4493 Cyber Security Cloud,Inc.サイバーセキュリティクラウドTSE Growth / Information & Communication
0 posts
Cyber Security Cloud,Inc. stock plunged on Oct 28: what happened
It closed at ¥3,165 on Oct 28 (−¥385, −10.85%), ranking #24 among the top losers of all stocks on the Tokyo Stock Exchange.
No disclosures were found for this stock around that day. Share what you know in the posts below.
Changes are calculated from the closing prices this site collects daily; limit-up/down is an estimate based on the daily price limit. Please make your own investment decisions.
Cyber Security Cloud,Inc. (4493) at a glance
Prices are from Yahoo! Finance and may be delayed. Always check the latest price before trading.
Cyber Security Cloud,Inc. (4493) Stock Price History
Cyber Security Cloud,Inc. closed at ¥2,946 on Oct 30, 2026, +49.8% over 1 month, +55.2% over 1 year.
If you had invested ¥100,000 1 month ago, it would be worth ¥149,771 today (+49.8%).Price change only; dividends and fees are not included.
Over the same period the Nikkei 225 moved −5.2%, while this stock moved +49.8%.
Last 10 Trading Days
| Date | Close | Change | % Change |
|---|---|---|---|
| Oct 30 (Fri) | ¥2,946 | −154 | −4.97% |
| Oct 29 (Thu) | ¥3,100 | −65 | −2.05% |
| Oct 28 (Wed) | ¥3,165 | −385 | −10.85% |
| Oct 27 (Tue) | ¥3,550 | +80 | +2.31% |
| Oct 26 (Mon) | ¥3,470 | +20 | +0.58% |
| Oct 23 (Fri) | ¥3,450 | −415 | −10.74% |
| Oct 22 (Thu) | ¥3,865 | +700 | +22.12% |
| Oct 21 (Wed) | ¥3,165 | +145 | +4.80% |
| Oct 20 (Tue) | ¥3,020 | −320 | −9.58% |
| Oct 19 (Mon) | ¥3,340 | −470 | −12.34% |
If you had invested ¥100,000 3 months ago, it would be worth ¥165,042 today (+65.0%).Price change only; dividends and fees are not included.
Over the same period the Nikkei 225 moved +2.3%, while this stock moved +65.0%.
Last 10 Trading Days
| Date | Close | Change | % Change |
|---|---|---|---|
| Oct 30 (Fri) | ¥2,946 | −154 | −4.97% |
| Oct 29 (Thu) | ¥3,100 | −65 | −2.05% |
| Oct 28 (Wed) | ¥3,165 | −385 | −10.85% |
| Oct 27 (Tue) | ¥3,550 | +80 | +2.31% |
| Oct 26 (Mon) | ¥3,470 | +20 | +0.58% |
| Oct 23 (Fri) | ¥3,450 | −415 | −10.74% |
| Oct 22 (Thu) | ¥3,865 | +700 | +22.12% |
| Oct 21 (Wed) | ¥3,165 | +145 | +4.80% |
| Oct 20 (Tue) | ¥3,020 | −320 | −9.58% |
| Oct 19 (Mon) | ¥3,340 | −470 | −12.34% |
If you had invested ¥100,000 6 months ago, it would be worth ¥188,003 today (+88.0%).Price change only; dividends and fees are not included.
Over the same period the Nikkei 225 moved +6.8%, while this stock moved +88.0%.
Monthly Closes
| Month | Month-End Close | Monthly % |
|---|---|---|
| Oct 2026 | ¥2,946 | +49.8% |
| Sep 2026 | ¥1,967 | +1.4% |
| Aug 2026 | ¥1,940 | +6.5% |
| Jul 2026 | ¥1,821 | +3.5% |
| Jun 2026 | ¥1,760 | −4.3% |
| May 2026 | ¥1,839 | +17.4% |
| Apr 2026 | ¥1,567 | −5.0% |
If you had invested ¥100,000 1 year ago, it would be worth ¥155,216 today (+55.2%).Price change only; dividends and fees are not included.
Over the same period the Nikkei 225 moved +23.3%, while this stock moved +55.2%.
Monthly Closes
| Month | Month-End Close | Monthly % |
|---|---|---|
| Oct 2026 | ¥2,946 | +49.8% |
| Sep 2026 | ¥1,967 | +1.4% |
| Aug 2026 | ¥1,940 | +6.5% |
| Jul 2026 | ¥1,821 | +3.5% |
| Jun 2026 | ¥1,760 | −4.3% |
| May 2026 | ¥1,839 | +17.4% |
| Apr 2026 | ¥1,567 | −5.0% |
| Mar 2026 | ¥1,650 | −0.3% |
| Feb 2026 | ¥1,655 | −7.2% |
| Jan 2026 | ¥1,784 | −0.5% |
| Dec 2025 | ¥1,793 | −3.2% |
| Nov 2025 | ¥1,853 | −3.9% |
| Oct 2025 | ¥1,929 | ― |
If you had invested ¥100,000 3 years ago, it would be worth ¥142,871 today (+42.9%).Price change only; dividends and fees are not included.
Over the same period the Nikkei 225 moved +98.1%, while this stock moved +42.9%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | ¥2,946 | +64.3% |
| 2025 | ¥1,793 | ― |
If you had invested ¥100,000 5 years ago, it would be worth ¥115,394 today (+15.4%).Price change only; dividends and fees are not included.
Over the same period the Nikkei 225 moved +113.7%, while this stock moved +15.4%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | ¥2,946 | +64.3% |
| 2025 | ¥1,793 | ― |
If you had invested ¥100,000 in Mar 2020, it would be worth ¥111,803 today (+11.8%).Price change only; dividends and fees are not included.
Over the same period the Nikkei 225 moved +234.6%, while this stock moved +11.8%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | ¥2,946 | +64.3% |
| 2025 | ¥1,793 | −8.5% |
| 2024 | ¥1,960 | −10.3% |
| 2023 | ¥2,185 | +27.6% |
| 2022 | ¥1,712 | +0.8% |
| 2021 | ¥1,699 | −50.2% |
| 2020 | ¥3,410 | ― |
Daily, weekly and monthly closes (Yahoo! Finance, split-adjusted, dividends excluded). "All" covers the range Yahoo provides (from Mar 2020). Please check the latest prices before trading.
Cyber Security Cloud,Inc. (4493) financial indicators
PER, ROE and dividend yield are based on company forecasts, calculated from earnings reports and the closing price after each trading day.
Cyber Security Cloud,Inc. in Kabutaro's Daily Blog
- Oct 6, 2026 Japan Stock of the Day: On October 6, 2026, the most talked-about Japanese stock online was BroadBand Security <4398>.
Days when Kabutaro's daily blog featured this stock.
Posts
This board is shared with the Japanese and Chinese versions. Feel free to write in English, Chinese or Japanese.
No posts yet. Be the first to write something.
Write on the Cyber Security Cloud,Inc. board
More Japanese stocks in English
- i Cubed Systems,Inc.4495
- Commerce One Holdings Inc.4496
- Cybertrust Japan Co.,Ltd.4498
- Speee,Inc.4499
- State Street SPDR S&P 500 ETF (JPY Unhedged)449A
- Sumitomo Pharma Co.,Ltd.4506
- Shionogi & Co.,Ltd.4507
- State Street SPDR S&P 500 ETF (JPY Hedged)450A
- WAKAMOTO PHARMACEUTICAL CO.,LTD.4512
- Nippon Shinyaku Co.,Ltd.4516
- State Street SPDR S&P 500 High Dividend ETF (JPY Unhedged)451A
- KAKEN PHARMACEUTICAL CO.,LTD.4521