Tokyo, Friday, July 24, 2026 — The Nikkei 225 fell 2.73% to 64,611.15, its decline driven almost entirely by the semiconductor and AI-linked complex after disappointing capital-expenditure signals from U.S. tech earnings. The damage was narrow but severe: Disco collapsed 12.27% on 3.2x average volume, SoftBank Group lost 7.06%, Advantest fell 6.02% and Tokyo Electron 4.99%, while local reports put Kioxia down roughly 9.5%. The TOPIX proxy fell a much shallower 1.09%, and 7 of 17 sectors actually advanced — this was a rotation out of AI beta, not a wholesale liquidation. The yen offered no cushion, with USD/JPY closing at 163.73, near multi-decade lows.
The Tape
| Instrument | Close | Change |
|---|---|---|
| Nikkei 225 | 64,611.15 | -2.73% |
| TOPIX (1306 ETF proxy) | 417.50 | -1.09% |
| USD/JPY | 163.73 | +0.40% |
| Nikkei Volatility Index | 32.88 | -1.94 |
| 10y JGB (MOF, Thu 7/23) | 2.776% | +3.1bp |
AI Beta Sold, Defensives Bought
The trigger was overnight: the S&P 500 fell 1.21% Thursday as reports from Alphabet and Tesla revived anxiety about the cash burn behind AI infrastructure buildouts. Tokyo’s chip equipment names — this market’s most direct AI expression — took the hit at the open and never recovered. Notably, SoftBank Group’s 7% slide came on just 0.8x its 20-day average volume, and Renesas fell 6.45% on 0.7x — sellers did not need much volume to move prices, a sign of thin risk appetite rather than panic distribution. Disco was the exception, with genuinely heavy turnover behind its 12% drop.
The other side of the ledger was classic defense. Among TOPIX-17 ETF proxies (which can deviate slightly from official sector indices), Pharmaceuticals led at +2.37% — Chugai gained 2.83% and Takeda 2.60% within our 95-name large-cap universe — followed by Financials ex-Banks (+1.44%) and Power & Gas (+0.92%). Seven & i (+3.17%), NYK Line (+2.22%) and Oriental Land (+2.00%) topped the large-cap gainers, and MUFG eked out +0.11% with JGB yields still grinding higher across the curve (2y at 1.499%, 30y at 3.929% as of Thursday’s MOF marks). Laggards were exactly where you would expect: Electric & Precision -2.36%, Chemicals -2.29%, Autos -2.12%, with Toyota off 1.80%.
Positioning: Shorting at the Top of Its Range
Our daily signature stat: short sales accounted for 43.8% of total TSE trading value on Friday (31.1% under the price rule plus 12.7% unrestricted), on turnover of JPY 9.19 trillion. That is the very top of the last eight sessions’ 31.9%–43.8% range, versus a 38.5% average — an unambiguously defensive tape, with traders leaning hard into hedges and downside bets as the chip complex broke down.
Two nuances argue against reading this as the start of a rout. First, the Nikkei Volatility Index actually fell 1.94 points to 32.88 on the day — still stressed at the 90th percentile of the past 870 sessions, but not spiking. Second, squeeze pressure on existing shorts remains widespread: per Thursday’s JSF data (today’s figures are not yet published), 471 of 1,085 loanable issues carried gyaku-hibu premium charges — an extra daily cost short sellers are paying — covering roughly 43% of the loanable universe. Crowded shorts are expensive to hold here.
In the standardized margin data (also Thursday’s), leveraged long demand far outweighs borrowed stock: JPY 0.59 trillion in loans for margin buying versus JPY 0.20 trillion of stock lending. MUFG saw a notable +462,000-share jump in margin-loan balances — leveraged longs adding into the financials bid — while SoftBank Group’s margin-loan balance shrank by 116,200 shares. Separately, JPX’s large disclosed short positions (lagged regulatory filings, not today’s selling) show concentration in names like Sanrio (10.7% of shares outstanding across five positions) and Unitika (10.5%) — positioning context, not a driver of Friday’s move.
Weekly Flows
For the week of July 13–17 (JPX investor-type data, published with a lag — these are not today’s flows), foreign investors were net buyers of JPY 0.52 trillion of TSE Prime equities, while individuals net sold JPY 0.10 trillion. A caveat: MOF’s cross-border securities data for the overlapping July 12–18 week, compiled on a different reporting basis, showed foreigners as marginal net sellers (JPY 0.08 trillion) — the two series disagree on direction this week, so treat the foreign-buying signal as tentative. Retail leverage was little changed: margin buying balances (Tokyo+Nagoya, as of July 17) stood at JPY 6.71 trillion, down JPY 0.02 trillion on the week, against JPY 0.68 trillion of margin selling.
Macro Backdrop
Friday morning brought the scheduled release of June national CPI from the Statistics Bureau at 08:30 JST; we have not yet verified the printed figures against the official release, so we will hold off on citing specific readings here. The Bank of Japan is widely expected to hold rates at its upcoming meeting while reaffirming gradual normalization — the weak yen at 163.73, the fresh inflation data now in hand, and Brent crude pushing toward $100 on Middle East tensions all keep the pressure on. New U.S. tariffs of 10–12.5% on imports from over 80 trading partners added a further layer of trade uncertainty. Even so, local reports note both the Nikkei and TOPIX still finished the week modestly higher — roughly the first weekly gain in three weeks — which frames Friday as a sharp giveback within a stabilizing month rather than a fresh leg down.
What to Watch
- BoJ meeting signals: with Friday’s June CPI release now in hand and the yen at 163.73, any hardening of the ‘gradual normalization’ language matters most for banks and the long end of the JGB curve.
- AI capex follow-through: S&P 500 futures were up 0.12% overnight — whether U.S. tech stabilizes will determine if Friday’s chip-sector damage (Disco on 3.2x volume) extends or gets bought.
- The short-sell ratio: at 43.8% it sits at the top of its eight-session range; a retreat toward the 38.5% average would signal hedges being unwound, while persistence up here — with 43% of loanable issues already paying gyaku-hibu premiums — raises squeeze potential on any bounce.
Disclaimer: This is an information and analysis publication, not investment advice. See our Methodology for data sources, standards, and our corrections policy.