.
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 JPY 0.73 trillion, while individuals net sold a modest JPY 0.05 trillion — the familiar pattern of foreigners driving the rally and domestic retail selling into it. A caveat: the separate MOF cross-border series for the later week of September 20–26 showed foreigners net selling JPY 0.36 trillion of Japanese equities. The two series use different reporting bases, so direction matters more than the amounts — but it hints the foreign bid may have cooled between those weeks. The next JPX release will arbitrate.
What to Watch
- October 9 options SQ: Nikkei 225 options settle in four sessions, with the index pressed right against the 70,000 strike zone — expect positioning noise into Friday.
- The yen and the BOJ: USD/JPY around 157.8 keeps intervention risk near 160 on the radar ahead of the October 29–30 meeting, where a hold is the consensus call.
- Short-ratio follow-through: whether the 38.8% short-sell ratio keeps falling — and whether Monday’s JSF data confirms more covering in semis names like Tokyo Electron — will show if skeptics are capitulating into the 70,000 test.
Disclaimer: This is an information and analysis publication, not investment advice. See our Methodology for data sources, standards, and our corrections policy.