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Key Takeaways

• The Nikkei 225 fell 1,253.40 points (1.82%) to 67,777.52 on 13 October 2026, its fourth straight loss, while the broader TOPIX rose 5.86 points.
• Tokyo Electron fell 7.20% and SoftBank Group 8.50% after China’s ChangXin Memory Technologies announced progress on a denser memory chip design.
• As of 09:10 (GMT+8) on 14 October 2026, the Nikkei225 traded at 68,004.43 on Vantage’s hourly chart, below both moving averages.

The Nikkei 225 closed 1.82% lower at 67,777.52 on 13 October 2026, its fourth straight daily loss. ^1,2 The twist: 1,140 Tokyo Prime Market stocks rose that day against 380 that fell, and the broader TOPIX finished 5.86 points higher at 4,110.67. ²

Nikkei news on Tuesday, including News On Japan’s report, centred on the 1,253-point fall. ² We pulled up the breadth figures and found a rotation instead: the headline and the breadth data were reading from different scripts.

That gap is what this piece unpacks: how a price-weighted Nikkei share index let a handful of chip stocks decide the day, and what that changes about the risk picture into US inflation data tonight and the Bank of Japan (BoJ) decision on 30 October.

As of 09:10 (GMT+8) on 14 October 2026, Vantage’s Nikkei225 CFD feed showed 68,004.43, about 0.33% above the cash index’s 13 October close; the cash Nikkei 225 index has a 52-week range of 46,544.05 to 72,831.73. ³ The 0.33% gap is our own calculation, and the Vantage price can differ from the cash index.

Why Did the Nikkei 225 Fall on 13 October?

The Nikkei 225 fell 1.82% to 67,777.52 on 13 October 2026 as steep declines in heavily weighted chip and AI shares, including SoftBank Group and Tokyo Electron, outweighed gains elsewhere. Because the index is price-weighted, a few heavyweights dragged it lower even as TOPIX rose.

Feature	Nikkei 225	TOPIX
Weighting Method	Share price, adjusted by Nikkei factors and a 10% weight cap	Free-float market capitalisation
Coverage	225 Prime Market stocks	Far wider slice of the Prime Market
13 October 2026 Close	67,777.52 (-1.82%)	4,110.67 (+5.86 points)
What Moved It	Declines in chip and AI names such as Tokyo Electron, SoftBank Group, and Kioxia	Gains in banks, insurers, and shipping companies

Table 1: Nikkei 225 versus TOPIX on 13 October 2026. Data from Nikkei Indexes, Nikkei Inc., Morningstar, and News On Japan, accessed on 14 October 2026.

The table shows where the pressure sat. The next question is why it landed on a Tuesday.

Chip Slide Met Tokyo’s Holiday Return

Tokyo spent the weekend on a three-day holiday, ² and the chip trade did not wait for it. Over that weekend, China’s ChangXin Memory Technologies (CXMT) announced progress on a denser memory chip design, ⁴ and the Philadelphia Semiconductor Index fell a combined 3.07% over the two US sessions Tokyo missed. ⁵ In Seoul on 13 October, SK Hynix fell more than 10% during the session, according to CNBC, ⁴ and the Kospi was down more than 6% at one stage. ²

The index opened 466 points lower and was 1,738.53 points down by the midday break. ⁵ SoftBank Group (TYO:9984) sank 8.50% and Tokyo Electron (TYO:8035) dropped 7.20%, CNBC reported, ⁴ while Kioxia Holdings (TYO:285A) also weakened. ² The chip trade had, in effect, been repriced over a long weekend without Tokyo in the room.

The obvious read is that CXMT has caught up with the memory giants. The evidence is thinner: Seoul Economic Daily reported that CXMT had not yet mass-produced the new design, with yields and customer certification still unverified. ⁶ Phillip Wool, chief market strategist at Rayliant Global Advisors, said the reaction looked out of proportion to the near-term threat, reading it more as “a sign of how vulnerable AI sentiment is at this moment”, according to CNBC. ⁴

That explains why chip stocks fell. It does not explain why the Nikkei 225 fell while most of Tokyo rose.

Price Weighting Split the Nikkei Index

The Nikkei 225 is a price-weighted average of 225 Prime Market stocks, ⁷ so a share with a big price tag generally moves it more than a larger company with a cheaper share. Nikkei scales each price with an adjustment factor and caps any stock that tops a 10% weight, so this is a simplification, but price still drives the weights. ⁸ Picture a vote where ballots count by share price, and chip names carry some of the heaviest: Advantest’s weight topped the 10% threshold at the end of July, so Nikkei trimmed its capping ratio from 0.9 to 0.8 from 1 October. ⁸

On 13 October, an 8.50% fall in SoftBank Group, a 7.20% drop in Tokyo Electron, and a 2.90% slip in Advantest left little room for the rest of the market to offset. ⁴ TOPIX, which spans far more of the Prime Market, rose as banks, insurers, and shipping companies gained ground. ²

Those gains matched the interest rate backdrop. The BoJ raised its policy rate to 1.25% at its 17 to 18 September meeting, with the new rate effective from 24 September, ⁹ and News On Japan linked the strength in financials to higher rates and a rotation out of expensive growth shares. ² Money appeared to move around inside Tokyo rather than leave it.

We have seen the mirror image before. On 1 October, the Nikkei 225 rose 3.30% while decliners outnumbered gainers 157 to 68 among its constituents during the session, according to Reuters figures cited by BBN Times. ¹⁰ Vantage has not independently verified that count.

On both 1 and 13 October, the headline index followed a narrow group of chip stocks while breadth pointed the other way. For anyone following the Nikkei market index, that concentration is a risk in its own right.

On 13 October, the Nikkei 225 lost 1,253 points while nearly three in four Prime Market stocks rose.

Rotation explains the session. The hourly chart shows what it left behind.

Nikkei Index Today: Price Steadies, Momentum Resets

On Vantage’s hourly Nikkei225 chart, the index peaked near 71,300 on 6 October and fell in stages to a low near 67,100 in the 13 October session, roughly 6% lower. That high sits above the cash index’s 70,798.62 peak on 6 October ³ because the Vantage price also trades outside Tokyo hours. By 09:10 (GMT+8) on 14 October 2026, it had clawed back about 900 points to trade between roughly 67,700 and 68,150.

Price sat just below the 50-period moving average at 68,272.70 and further below the 200-period average at 69,180.55. Moving averages, as usual, caught up with the news a few hours after price did.

Momentum is the more interesting read. On the TradingView setup used for this analysis, the 14-period Relative Strength Index (RSI), one of the common technical indicators, fell to about 16 at the 13 October low after sitting near 80 on 6 October. At the 09:10 (GMT+8) cut-off it read 49.69, with its signal line at 47.23: momentum has reset to neutral while price has recovered only part of the drop.

Nikkei225 H1 Levels Traders Are Watching, as of 09:10 (GMT+8), 14 October 2026

Level	Reading	What It Marks
Upper Reference	Near 71,300	6 October hourly high
200-Period Moving Average	69,180.55	Slower average on the H1 chart
50-Period Moving Average	68,272.70	Faster average, just above the cut-off price
Cut-Off Price	68,004.43	Last traded at 09:10 (GMT+8)
Lower Reference	Near 67,100	13 October hourly low

Table 2: Levels read from Vantage’s Nikkei225 H1 chart on TradingView, as of 09:10 (GMT+8) on 14 October 2026. Indicative only, not signals.

With momentum back at neutral, the calendar now carries more of the story.

Nikkei 225 News to Watch Into the BoJ

Here is the checklist we are tracking for the next chapter of Nikkei 225 news, with all times in GMT+8:

• US Consumer Price Index (CPI), 14 October, 20:30: September inflation lands overnight in Asia and can shift chip valuations and the dollar-yen rate.
• Kospi and US Chip Shares, Daily: News On Japan noted that overseas investors increasingly treat Japanese chip equipment, Korean memory, and US AI shares as one trade, ² so Seoul and US chips are the first reads for Asian markets.
• The Yen Near 158, Daily: The yen traded around 158 per dollar on 13 October, ² and USDJPY moves feed into the yen value of exporters’ overseas earnings.
• Japan Earnings Season, Late October: On 7 October, Yoshihiko Tabei, head of investment research at Naito Securities, said “there is strong interest in confirming earnings” ahead of the season. ¹¹
• BoJ Decision and Outlook Report, 30 October: Fresh growth and inflation forecasts land with the decision. ²

Three quick questions follow from all of this.

Nikkei 225 Today News: Quick Answers

What Is the Nikkei Index Today?

As of 09:10 (GMT+8) on 14 October 2026, Vantage’s Nikkei225 price sat at 68,004.43. The cash Nikkei 225 last closed at 67,777.52 on 13 October. ¹

Is the Nikkei Stock Market Falling or Rotating?

On 13 October the data pointed to rotation: TOPIX rose and 1,140 Prime Market stocks gained while the Nikkei 225 fell. ² Same exchange, different arithmetic.

What Does Price Weighting Mean for Nikkei 225 Traders?

A move in a few expensive shares can swing the whole Nikkei market index, in either direction.

That last point is where the risk picture starts.

Gap Risk Around a Narrow Index

Tuesday opened with a contradiction: a falling Nikkei 225 on top of a rising market. The breadth figures resolve it, since the loss came from a narrow group of heavily weighted chip names. The read changes if declines spread into banks, exporters, and domestic names, which would show up first as TOPIX falling alongside the Nikkei 225.

Sessions like 13 October show how fast a narrow index can move, and a reopening after a holiday can gap price past a planned exit level. A Stop Loss can limit losses to a planned size in normal conditions, but in a fast or gapping market it may be filled at a worse price than the one set, so it reduces exposure rather than removing it.

Index CFDs on the Nikkei 225 are traded on margin, and leverage is double-edged: it magnifies losses as well as gains. As an illustration only, at 1:20 leverage the 1.82% fall of 13 October equals about 36.40% of the margin posted. Position sizing relative to account equity is one way traders frame that exposure, and Vantage’s guide to negative balance protection sets out what it covers and where it stops; neither removes the underlying risk of trading leveraged products.

RISK WARNING: CFDs are complex financial instruments and carry a high risk of losing money rapidly due to leverage. You should ensure you fully understand the risks involved and carefully consider whether you can afford to take the high risk of losing your money before trading.

Disclaimer: The information is provided for educational purposes only and doesn’t take into account your personal objectives, financial circumstances, or needs. It does not constitute investment advice. We encourage you to seek independent advice if necessary. The information has not been prepared in accordance with legal requirements designed to promote the independence of investment research. No representation or warranty is given as to the accuracy or completeness of any information contained within. This material may contain historical or past performance figures and should not be relied on. Furthermore estimates, forward-looking statements, and forecasts cannot be guaranteed. The information on this site and the products and services offered are not intended for distribution to any person in any country or jurisdiction where such distribution or use would be contrary to local law or regulation.

References

[1] “Nikkei 225 Average PR JPY – Morningstar” https://www.morningstar.com.au/investments/security/index/100000018 Accessed on 14 October 2026.

[2] “Nikkei Falls 1,253 Points as AI and Chip Selloff Hits Tokyo – News On Japan” https://newsonjapan.com/article/151035.php Accessed on 14 October 2026.

[3] “Nikkei 225 Historical Data (N225) – Investing.com” https://www.investing.com/indices/japan-ni225-historical-data Accessed on 14 October 2026.

[4] “Micron Sinks, Other Memory-Linked Names Dip for a Second Day – CNBC” https://www.cnbc.com/2026/10/13/sk-hynix-softbank-samsung-electronics-shares-tech-stocks-fall.html Accessed on 14 October 2026.

[5] “Nikkei Stock Average Ends Morning Session Down More Than 1,700 as Semiconductor Stocks Get Hammered – BigGo Finance” https://finance.biggo.com/news/83549476-53d9-41a3-be90-ed7497eb63eb Accessed on 14 October 2026.

[6] “Samsung, SK hynix Tumble as China Memory Threat Spooks Investors – Seoul Economic Daily” https://en.sedaily.com/finance/2026/10/13/samsung-sk-hynix-tumble-as-china-memory-threat-spooks Accessed on 14 October 2026.

[7] “Nikkei Stock Average (Nikkei 225) – Nikkei Indexes” https://indexes.nikkei.co.jp/en/nkave/index/profile Accessed on 14 October 2026.

[8] “Regarding the Capping Ratio of Advantest in Nikkei 225 – Nikkei Inc.” https://indexes.nikkei.co.jp/nkave/archives/news/20260731E_1.pdf Accessed on 14 October 2026.

[9] “Amendment to Principal Terms and Conditions of Complementary Deposit Facility – Bank of Japan” https://www.boj.or.jp/en/mopo/mpmdeci/mpr_2026/mpr260918b.pdf Accessed on 14 October 2026.

[10] “Nikkei 225 Soars 3.30% to 68,956.72, Highest Close Since 17 August, as Micron Ignites Japan’s Chip Stocks – BBN Times” https://www.bbntimes.com/companies/nikkei-225-soars-3-30-to-68-956-72-highest-close-since-17-august-as-micron-ignites-japan-s-chip-stocks Accessed on 14 October 2026.

[11] “Japan’s Nikkei Falls Back, Holds 70,000 Level as Investors Lock In Profits on Semiconductor, Electronic Component Stocks – BigGo Finance” https://finance.biggo.com/news/d7123b55-c243-4bfc-959f-3f19fe1c2a8a Accessed on 14 October 2026.